摘要:
                                In the crystal structure of trans-dichlorobis(trigonelline O,O')copper(II) (trigonelline is N-methylpyridinium-3-carboxylate), [CuCl2(C7H7NO2)(2)], (I), the monomeric Cu-II complex has a distorted octahedral coordination. In the crystal structure of tetrakis(mu-trigonelline-O:O')bis [chlorocopper(II)] dichloride octahydrate, [Cu2Cl2(C7H7NO2)(4)]Cl-2. 8H(2)O, (II), the dinuclear Cu-II complex has a slightly elongated cage structure, with a Cu ... Cu distance of 2.770(1) Angstrom. In the crystal structure of tetrakis[mu-(1-methylpyrrole-2-carboxylato)-O:O'] bis[(3-methylpyridine-N)copper(II)], [Cu-2(C6H6NO2)(4)(C6H7N)(2)], (III), the dinuclear Cu-II complex has a cage structure, with a Cu...Cu distance of 2.671(1)Angstrom. The magnetic -2J value for (III) is 343 cm(-1) (H = -2JS(1). S-2).