In the title complex, [Cu(2)(CN)(NCS)(C(12)H(8)N(2))(2)], which was synthesized under hydro-thermal conditions, both Cu(I) atoms have a slightly distorted tetra-hedral geometry. They are coordinated by two N atoms of one 1,10-phenanthroline ligand, one bridging thio-cyanate anion and one bridging cyanide anion. In the crystal structure, infinite helical {Cu-CN-Cu-SCN}(n) chains are formed along...

the zinc(ii) complex [zn2(dmdtc)2(μ-dmdtc)2] has been synthesized directly from thiram ligand, containing a disulfide bond {dmdtc = n,n-dimethyldithiocarbamate; thiram = n,n-tetramethylthiuram disulfide}, and characterized by elemental analysis and spectroscopic methods. surprisingly thiram, undergoes a reductive disulfide bond scission upon reaction with zn2+ in methanolic media to give the [z...

Abstract The vast majority of theoretically possible polypeptide chains do not fold, let alone confer function. Hence, protein evolution from preexisting building blocks has clear potential advantages over ab initio emergence random sequences. In support this view, sequence similarities between different proteins is generally indicative common ancestry, and we collectively refer to such homolog...

The reaction of Ru5(μ5-C)(CO)15, 1 with C2H2 at 48 °C for 60 h yielded four new pentaruthenium carbonyl cluster compounds: Ru5[μ5-η5-CC(H)C(H)C(H)C(H)](CO)13(μ4-η2-HCCH), 2; Ru5[μ4-η5-CC(H)C(H)C(H)C(H)](CO)12(μ4-η2-HCCH), 3; Ru5(CO)13[μ4-η7-C(H)C(H)CC(H)C(H)C(H)C(H)], 4 and Ru4(CO)11(μ4-η2-HCCH)Ru(CO)3(μ-η1-η5-C5H4), 5. Compounds 2 3 were formed by opening the Ru5 1, addition three equivalents ...

The well-known system of dinuclear Cu(I) complexes bridged by 2-(diphenylphosphino)pyridine (PyrPhos) derivatives Cu2X2L3 and Cu2X2LP2 (L = bridging ligand, P ancillary ligand) goes along with endless variation options for tunability. In this work, the influence substituents modifications on phosphine moiety NP-bridging ligand was investigated. previous studies, location lowest unoccupied molec...

Z. Naturforsch. 56 b, 735-746 (2001); eingegangen am 16. Februar 2001 2,4-Dicyano Glutaconic Acid Diethyl Ester Anion, Cyano Bridges, Helix The anion of 2,4-dicyano glutaconic acid diethyl ester, [NCC(COOEt)CHC(COOEt)CN]_ ( I ), as an a,u;-dinitrile with a three atom spacer is a highly variable ligand capable of binding in a monodentate 77'-fashion, in a bidentate chelate fashion, and as a p 2-...

Chromium-chromium quintuple bonds seem to be approaching the lower limit for their bond distances, and this computational density functional theory study tries to explore the geometrical and electronic factors that determine that distance and to find ways to fine-tune it via the ligand choice. While for monodentate ligands the Cr-Cr distance is predicted to shorten as the Cr-Cr-L bond angle inc...

The asymmetric unit of the title compound, [Er(2)(C(10)H(8)O(6))(3)(H(2)O)(4)]·6H(2)O, comprises one Er(3+) ion, one and a half 2,2'-(p-phenyl-enedi-oxy)diacetate (hqda) ligands, two coordinated water mol-ecules and three uncoordinated water mol-ecules. The Er(3+) ion is nine-coordinated by seven O atoms from hqda ligands and two O atoms from water mol-ecules. In the title compound, there are t...

The electronic structures of dinuclear copper complexes of the general formula [GFA(CuX2)2], where X = Br or Cl and GFA denotes a redox-active bridging Guanidino-Functionalized Aromatic ligand, were analysed and compared. The diamagnetic complexes [GFA(CuBr2)2] can all be described as dinuclear CuI complexes with bridging GFA2+ dicationic ligand units exhibiting a [CuI-GFA2+-CuI] electronic str...

The title structures, [Zn2(C3H6NS2)4(C14H14N4O2)]·2C3H7NO (I) and [Zn2(C7H14NS2)4(C14H14N4O2)] (II), each feature a bidentate, bridging bipyridyl-type ligand encompassing a di-amide group. In (I), the binuclear compound is disposed about a centre of inversion, leading to an open conformation, while in (II), the complete mol-ecule is completed by the application of a twofold axis of symmetry so ...