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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Structural and spectroscopic characterisation of bis-ligand complexes of iron(II), nickel(II) and nickel(III) with the hydrotris(methimazolyl)borate anion: soft S-6 donor sets generating a weak ligand field

Garner, M. and Lewinski, K. and Pattek-Janczyk, A. and Reglinski, J. and Sieklucka, B. and Spicer, M.D. and Szaleniec, M. (2003) Structural and spectroscopic characterisation of bis-ligand complexes of iron(II), nickel(II) and nickel(III) with the hydrotris(methimazolyl)borate anion: soft S-6 donor sets generating a weak ligand field. Dalton Transactions, 2003 (6). pp. 1181-1185. ISSN 1477-9234

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Abstract

Reaction of iron(II) and nickel(II) halides with sodium hydrotris(methimazolyl) borate (NaTm) results in the formation of 2 : 1 complexes [M(Tm)(2)]. Crystallographic characterisation reveals in both cases trigonally distorted octahedral geometry in an S-6 donor set. Spectroscopic properties indicate that the Tm ligand generates a weak ligand field, with Dq between that of H2O and Cl- and this is confirmed by the high-spin configuration of the iron(II) complex. Both complexes display classical paramagnetic behaviour. Mossbauer spectroscopy of the iron complex is also consistent with a high-spin complex. Reaction of NiCl2.6H(2)O with [Tl(Tm)] results in a small quantity of a material which is crystallographically demonstrated to be [Ni(Tm)(2)]Br.