Copper(II) nitrite complexes of tripodal ligands derived from 1,1,1-tris(2-pyridyl)methylamine

Copper nitrite complexes of stoichiometric formulae [Cu(NO2)nL] (n=1 or 2), where L is a Schiff base or amide derivative of 1,1,1-tris(2-pyridyl)methylamine, have been prepared and characterized. The crystal structures of the mononuclear Schiff base complex [Cu(NO2)2(tpmbz)] [tpmbz=(C5H4N)3CN=CHC6H5], the nitrite-bridged dinuclear Schiff base complex [{Cu(NO2)(tpmsal)}2]·Et2O [tpmsalH=(C5H4N)3CN=CHC6H4OH-2] and the polymeric amide complex [{Cu(NO2)(tpms)}n]·nH2O [tpmsH=(C5H4N)3CNHC(O)CH2CH2CO2H] are reported. Copper nitrite complexes of new Schiff base and amide ligands derived from 1,1,1-tris(2-pyridyl)methylamine have been prepared and characterized, including three X-ray crystal structures. The complexes have general formulae [Cu(NO2)nL] (n=1 or 2) and the nitrito ligands are coordinated through one or both O atoms.