SCHIFF-BASES AND THEIR COMPLEXES WITH METAL-IONS .1. 2-HYDROXY-N-N-PROPYL-1-NAPHTHALDIMINE (1) AND O-N-N-PROPYL-1-NAPHTHALDIMINATO-KAPPA-N)NICKEL(II) (2)

(1) [systematic name: 1-(2-aza-1-penten-1-yl)-2-naphth-ol], C14H15NO, is a bidentate ligand used for the preparation of (2), [Ni(C14H14NO)(2 )]. It has an unexpectedly short C2-O [1.254(8) Angstrom] bond length, and a H ... N intramolecular close contact [2.403(7) Angstrom]. In (2 ), the asymmetric unit comprises two half-complexes. The coordination of the Ni-II ions is square planar with bond angles between 88.0(1) an d 92.0(1)degrees. The Ni-O distances are 1.826(2) and 1.913(2) Angstro m and the Ni-N distances are 1.827(2) and 1.911(2) Angstrom A in the t wo complexes.