Complexes of yttrium and lanthanide nitrates with a Schiff base, N,N1-bis(4-antipyrylmethylidene)ethylenediamine (BAME) having the general formula [Ln(BAME)2(NO3)](NO3)2, where Ln=Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho and Er have been synthesised and characterised by elemental analyses, molar conductance in non-aqueous solvents, electronic, infrared and proton NMR spectra. BAME acts as a neutral bidentate ligand coordinating through both azomethine nitrogen atoms. One of the nitrate groups is coordinated in a bidentate manner. A coordination number of six may be assigned to the metal ion in these complexes. The covalency parameters evaluated from the solid state electronic spectra suggest weak covalent character of the metal-ligand bond.