Pseudotetrahedral and pseudooctahedral complexes of the types [ML2Cl2], [M(
L-L)Cl-2], [ML4Cl2] and [M(L-L)(2)Cl-2] (where, L = C6H5CH = NC6H5 or C6H5C
H = NC6H5-4- COOC2H5; L-L = C6H5CH = N-C6H4-2-N = CHC6H5; M = Fe-II, Co-II,
Cu-II) have been synthesized. The complexes undergo octahedral to tetrahed
ral conversions in acetone and vice versa in ethanol solutions.