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N-donor ligand complexes of nickel, zinc and copper: comparisons with tetradentate N-donor ligands derived from Schiff bases

Mustapha, Abdullahi and Duckmanton, Paul and Reglinski, John and Kennedy, Alan R. (2010) N-donor ligand complexes of nickel, zinc and copper: comparisons with tetradentate N-donor ligands derived from Schiff bases. Polyhedron, 29 (13). pp. 2590-2594. ISSN 0277-5387

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Abstract

The nickel and zinc complexes of 2-aminomethylaniline (AMA) are reported. Both metals form the octahedral complex [M(AMA)(2)(ONO2)(2)] (M = Ni, Zn) where the aromatic ligands lie in the meridial plane with the anilino donors trans to one another. The remaining nitrates coordinate axially. A simple comparison with the nitrogen donor disposition (cis/trans) in nickel complexes of tetradentate N-4 donor ligands derived from symmetric Schiff base ligands is presented. The discussion is extended to interrogate the bonding motifs of the nitrate ligands viz -ONO2 in the nickel complexes of AMA compared to the two motifs (viz O2NO and ONO2) that are isolated for the nickel complexes of the macrocycle hexamethyltetraazacyclotetradecane. (C) 2010 Elsevier Ltd. All rights reserved.