Crystal structure of diaqua-bis(N,N-dimethylformamide-κ1O)-bis{3-((5-chloro-2-oxidobenzylidene)amino)-2-oxo-2H-chromen-4-olato-κ4N,O,O′:O′}dinickel(II), C38H34Ni2Cl2N4O12

C38H34Ni2Cl2N4O12, monoclinic, C2/c (no. 15), a = 17.867(3) angstrom, b = 9.170(6) angstrom, c = 24.651(5) angstrom, beta = 110.837(2)degrees, Z = 4, V = 3775(3) angstrom(3), R-gt(F) = 0.0323, wR(ref)(F-2) = 0.1078, T = 293(2) K.