The　title　compound　(C22H32.5ClCoN6O8.25,　M-r　=　607.42)　crystallizes　in　the　orthorhombic　system,　space　group　C222(1)　with　a　=　11.320(2),　b　=　20.933(4),　c　23.936(5)　Angstrom,　V　5672(2)　Angstrom(3),　D-c　=　1.423　g/cm(3),　Z　=　8,mu(MoKalpha)　=　0.754　mm(-1),　F(000)　=　2532,　R　=　0.0512　and　wR　=　0.1190.　There　are　eight　complex　molecules　[CO(C4H6N2O2)(C4H8N2O2)(C7H9N)(2)]ClO4.0.25H(2)O　Of　C-2　crystallographic　symmetry　in　a　unit　cell,　including　two　crystallographically　independent　molecules,　in　which　different　orientations　of　the　MePhNH2　groups　are　found.　Two　MePhNH2　groups　are　in　trans　position　for　molecule　A,　and　cis　for　B.　The　central　metal　atom　is　in　a　distorted　octahedral　environment.　The　hydrogen　bonds　of　O-H(oxime)...O　and　N-H(p-aminotoluene　group)...O　construct　an　one-dimensional　chain　along　the　c　axis　in　the　title　compound.