A new complex of the amino acid glycine has been synthesized by coordination with sodium nitrate. The title complex, Na(CH2NH2COOH)(2)NO3, crystallizes in the monoclinic space group, Cc , with parameters a = 14.331(2) Angstrom, b = 5.262(2) Angstrom, c = 9.119(2) Angstrom, beta = 119.08(1)degrees, V = 600.8(2) Angstrom(3) , Z = 4, F.W. = 159.06, D-c = 1.758 Mg.m(-3), F-000 = 324, lambda(MoKalpha) = 0.71069 Angstrom, mu = 0.228 mm(-1), R1 = 0.0481. The compound exhibits some novel structural features. The optical second harmonic generation conversion efficiency was determined using Kurtz powder technique. It was found to be twice that of Potassium Diortho Phosphate (KDP).