The Crystal Structure of Binuclear Metal Complexes of 7‐Azaindole: Cu 2 (CH 3 CO 2 ) 2 (C 7 H 5 N 2 ) 2 (C 7 H 6 N 2 ) 2 AND Ni 2 (C 7 H 5 N 2 ) 4 .2DMF

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, C 7 H 6 N 2 denoted by HL), Cu 2 (CH 3 CO 2 ) 2 .·L 2 (HL) 2 and Ni 2 L 4 .2DMF. The dark green crystal of Cu 2 (CH 3 CO 2 ) 2 L 2 (HL) 2 was found to crystallize in the monoclinic space group P 2 1 /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 Ni 2 L 4 .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 Å 3 , 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.