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)

Abstract

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.