Abstract: | The crystal and molecular structures have been determined by single-crystal X-ray methods for the binuclear metal ions (II) complexes of 7-azaindole (1H-pyrrolo [2,3-b] pyridine, C7H6N2 denoted by HL), Cu2(CH3CO2)2.·L2(HL)2 and Ni2L4.2DMF. The dark green crystal of Cu2(CH3CO2)2L2(HL)2 was found to crystallize in the monoclinic space group P 21/n with a = 9.566(2), b = 12.752(2), c = 12.852(4) Å, β = 99.23(3)0, V = 1547 Å, Z = 2, the final R = 0.062 and Rw = 0.053 for 1488 observations from 2722 unique reflections. The Cu-Cu distance is 2.747(2), Cu-N (L?, bridge) is 1.966(7), Cu-N (HL, axial) is 2.229(8), and Cu-O is 2.031(6)Å. The red crystal of Ni2L4.2DMF was was found to crystallize in the triclinic space group documentclass{article}pagestyle{empty}begin{document}$$ {rm P bar 1} $$end{document} with a = 8.907(5), b = 9.462(2), c = 10.217(2) Å, α = 90.48(2), β = 91.09(3), γ = 110.69(3)0, V =805 Å3, Z = 1, the final R = 0.063 and Rw = 0.069 for 1489 observations from 2834 unique reflections. The Ni-Ni distance is 2.594(2), Ni-N is 1.905(7) Å. These two molecules lie on crystllographic inversion centers and exhibit ligand disorder. |