Schiff-Bases and Their Complexes With Metal-Ions .1. 2-Hydroxy-N-N-Propyl-1-Naphthaldimine (1) and Bis(2-Hydroxy-Kappa-O-N-N-Propyl-1-Naphthaldiminato-Kappa-N)Nickel(Ii) (2)
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(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) and 92.0(1)degrees. The Ni-O distances are 1.826(2) and 1.913(2) Angstrom and the Ni-N distances are 1.827(2) and 1.911(2) Angstrom A in the two complexes.