The nickel, copper and zinc complexes of potentially heptadentate nitrogen–sulfur donor ligands

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Steel, G. and Mustapha, A. and Reglinski, J. and Kennedy, A.R. (2014) The nickel, copper and zinc complexes of potentially heptadentate nitrogen–sulfur donor ligands. Polyhedron, 67. pp. 360-367. ISSN 0277-5387 (https://doi.org/10.1016/j.poly.2013.09.018)

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Abstract

The multidentate compound, tris-(o-butylthiobenzyl)- aminoethylamine (L), which contains four nitrogen and three sulfur donors has been synthesised by combining 2-amino-methyl-1,3-diamino-propane (tren) with o-butylthiobenzaldehyde. L has been reacted with the nitrate salts of nickel, copper and zinc to give a series of L M(NO) complexes which were crystallographically characterised. In all cases the metal binds to the N motif proffered by the tren moiety. The nickel complex achieves a hexacoordinate geometry by ligating with a didentate (-O,O′) nitrate. Copper and zinc both produced five coordinate species by ligating with a unidentate nitrate. None of the species reported include the thio-ethers in the coordination sphere of the metal. Replacing nitrate with nitrite in the copper system allows the synthesis of a five coordinate unidentate, oxygen bound, nitrite complex. A number of unsuccessful attempts have been made, using Cd, Pb and Au, to assemble the three thioethers groups into a secondary coordination motif for metals. These reactions produce a series of LM-halide complexes which have again been crystallographically characterised.

ORCID iDs

Steel, G. ORCID logoORCID: https://orcid.org/0000-0002-5149-283X, Mustapha, A., Reglinski, J. ORCID logoORCID: https://orcid.org/0000-0002-0263-4168 and Kennedy, A.R. ORCID logoORCID: https://orcid.org/0000-0003-3652-6015;
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