Síntese, estrutura cristalina e molecular de complexos nos sistemas 1,3-bis(p-azofenil)triazenido e 3-(2-flúorofenil)-1-(4-nitrofenil)triazenido/Pd(II)

• Ano de defesa: 2002
• Autor(a) principal: Visentin, Lorenzo do Canto
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; Brasil; Química; UFSM; Programa de Pós-Graduação em Química; Centro de Ciências Naturais e Exatas
• Palavras-chave em Português: Química; Química inorgânica; Estrutura molecular; Estrutura cristalina; Triazenos; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/27037

The reaction between palladium chloride and 1,3-bis(pazophenyl)triazenido/pyridine yields the complex trans-bis[1,3-bis(pazophenyl)triazenido]-bis(pyridine)palladium(II), complex (a), which crystallizes in the triclinic crystal system, space group P ī, Z = 2, with cell parameters a = 8,8634(7), b = 15,1791(2), c = 22,5932(2) Å, α = 109,328(6)°, β = 94,053(5)°, γ = 95,511(8)°. The final crystal structure refinement converge to R1 = 0,0780 e wR2 = 0,2503. Complex (a) shows two triazenidos ligands coordinated as terminal ligands to palladium(II), and its the coordination sphere is completed by two pyridine ligands. The coordination geometry is square planar. In these reaction the palladium chloride was dissolved in ammonium hydroxide and the triazene was dissolved in THF. The reaction between palladium chloride and 3-(2-fluorophenyl)-1-(4- nitrophenyl)triazenido/pyridine yields the complex trans-Bis[3-(2- fluorophenyl)-1-(4-nitrophenyl)triazenido]bis-(pyridine)palladium(II), complex (b), which crystallizes in the triclinic crystal system, space group P ī, Z = 1, with cell parameters a = 8,941(2), b = 9,73(2), c = 10,9449(10) Å , α = 110,058(14)°, β = 93,437(13)°, γ = 109,01(19)°. The final crystal structure refinement converge to R1 = 0,045 e wR2 = 0,105. Complex (b) shows two triazenidos ligands coordinated as terminal ligands in the palladium(II) and its the coordination sphere is completed by two pyridine ligands. The coordination geometry is square planar. In these reaction the palladium chloride was dissolved in ammonium hydroxide and the triazene was dissolved in THF.