Document Type

Article

Rights

This item is available under a Creative Commons License for non-commercial use only

Disciplines

Organic Chemistry, Inorganic and nuclear chemistry

Publication Details

Polyhedron Volume 59, 1 August 2013, Pages 8–16

Abstract

The reaction of 2-(2H-tetrazol-5-yl)pyridine (L1) with 1,n-dibromoalkane (n = 3, 4, 6 or 8) results in the formation of the isomers 2-(n′′-bromoalkyl-(1-tetrazol-5-yl)pyridine (L2A-D) and 2-(n′′-bromoalkyl-(2-tetrazol-5-yl)pyridine (L3A-D). The reaction of L1 with 1-bromoalkanes also resulted in the formation of isomeric materials, namely 2-(n′′-alkyl-(1-tetrazol-5-yl)pyridine (L4A-C) and 2-(n′′-alkyl-(2-tetrazol-5-yl)pyridine (L5A-C). Complexation reactions of these ligands with the transition metal salts CuCl2.2H2O, Co(NCS)2, NiCl2.2H2O and ZnCl2 were carried out in methanol and resulted in complexes containing a 1:1 metal:ligand stoichiometry except in the cases of the cobalt complexes where a 1:2 metal:ligand stoichiometry was obtained. The 1H NMR spectra of the zinc complexes showed that the ligands containing the pendant arm in the 2-N position of the tetrazole ring bind the zinc ion more strongly than those containing the pendant arm in the 1-N position. The X-ray structures of two cobalt salts, Co(L5A)2(NCS)2 and Co(L5C)2(NCS)2, are also discussed.

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