Crystal structure of diaqua-bis(<italic>N</italic>,<italic>N</italic>-dimethylformamide-κ1<italic>O</italic>)-bis{3-((5-chloro-2-oxidobenzylidene)amino)-2-oxo-2<italic>H</italic>-chromen-4-olato-κ4<italic>N</italic>,<italic>O</italic>,<italic>O′</italic>:<italic>O′</italic>}dinickel(II), C38H34Ni2Cl2N4O12

C38H34Ni2Cl2N4O12, monoclinic, <italic>C</italic>2/<italic>c</italic> (no. 15), <italic>a</italic> = 17.867(3) Å, <italic>b</italic> = 9.170(6) Å, <italic>c</italic> = 24.651(5) Å, <italic>β</italic> = 110.837(2)°, <italic>Z</italic> = 4, <italic>V</italic> = 3775(3) Å3, <italic>R</italic>gt(<italic>F</italic>) = 0.0323, <italic>wR</italic>ref(<italic>F</italic>2) = 0.1078, <italic>T</italic> = 293(2) K. [ABSTRACT FROM AUTHOR]