prelims, contents pages
Transcript of prelims, contents pages
Contents
Seyyed Javad Sabounchei,Fateme Akhlaghi Bagherjeri,Colette Boskovic, Robert W. Gable,Roya Karamian and Mostafa Asadbegy
Polyhedron 53 (2013) 1
Reactivity of mercury(II) halides with the a-ketostabilized sulfonium ylides: Crystal structures oftwo new polymer and binuclear complexes and invitro antibacterial study
Reaction of a-keto stabilized sulfoniumylides (Me)2SCHC(O)C6H4R (R = p-NO2 andp-Br) with HgX2 (X = Cl, Br and I) leads to
binuclear and polymer products of the type[HgX2(Ylide)]2 and [{HgI(Ylide)]n. The infra-red, NMR data and the X-ray crystal struc-tures of the complexes 1 and 2 demonstrateC-coordination of the ylide to the metal andpresence of the asymmetric halide-bridgedbinuclear and the zig-zag polymeric chainstructures, respectively. In addition, theantibacterial effects of the DMSO-solutionsof the complexes were investigated by discdiffusion method against three Gram posi-tive and three negative bacteria.
Irvin N. Booysen, Thulani Hlela,Thomas I.A. Gerber, Orde Q. Munro andMatthew P. Akerman
Polyhedron 53 (2013) 8
Novel vanadium compounds with 2-pyridyl-benzimidazole
The coordination behaviour of Hpybz (2-pyridylbenzimidazole) towards vanadiumin various oxidation states (i.e. +III/IV/V)has been explored. A novel binuclearmixed-valence oxovanadium compound,(l-O)[VVO(pybz)2ÆVIVO(Hpybz)(acac)], wasobtained from the reaction of Hpybz withVO(acac)2. ESR analysis illustrates para-magnetic behaviour, typical of a type Idimer.
Mehdi Araghi and Forough Bokaei
Polyhedron 53 (2013) 15
Manganese(III) porphyrin supported on multi-wall carbon nanotubes: A highly efficient andreusable biomimetic catalyst for oxidative dec-arboxylation of a-arylcarboxylic acids and oxi-dation of alkanes with sodium periodate
Highly efficient oxidative decarboxylationof carboxylic acids and also oxidation ofalkanes with sodium periodate catalyzedby tetrakis(p-aminophenyl)porphyrinato-manganese(III) chloride, [Mn(TNH2PP)Cl],supported on functionalized multi-wallcarbon nanotubes, MWCNT, is reported.This heterogenized catalyst could be re-used several times without significant lossof its catalytic activity.
R
R'COOH
H [Mn(TNH2PP)Cl@MWCNT]
NaIO4, Imidazole, CH3CN/ H2Oor or
R'
R
O
R R'R R'
O
R R'
OH
+
+
CO2
Elsevier Ltd.
Polyhedron 53, 10 April 2013
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Polyhedron
journal homepage: www.elsevier .com/locate /poly
Aleksander Kufelnicki,Magdalena Wozniczka,Urszula Kalinowska-Lis, Julia Jezierskaand Justyn Ochocki
Polyhedron 53 (2013) 20
Synthesis, acid–base and complexing propertieswith Cu(II), Co(II) and Zn(II) in aqueous solutionof a novel 1H-benzimidazol-2-ylmethyl diethylphosphate ligand: Comparison with other2-substituted benzimidazole ligands
A novel 1H-benzimidazol-2-ylmethyldiethyl phosphate (2-BimOpe) derivativeshows specific coordinating properties to-wards Cu(II), Co(II) and Zn(II) in aqueoussolution as compared with other 2-sub-stituted benzimidazoles. The differencescome evidently from a bulky effect ofthe estrificated phosphoric group and itselectron withdrawing effect.
Ireneusz Kownacki, Maciej Kubicki andPaulina Bła _zejewska-Chadyniak
Polyhedron 53 (2013) 26
Synthesis and crystal structures of binucleariridium and rhodium complexes with symme-trical and unsymmetrical bulky siloxide bridges
The article presents synthesis and structur-al studies of two isostructural rhodium andiridium complexes such as [{Rh(cod)}2
(l-OSiMe3)(l-OSi(OSiMe3)3)] (1) and [{Ir(cod)}2(l-OSiMe3)(l-OSi(OSiMe3)3)] (2) ob-tained by sequential reaction of appropri-ate TM chloride precursors ([{M(l-Cl)(cod)}2], M = Rh, Ir) with different bulkysodium siloxides as well as iridium com-plex with two identical hindered bridgingsiloxide ligands: [{Ir(cod)(l-OSi(OSiMe3)3)}2](3).
Aloke Kumar Ghosh, Antonio Bauzá,Valerio Bertolasi, Antonio Frontera andDebashis Ray
Polyhedron 53 (2013) 32
Dinuclear and heptanuclear nickel(II) com-plexes: Anion coordination induced ligand armhydrolysis and aggregation around a nickel(II)core
Water derived in situ generation of hydro-xido anions lead to self-assembly of fourphenoxido-based Schiff base ligated [Ni2]fragments around a central NiII cationproviding a novel heptanuclear nickel(II)complex.
Humberto C. Garcia, Renata Diniz andLuiz Fernando C. de Oliveira
Polyhedron 53 (2013) 40
Supramolecular architectures of metal com-plexes containing 4-sulfobenzoate dianion and1,2-bis(4-pyridyl)ethane
Four Mn(II), Co(II), Ni(II) and Zn(II) com-plexes with multidentate organic acid andnitrogen ligand have been obtained. For themanganese complex was observed a dif-ferent coordination, where only the 4-sulfobenzoate ions are bonded, whereasfor all the other compounds the 1,2-bis-(4-pyridyl)ethane is also coordinated. For allthe compounds, hydrogen bonds, C–H� � �pand p-stacking are the major forces drivingthe solid state arrangement.
vContents
Manas Sutradhar, Tannistha Roy Barman,Julia Klanke, Michael G.B. Drew andEva Rentschler
Polyhedron 53 (2013) 48
A novel Cu(II) dimer containing oxime-hydra-zone Schiff base ligands with an unusual modeof coordination: Study of magnetic, autoreduc-tion and solution properties
A new hydrazone based Schiff base ligand,3-methylpyrazole-5-carbohydrazone of2,3-butanedione monoxime (HL), and itsCu(II) (1) and Co(III) (2) complexes are
reported. The ligand shows an unusualmode of coordination. Complex 1 is a dimercontaining a crystallographic centre ofsymmetry and is found to undergo dis-sociation and autoreduction transforma-tion in solvents such as DMF and DMSO.The EPR spectrum of 1 in DMF shows thepartial dissociation of the binuclear com-plex into a mononuclear species. Magneticstudies of 1 show that the two Cu(II)centres are strongly antiferromagneticallycoupled via bridging N–O groups.
Leah C. Matsinha, Selwyn F. Mapolie andGregory S. Smith
Polyhedron 53 (2013) 56
Synthesis and characterization of mono- andbinuclear iminopyridyl and salicylaldimineRu(II)–arene complexes
A series of mono- and binuclear rutheniu-m(II)–arene iminopyridyl and salicylaldi-mine Schiff-base complexes have beensynthesized and characterised by NMRand IR spectroscopies, ESI-mass spectro-metry, and elemental analyses. The mole-cular structure of a representativemononuclear complex was determined byX-ray diffraction analysis.
Joseph D. Henthorn, Netra Mishra,Christopher D. Haun, Ana L. Castro,Hunter G. Douglas, Matthew Pegram,Brian Stadelmaier, Jay S. Huebner andChristos Lampropoulos
Polyhedron 53 (2013) 62
Using single-molecule magnets as analyte-re-cognition compounds in photo-electric chemicalsensors: Recent results from [Mn12O12(O2-CCH3)16(H2O)4]Æ2CH3COOHÆ4H2O, and [Mn12-O12(O2CPh)16(H2O)4]
The single-molecule magnets [Mn12O12-(O2CCH3)16(H2O)4]Æ2CH3COOHÆ4H2O, and[Mn12O12(O2CPh)16(H2O)4] were investi-gated as analyte-recognition compounds(ARCs) on photo-electric chemical sensors(PECS). The data for these sensors wereparticularly encouraging both for the vaporand the liquid analytes considered, andcontinued investigations may lead to sen-sors using molecular clusters as ARCs withhigh sensitivity and analyte specificity.
Dorel Oltean, Alpar Pöllnitz andAnca Silvestru
Polyhedron 53 (2013) 67
Organophosphorus ligands with XPNSO skele-ton (X = O, S) and their Pd(II) complexes.Crystal and molecular structure of [{XP(OE-t)2}(O2SR)]NH (X = O, R = Me, Ph; X = S, R =C6H4Cl-4) and Pd[{SP(OEt)2}(O2SC6H4Cl-4)N]2
Several organophosphorus acids of type[{XP(OEt)2}(O2SR)]NH [X = O, R = Me, Ph,C6H4CH3-4; X = S, R = C6H4Cl-4], as well astheir potassium salts K[{XP(OEt)2}(O2SR)N]and the palladium(II) complexesPd[{XP(OEt)2}(O2SR)N]2 were preparedand structurally characterized. Single-crys-tal X-ray diffraction studies revealed eithermonomeric or polymeric structures withdifferent degrees of association in case ofthe free acids. A trans-S,N-coordinationpattern of the organophosphorus ligandwas found in the palladium complexPd[{SP(OEt)2}(O2SC6H4Cl-4)N]2.
vi Contents
Zeinab Moradi-Shoeili, Zahra Amini,Davar M. Boghaei and Behrouz Notash
Polyhedron 53 (2013) 76
Synthesis, X-ray structure and ascorbic oxida-tion properties of ternary a-amino acid Schiffbase-bipy Cu(II) complexes as functional mod-els for ascorbic oxidase
Three new ternary copper(II) complexeshave been prepared and characterized.Synthesized compounds are found to becatalytically active in oxidation of ascorbicacid in presence of dioxygen which modelsthe ascorbate oxidation property of theCu(II) sites in ascorbate oxidase.
B. Machura and I. Gryca
Polyhedron 53 (2013) 83
Synthesis, spectroscopic characterization, X-raystructure and DFT calculations of p-tolylimidorhenium(V) complexes of 2,2¢-dipyridylamine
The paper concerns two novel imido rhenium(V) complexes [Re(p-NC6H4CH3)Cl(OMe)(Hdpa)(PPh3)]ReO4 (1) and [Re(p-NC6H4CH3)Br(OMe)(Hdpa)-(PPh3)]ReO4 (2). The compounds havebeen synthesized and characterised spectrosco-pically and structurally (by single-crystal X-raydiffraction). The experimental studies on 1 havebeen accompanied computationally by the den-sity functional theory (DFT) and time-dependentDFT calculations. Additional information aboutthe Re–NR bond characteristics in [Re(p-NC6-H4CH3)Cl(OMe)(dpa)(PPh3)]+ was obtained byNBO analysis.
Saeed Dehghanpour, Ali Mahmoudi,Lila Najafi, Mohammad Khalafbeigi andKhadijeh Jahani
Polyhedron 53 (2013) 91
[MII(3-(2¢-pyridylmethyleneamino)pyridine)(NO3)2], (M = Co, Zn, Cd) coordination poly-mers; single, mixed and composite crystals
3-(2¢-Pyridylmethyleneamino)pyridine andits homo and heterometallic coordinationpolymers have been synthesized and char-acterized. A series of composite crystalsbased on epitaxial growth were prepared.Thermal and fluorescence properties ofligand and complexes have been studiedand compared.
Ting Zhang, Yun-Qian Zhang,Qian Jiang Zhu and Zhu Tao
Polyhedron 53 (2013) 98
Supramolecular assemblies based on the inter-action of a copper dication with alky-substi-tuted cucurbit[6]urils
In the present study, we describe theinteraction of copper cations with alkyl-substituted cucurbiturils (SQ[6])s in theabsence and presence of a third species.The corresponding supramolecular assem-blies are dependent upon the addition ofthe third species.
viiContents
Young Jae Lee and Soon W. Lee
Polyhedron 53 (2013) 103
Ligands containing pyridyl-carboxylate term-inals and their discrete silver and polymericcadmium compounds: (n-py)–CH@N–C10H6–COOH (n = 2 (HL1), 3 (HL2)), [Ag(HL1)2](PF6),[Ag(HL1)2](NO3)(H2O), and [Cd(L2)2]¥
Two potential linking ligands containingpyridyl-carboxylate terminals {(n-py)–CH@N–C10H6–COOH (n = 2 (HL1), 3 (HL2)}were synthesized. By employing the li-gands, two discrete Ag(I) complexes,[Ag(HL1)2](PF6) and [Ag(HL1)2](NO3)(H2O),and a 3D cadmium coordination polymer,[Cd(L2)2]¥, were prepared. Ligand HL1 ex-hibited a red-shift on complex formation.
HL1
COOHN
AgPF6
MeOH, 12 h
N
HOOCN NAg
AgNO3
MeOH, 16 hN NAg
N NHOOC
HOOC
(PF6)
(NO3)
Hai-Wei Kuai, Xiao-Chun Cheng andXiao-Hong Zhu
Polyhedron 53 (2013) 113
Four cadmium(II) coordination polymers withan N- and O-donor ligand: Structural character-ization, in situ reaction and fluorescent prop-erty
Hydrothermal reactions of 5-(1H-benzo-triazol-1-ylmethyl)isophthalic acid (H2L)with Cd(II) salt under different experimen-tal conditions provide four complexes withdifferent structures varying from 1D to 3D.The L2) ligands in the complexes are foundto show a variety of coordination modes.The results of this study illustrate thestructural diversity of complexes underdifferent experimental conditions.
Ekaterina F. Zhilina, Dmitrii L. Chizhov,Aleksey A. Sidorov,Grigory G. Aleksandrov, Mikhail Kiskin,Pavel A. Slepukhin, Matvey Fedin,Denis V. Starichenko,Alexandr V. Korolev, Yuri N. Shvachko,Igor L. Eremenko andValeriy N. Charushin
Polyhedron 53 (2013) 122
Neutral tetranuclear Cu(II) complex of 2,6-di(5-trifluoromethylpyrazol-3-yl)pyridine: Synth-esis, characterization and its transformationwith selected aza-ligands
The first grid-like tetranuclear Cu(II) com-plex with fluoro containing 2,6-di(3-pyr-azolyl)pyridine ligand was synthesized.Transformations of the complex with se-lected aza-ligands were realized.
B. Machura, J. Palion, J. Mrozinski,B. Kalinska, M. Amini, M.M. Najafpourand R. Kruszynski
Polyhedron 53 (2013) 132
Manganese(II) complexes of 2,3,5,6-tetra-(2-pyridyl)pyrazine – Syntheses, crystal structures,spectroscopic, magnetic and catalytic properties
Several novel manganese(II) complexes of2,3,5,6-tetra(2-pyridyl)pyrazine have beensynthesised and characterised by means ofelemental analysis, IR, EPR, magnetic mea-surements and single crystal X-ray analy-
sis. Two of them, [Mn(NO3)2(tppz)(H2O)]and [Mn(N3)(NO3)(tppz)(H2O)], have beentested as catalysts in oxidation of alcohol toaldehydes/ketones using oxone (2KHSO5ÆKHSO4ÆK2SO4) as an oxidant under biphasicreaction conditions (CH2Cl2/H2O) and tet-ra-n-butylammonium bromide as phasetransfer agent under air at room tempera-ture and as catalysts in oxidation of sulfidesto sulfoxides with UHP (urea hydrogenperoxide) as oxidant.
viii Contents
Pei-Hua Zhao, Ya-Qing Liu andGui-Zhe Zhao
Polyhedron 53 (2013) 144
Synthesis, characterization and crystal struc-tures of carboxy-functionalized diiron propane-dithiolate complexes
Reactions of the known complex A withClCH2CH2OH or p-IC6H4OH in the presenceof DMAP and DCC gave the carboxy-functionalized all-carbonyl complex 1 or2, respectively. Further treatment of 1 withPPh3 in the presence of Me3NOÆ2H2Oafforded the PPh3-monosubstitued com-plex 3, together with the PPh3-disubstituedcomplex 4. The new complexes 1–4 werecharacterized by combustion analysis, IRand NMR spectroscopies, as well as bysingle crystal X-ray diffraction analysis.
Gerald I. Spijksma,Gulaim A. Seisenbaeva,Henny J.M. Bouwmeester,Dave H.A. Blank and Vadim G. Kessler
Polyhedron 53 (2013) 150
Zirconium and hafnium tert-butoxides and tert-butoxo-b-diketonate complexes – Isolation,structural characterization and application inthe one-step synthesis of 3D metal oxidenanostructures
The paper reports structure and reactivityfor tert-butoxide complexes of Zr(IV) andHf(IV) in the solid state and solution.Thermal decomposition of Zr3O(OtBu)10
produces spontaneously the hedgehog typenanostructures.
Luca Rigamonti, Stefano Carlino,Yassin Halibi, Francesco Demartin,Carlo Castellano, Alessandro Ponti,Roberta Pievo and Alessandro Pasini
Polyhedron 53 (2013) 157
Copper 1D coordination polymers and dimers:Role of the carboxylate and the ammoniumcation, crystal structures and magnetic studies
Reaction of copper carboxylates with car-boxylic acids and amines gave two new 1Dcoordination polymers [Cu2(syn,syn-g1:g1:l-RCOO)4(anti,anti-g1:g1:l-RCOO)(Et3NH)]n
with R = Me (1) and H (2), and two newdimers [Cu2(syn,syn-g1:g1:l-RCOO)4(anti-g1-RCOO)2(ammonium)2] with R = Ph,ammonium = Et3NH+ (3) and R = Me, am-monium = Et2NH2
+ (4); compound 1 showsa strong antiferromagnetic coupling withinthe dimer (2J1 = )310.8(1) cm)1) and aweak antiferromagnetic coupling betweennearest dimers (2J2 = )25(1) cm)1).
Min Young Hyun, In Hong Hwang,Myoung Mi Lee, Hyun Kim,Kyung Beom Kim, Cheal Kim,Ha-Yeong Kim, Youngmee Kim andSung-Jin Kim
Polyhedron 53 (2013) 166
ZnII coordination polymers constructed withmalonate and bipyridyl ligands: Photolumines-cence and heterogeneous catalytic reactivity
Four three-dimensional ZnII frameworkswith the general formula [{Zn(H2O)(l-mal-onate)}2(l-bipyridyl)], containing water oracetonitrile solvates, have been prepared,and their luminescence properties andheterogeneous catalytic reactivities arediscussed.
ixContents
Grzegorz Romanowski and Jaromir Kira
Polyhedron 53 (2013) 172
Oxidovanadium(V) complexes with chiraltridentate Schiff bases derived from R())-phe-nylglycinol: Synthesis, spectroscopic character-ization and catalytic activity in the oxidation ofsulfides and styrene
A series of vanadium(V) complexes withchiral tridentate Schiff base ligands, ob-tained by the single condensation of R())-phenylglycinol with carbonyl compounds,were prepared and characterized. Thevanadium(V) complexes have the abilityto catalyze the oxidation of sulfides [PhSR(R = Me, Bz)] in good yields and enantio-meric excesses. These complexes are alsocatalytically active in the oxidation ofstyrene to styrene oxide, benzaldehyde,benzoic acid, phenylacetaldehyde and1-phenylethane-1,2-diol.
O
N O
R3
R2
R4
R1
O-V=O(L)O
V
Hassan Hadadzadeh, Mona Salimi,Matthias Weil,Mohammad Taghi Behnamfar andFarivash Darabi
Polyhedron 53 (2013) 179
Complex conversion of the redox pair CoIII–NO2
to CoII–NO3: Synthesis, crystal structure andDNA-binding of trans,trans,trans-[Co(py)2
(H2O)2(NO3)2]
The mononuclear Co(II) complex trans,-trans,trans-[Co(py)2(H2O)2(NO3)2] has beenprepared under atmospheric conditions viaa redox reaction of the starting materialNa3[Co(NO2)6]. The interaction of the com-plex with FS-DNA has been investigated byelectronic absorption, competitive fluores-cence titration, circular dichroism andvoltammetric techniques.
Marvadeen A. Singh-Wilmot,Rochette A. Sinclair, Michael Andrews,Claire Rowland, Christopher L. Cahill andMuralee Murugesu
Polyhedron 53 (2013) 187
Nonanuclear lanthanide(III) nanoclusters:Structure, luminescence and magnetic proper-ties
A series of nonanuclear lanthanide(III)nanoclusters was successfully synthesizedfrom (2-hydroxy-5-methylphenyl)propan-1-one, and characterized by photolumines-cence, magnetic susceptibility and X-raycrystallography.
CH3
OH
C H3
O
+ Ln(ClO4)3. 6H2O+ Et3N MeOH
Papia Datta, Dibakar Sardar, Rajat Saha,Tapan Kumar Mondal andChittaranjan Sinha
Polyhedron 53 (2013) 193
Structure, photophysics, electrochemistry andDFT calculations of [RuH(CO)(PPh3)2(coumari-nyl-azo-imidazole)]
[RuH(CO)(PPh3)2(coumarinyl-N@N-imida-zole)]0/+ complexes have been spectrosco-pically characterized and confirmed byX-ray structure determination. The cyclicvoltammetry shows Ru(III)/Ru(II) andRu(IV)/Ru(III) redox couples along withazoimine reduction. They are emissive atroom temperature. Theoretical calculationsexplain the electronic structure, spectraland redox properties of the complexes.
x Contents
Jessica R. Lamb, Valeria A. Stepanova andIrina P. Smoliakova
Polyhedron 53 (2013) 202
Transcyclopalladation on silica gel
The use of silica gel as a ‘‘green’’ mediuminstead of solvents in transcyclopalladationof BnSMe, BnSPh, BnPPh2, 8-methylquino-line and 1,3-bis(methylthiomethyl)ben-zene with acetato- and chloro-bridgeddimeric cyclopalladated complexes derivedfrom N,N-dimethylbenzylamine providedthe corresponding C,S-, C,N-, C,P- andC,S,C-palladacycles in 39–65% yield.
En-Cui Yang, Xi-Ying Zhang,Xiu-Guang Wang, Zhong-Yi Liu andXiao-Jun Zhao
Polyhedron 53 (2013) 208
Four manganese(II) 3-amino-1,2,4-triazolecomplexes incorporated with different polycar-boxylate coligands: Synthesis, structures andmagnetism
Four 3-amino-1,2,4-triazole (atz)-basedmagnetic complexes, two 4-connectedCdSO4-type frameworks, a discrete trinuc-lear entity, and a layered motif, wereobtained, exhibiting weak antiferromag-netic interactions transmitted by l-syn,anti-COO) and/or l-N2,N4-atz mediatorsin the nearest neighbours of the local bi-and trinuclear magnetic subunits.
Paulina Tsiliki, Franc Perdih, Iztok Tureland George Psomas
Polyhedron 53 (2013) 215
Structure, DNA- and albumin-binding of themanganese(II) complex with the non-steroidalantiinflammatory drug niflumic acid
The mononuclear manganese(II) complexof the non-steroidal antiinflammatory drugniflumic acid [Mn(O-niflumato)2(metha-nol)4] exhibits enhanced binding behaviourtowards DNA and serum albumins than thefree drug.
Mojtaba Bagherzadeh, Maryam Zare,Vahid Amani, Arkady Ellern andL. Keith Woo
Polyhedron 53 (2013) 223
Dioxo and oxo-peroxo molybdenum(VI) com-plexes bearing salicylidene 2-picoloyl hydra-zone: Structures and catalytic performances
MoO2(sal-phz)(CH3OH) and MoO(O2)(sal-phz)(CH3OH) have been synthesized andstudied as catalysts for the epoxidation ofolefins. The MoO2(sal-phz)(CH3OH) com-plex exhibits high catalytic activity for theepoxidation of olefins, whereas the peroxoanalogue is inert to the reaction. The lack ofreactivity of the peroxo complex rules outthe peroxo species as the intermediateresponsible for oxygen transfer in thereaction pathway.
xiContents
Ramalingam Thirumoorthi andTristram Chivers
Polyhedron 53 (2013) 230
Structure of the telluroketone TeC(PPh2N-SiMe3)2 coordinated to an Li8O6 cluster
The title compound is obtained as acentrosymmetric dimer comprised of twomolecules of the telluroketone TeC(PPh2N-SiMe3)2 which are N,Te,N-coordinated totwo LiOLi units of the neutral dimeric Li8O6
cluster [Li8(l5-O)2(l5-OH)4(C4H8O)4].
Saugata Konar, Atanu Jana, Kinsuk Das,Anamika Dhara, Sudipta Chatterjee,Luca M. Carrella, Eva Rentschler andSusanta Kumar Kar
Polyhedron 53 (2013) 235
An intramolecular antiferromagneticallycoupled pentanuclear homoleptic Mn(II) clus-ter: Synthesis, crystal structure, spectral andmagnetic property
Synthesis, crystal structure, spectral andmagnetic behavior of a homoleptic penta-nuclear Mn5 (II) cluster derived from aditopic ligand (5(E)-5-methyl-N¢-(pyridin-2-ylmethylene)-1H-pyrazole-3-carbohydra-zide), PzOPyH.
Kristen M. Roberts, Morgan A. Flahiveand James E. House
Polyhedron 53 (2013) 240
Thermodynamics of dissolution of ferrocene inn-octane, methanol, and acetonitrile
The solubility of ferrocene in n-octane,methanol, and acetonitrile has been stu-died to determine the thermodynamicquantities for dissolution. As expected fora nonpolar organometallic compound, so-lubility is greatest in n-octane. Entropychanges are discussed in terms of order inthe solvents and solvation of ferrocenemolecules.
Fe
-3.4
-3.2
-3.0
-2.8
-2.6
-2.4
-2.2
-2.0
-1.8
-1.6
-1.40.0032 0.0033 0.0034 0.0035 0.0036 0.0037
1/T, K-1
ln (s
olub
ility,
M)
n-OctaneAcetonitrileMethanol
Yong-Bin Lai, Chen-Shiang Lee,Wan-Jung Lin, Abbas Raja Naziruddinand Wen-Shu Hwang
Polyhedron 53 (2013) 243
Bis-chelate N-heterocyclic tetracarbene Ru(II)complexes: Synthesis, structure, and catalyticactivity toward transfer hydrogenation of ke-tones
Ru(II) complexes with two chelating di-N-heterocyclic carbenes (NHC) and two acet-onitrile ligands were synthesized andstructurally characterized. The complexesprove to be an efficient catalyst for transferhydrogenation of ketones.
0 10 20 30 40 50 600
20
40
60
80
100
conv
ersi
on (%
)
time (min)
1.0 mol% 0.10 mol% 0.010 mol%
xii Contents
Dasarath Mal, Rupam Sen, Paula Brandãoand Zhi Lin
Polyhedron 53 (2013) 249
Crystallization of five new supramolecular net-works with both bipyridyl and dicyanamideligands
Five new supramolecular networks havebeen crystallized with various structuresdepending highly on the experimentalconditions. The networks are ensured byintermolecular hydrogen bonding, andcontain both bpy and dca ligands. Onecompound contains water clusters, whilethe dca ligand is disordered in two com-pounds.
Susobhan Biswas, Rajat Saha,Ian M. Steele, Kamalendu Dey andSanjay Kumar
Polyhedron 53 (2013) 258
2D Ferromagnetic sheet of antiferromagnetictrimeric metal cores
Syn–syn and l-oxo bridging of acetateforms an antiferromagnetic trimeric metalcore and syn–anti and anti–anti bridging ofacetates among the trimeric units induce aferromagnetic interaction while the com-plex shows an overall ferromagnetic inter-action.
Bhaskar Biswas, Merry Mitra,Jaydeep Adhikary, G. Rama Krishna,Partha Pratim Bag, C. Malla Reddy,Nuria Aliaga-Alcalde,Tanmay Chattopadhyay, Debasis Das andRajarshi Ghosh
Polyhedron 53 (2013) 264
Synthesis, X-ray structural and magnetic char-acterizations, and epoxidation activity of a newbis(l-acetato)(l-alkoxo)dinuclear iron(III) com-plex
The synthesis, crystal structure and variabletemperature magnetic measurements of a new
dinuclear Fe(III) complex, [Fe2(l1,3-O2Cfn)(OH2)(MeOH)Cl2L] (1) [fn = furan, L = N,N¢-bis(salicyal-dehydene)-1,3-diaminopropan-2-ol], is reported.From X-ray diffractometry, it was shown thateach Fe(III) centre in 1 is in a distorted octahedralenvironment. A variable temperature magneticstudy reveals strong antiferromagnetic behaviourof 1 with J = )22.2 ± 0.1 cm)1. Use of 1 as analkene epoxidation catalyst towards (E)-stilbeneand styrene with tert-butyl hydrogen peroxide(TBHP) and iodosylbenzene (PhIO) reveals thatTBHP is the better oxidant in terms of the yield ofthe reaction.
Fe
OOC
O
Fe
NO
OO
NHC CH
OH2
Cl
Cl
OCH3H
HFe complex
Oxidant, Solvent
O
H Ph
PhH
Ph
Ph
H
Somnath Roy, Ray J. Butcher,Mohamed Salah El Fallah, Javier Terceroand João Costa Pessoa
Polyhedron 53 (2013) 269
An unusual half-open cubane-like tetranuclearcopper(II) complex supported by both l-alkoxoand l3-hydroxo bridges: Structure, magneticproperties, EPR and DFT studies
The polydentate compound H-PHMPreacts with Cu2+ to yield a tetranuclearCu-complex with a [Cu4(l-O)2(l3-OH)2]half-open cubane core. A variable tempera-ture magnetic study indicates the existenceof antiferromagnetic interactions (J1 =)304.0 cm)1 and J2 = )127.3 cm)1), thisbeing corroborated by DFT calculations.
xiiiContents
Adedayo Fashina, Edith Antunes andTebello Nyokong
Polyhedron 53 (2013) 278
Characterization and photophysical behavior ofphthalocyanines when grafted onto silica nano-particles
Silica nanoparticles are functionalized withzinc phthalocyanine complexes containinga free carboxyl group which facilitates thecovalent attachment of the phthalocya-nines on the silica surface via amide bondformation. The phthalocyanine functiona-lized silica nanoparticles showed higherfluorescence and triplet quantum yields aswell as longer triplet lifetimes compared tothe free phthalocyanine.
N
N
N
N
N
N NN
Zn
R
R
R
R
R=
COOH
DMF 24h
+O
O
Si
OEt
H2N
O
O
O
Si
OEt
HN
O
N
N
N
N
N
N NN
Zn
COOH
O
HOOCCOOH
O
O
O
Parvej Alam, Inamur Rahaman Laskar,Clàudia Climent, David Casanova,Pere Alemany, Maheswararao Karanam,Angshuman Roy Choudhury andJ. Raymond Butcher
Polyhedron 53 (2013) 286
Microwave-assisted facile and expeditivesyntheses of phosphorescent cyclometallatediridium(III) complexes
The microwave mediated syntheses of aseries of cyclometallated heteroleptic com-plexes of iridium(III) have been carried outand the time taken via this technique hasbeen shown to be much shorter as com-pared to conventional routes. Thesesynthesized complexes mostly emit lightthroughout the visible range. Complexeshaving phosphorous coordinating ancillaryligands showed blue-shifted emissions ascompared to (O^O), (O^N) and (N^N)coordinating ligands.
Michael K. Ainooson, Ilia A. Guzei,Lara C. Spencer and James Darkwa
Polyhedron 53 (2013) 295
Pyrazolylimine iron and cobalt, and pyrazo-lylamine nickel complexes: Synthesis andevaluation of nickel complexes as ethyleneoligomerization catalysts
A series of pyrazolylimine iron and cobalt,and pyrazolylamine nickel complexes havebeen synthesized and characterized. Thenickel complexes are excellent catalysts forethylene conversion to butenes and hex-enes.
Butenes + Hexenes(i) EtAlCl2(ii) Toluene
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