STRUCTURE OF A NICKEL(II) COMPLEX OF THE DEPROTONATED ANION OF 9-TETRAMETHYL-4,8-DIAZA-3,8-UNDECADIENE-2,10-DIONE DIOXIME

,2-Dimethyl-1,3-propanediyldinitrilo)di(2-butanone oximato)(1-)-N,N',N '',N'''] nickel perchlorate, [Ni(C13H23N4O2)](ClO4), M(r) = 425.5, mon oclinic, P2(1)/c, a = 7.161 (3), b = 18.945 (3), c = 13.949 (4) angstr om, beta = 103.47 (1)degrees, V = 1840.2 (9) angstrom3, Z = 4, D(x) = 1.536 Mg m-3, lambda(Mo Kalpha) = 0.7093 angstrom, mu = 1.24 mm-1, F(0 00) = 887.81, T = 298 (4) K, R = 0.039, wR = 0.040, for 2729 significa nt reflections. The coordination about Ni(II) is slightly distorted sq uare planar. The Ni(II) ion is a little (0.056 angstrom) out of the sq uare coordination plane, towards the perchlorate ion. There are intram olecular and intermolecular hydrogen bonds between O atoms.