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Structures and spectroscopic properties of chain polymeric complexes of copper(II) halides with 2,3,5,6-tetrafluoro-1,4-bis(2-pyridylsulfenyl)benzene and its 4-pyridylsulfenyl analogue

Citation

Goodgame, ML and Grachvogel, DA and Hitchman, MA and Long, NJ and Stratemeier, H and White, AJP and Wicks, JLM and Williams, DJ, Structures and spectroscopic properties of chain polymeric complexes of copper(II) halides with 2,3,5,6-tetrafluoro-1,4-bis(2-pyridylsulfenyl)benzene and its 4-pyridylsulfenyl analogue, Inorganic Chemistry, 37, (24) pp. 6354-6360. ISSN 0020-1669 (1998) [Refereed Article]

DOI: doi:10.1021/ic980479k

Abstract

The syntheses are reported of the "extended reach" ligand 2,3,5,6-tetrafluoro-1,4-bis(2-pyridylsulfenyl)benzene (L1), its 4-pyridylsulfenyl analogue (L2), and their copper(II) complexes CuLX2 (X = Cl or Br). X-ray studio have been carried out on L1, L2, and the complexes Cu(L1)Cl2·2CHCl3 (1) and [Cu(L2)(DMF)Br2]·DMF (2). Complex 1 has a chain polymeric structure with a trans-planar CuCl2N2 coordination geometry. Complex 2 is also a chain polymer structure, but in this case a DMF molecule is bonded in the apical position above a trans-CuBr2N2 unit, producing a slightly distorted square pyramidal geometry at the copper centers. The transition energies obtained from the single-crystal electronic spectrum of Cu(L1)Cl2·2CHCl3 and the g-values from its EPR spectrum are used to derive bonding parameters, and these are compared with those of other planar CuL2Cl2 complexes with amine ligands. The electronic reflectance spectrum of [Cu(L2)(DMF)Br2]·DMF implies broadly similar amine bonding parameters. This compound exhibits an unusual g-tensor with g∥ < g⊥, which is interpreted in terms of exchange-averaging of the molecular g-tensors of the two molecules in the unit cell.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic Chemistry
Research Field:Transition Metal Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Hitchman, MA (Dr Michael Hitchman)
Author:Stratemeier, H (Dr Horst Stratemeier)
ID Code:14052
Year Published:1998
Web of Science® Times Cited:8
Deposited By:Chemistry
Deposited On:1998-08-01
Last Modified:2011-08-09
Downloads:0

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