Synthesis and characterisation of first row transition metal complexes of functionalized 1,2,4-benzothiadiazines

Clark, Ewan R., Anwar, Muhammad U., Leontowicz, Bryce J., Beldjoudi, Yassine, Hayward, John J., Chan, Wesley T.K., Gavey, Emma L., Pilkington, Melanie, Zysman-Colman, Eli, Rawson, Jeremy M. and others. (2014) Synthesis and characterisation of first row transition metal complexes of functionalized 1,2,4-benzothiadiazines. Dalton Transactions, 43 (34). pp. 12996-13005. ISSN 1477-9226. (doi:10.1039/c4dt01413h) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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http://www.dx.doi.org/10.1039/c4dt01413h

Abstract

Reaction of the novel ligand 3-(2?-pyridyl)-benzo-1,2,4-thiadiazine (L) with the transition metal chloride salts MCl2·xH2O (MII = Mn, Fe, Co, Cu and Zn) in a 2 : 1 mole ratio afforded the mononuclear octahedral (high spin) complexes L2MCl2 (1a–1e respectively) in which L binds in a chelate fashion via N(2) and the pyridyl N atoms. In the case of CuCl2 the intermediate 1 : 1 four-coordinate complex LCuCl2 (2) was also isolated which adopts a polymeric structure with pseudo-square planar molecules linked via long CuS contacts (dCuS = 2.938(1) Å) in the apical position. In the presence of non-interacting ions, 3 : 1 complexes are isolated, exemplified by the reaction of L with Fe(CF3SO3)2 in a 3 : 1 ratio which affords the low spin complex [L3Fe][CF3SO3]2 (3). Reaction of L with VCl3 in a 2 : 1 mole ratio under aerobic conditions afforded the vanadyl complex [L2V([double bond, length as m-dash]O)Cl][Cl] (4).

Item Type: Article
DOI/Identification number: 10.1039/c4dt01413h
Uncontrolled keywords: Chlorine compounds, Copper, Iron compounds, Metal complexes, Synthesis (chemical), Aerobic condition, Apical positions, First row transition metals, Low-spin complexes, Planar molecules, Polymeric structures, Transition metal chloride, Vanadyl complexes, Copper compounds
Subjects: Q Science > QD Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 29 Jul 2015 15:06 UTC
Last Modified: 29 May 2019 14:56 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49868 (The current URI for this page, for reference purposes)
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