Bis[2-(2-ethoxyethyl)-N,N,N',N'-tetraethyl-malondiamide-O1,O3]tris(nitrato -O,O')-lanthanum(III)

2-(2-Ethoxyethyl)-N,N,N'N'-tetraethylmalondiamide (TEEEMA, C15H30N2O3) reacts with lanthanum(III) nitrate to give the title complex, [La(NO3)3(TEEEMA)2], in which the two carboxyl functions of each TEEEMA ligand are bonded to the metal ion together with three bidentate nitrate ions. This structure establishes that the ether O atom of the central chain of TEEEMA is not bonded to the metal ion, at least in the solid state. The coordination environment geometry is different from that of the lanthanum complex of N,N,N',N'-tetraethylmalondiamide (TEMA). (orig.)