SYNTHESIS AND CRYSTALCHEMISTRY OF 1-(4-CARBOXYPHENYL)-3-(4-ACETYLAMIDOPHENYL)TRIAZENE AND COMPLEXES OF COPPER(I), SILVER(I) AND GOLD(I) WITH 1-(4-ETHOXYCARBONYLPHENYL)-3-(4-NITROPHENYL)TRIAZENIDE LIGAND / SÍNTESE E CRISTALOQUÍMICA DO 1-(4-CARBOXIFENIL)-3-(4-ACETILAMIDOFENIL)TRIAZENO E COMPLEXOS DE COBRE(I), PRATA(I) E OURO(I) COM O LIGANTE 1-(4-NITROFENIL)-3-(4-ETOXICARBOXIFENIL)TRIAZENIDO

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This work deals with the determination of the single crystal structure analysis of four triazenido complexes including gold(I), copper(I), silver(I), and the crystal structure of a free triazene molecule. Crystal data and refinement indices of 1-(4-carboxyphenyl)-3-(4- acetylamidophenyl)triazene (1) are: monoclinic system, space group P21/n, cell parameters a = 7.772(1), b = 9.7365(2), c = 19.55(3) Å, β = 93.435(1), Z = 4, R1 = 0.0394, wR2 = 0.0632. The crystal structure show that the molecule deviates significantly from planarity (r.m.s. 0.342 Å). The molecules of (1) are associated to a bi-dimensional supramolecular array in form of helix chains including classic hydrogen bonding in the [010] crystallographic direction. Crystal data and refinement indices of 1-(4-ethoxycarbonylphenyl)-3-(4-nitrophenyl)triazenide(triphenylphosfine)gold(I) (3) are: triclinic system, space group P(-1), cell parameters a = 9.8837(2), b = 12.6159(2), c = 13.0948(2) Å, α = 79,160(1), β = 78,411(1), γ = 73,731(1), Z = 2, R1 = 0.0271, wR2 = 0.0588. One deprotonated triazenido ligand and one triphenylphosfine molecule built the linear coordination geometry of gold(I). Crystal data and refinement indices of 1-(4-ethoxycarbonylphenyl)-3-(4-nitrophenyl)-bis-(triphenylphosfine)copper(I) (4) are: triclinic system, space group P(-1), cell parameters a = 10.9853(2), b = 14.6006(3), c = 16.0638(3) Å, α = 79.160(1), β = 78.411(1), γ = 73.731(1), Z = 2, R1 = 0.0370, wR2 = 0.0996. One deprotonated triazenido ligand and three neutral triphenylfosfine molecules complete the distorted tetrahedral coordination sphere of copper(I). Crystal data and refinement indices of trans-bis-1-(4-ethoxycarbonylphenyl)-3-(4-nitrophenyl)triazenide-bis-(pyridine)silver(I) (5) are: triclinic system, space group P(-1) with cell parameters a = 9.3123(4), b = 11.1234(5), c = 11.1914(5) Å, α = 71.165(3), β = 68.723(3), γ= 89.530(3), Z = 2, R1 = 0.0383 wR2 = 0.0856. Two deprotonated monodentate triazenido ligands and two pyridine molecules in trans position relative to each other in a eight-membered Ag2N6 fragment, perform the Tcoordination geometry of each silver(I) ion. Crystal data and refinement indices of Catena-[bis(μ2-ciano)-bis(triphenilphosfine)-di-silver(I)] (6) are: monoclinic system, space group P21/n with cell parameters a = 9.3174(4), b = 22.931(1), c = 16.1513(8) Å, β = 99.759(3), Z = 4, R1 = 0.0526, wR2 = 0.1337. Two neutral triphenilfosfine molecules and two cyanide ligands support the distorted tetrahedral coordination geometry of the silver(I) ion in a open catenated coordination polymer.

ASSUNTO(S)

triazenide ligand complexo triazenido quimica triazeno triazene complexo de ouro(i) x-ray single crystal structure analysis and gold(i) complexo de prata(i) estrutura cristalina e molecular silver(i) complexo de cobre(i) triazenide complex of copper(i)

ACESSO AO ARTIGO

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