A new heterospin complex from oxamide-bridged Cu(II) binuclear units and carboxy-phenyl-substituted nitronyl nitroxide

A new heterospin complex 1, [Cu2(oxpn)(NITPBA)2], derived from trans-oxamido-bridged copper(II) binuclear units [Cu2(oxpn), oxpn = N,N′-bis(2-aminopropyl)oxamide] and carboxyl-substituted nitronyl nitroxide, (NITPBAH = 2-(4-carboxy-phenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl-3-oxide), has been synthesized and characterized structurally and magnetically.