Synthesis and Characterisation of Low-Coordinate Transition-Metal Complexes Stabilised by Sterically Demanding Carbazolido Ligands
✍ Scribed by Andrew E. Ashley; Andrew R. Cowley; Jennifer C. Green; David R. Johnston; David J. Watkin; Deborah L. Kays
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 278 KB
- Volume
- 2009
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Abstract
The synthesis and characterisation of the homoleptic transition‐metal complexes (1,8‐Ph~2~‐3,6‐Me~2~C~12~H~4~N)~2~M (M = Cr, 1; M = Mn, 2; M = Fe, 3; M = Co, 4) are described. Formally two‐coordinate, the solid‐state structures of 2 and 3 reveal near‐linear N–M–N geometries and significant bending of the flanking phenyl groups towards the metal centres. Solid‐state magnetic measurements reveal high spin metal centres in 1–4; computational calculations for the model complexes M(1,8‐Ph~2~C~12~H~6~N)~2~ (M = Cr–Co) confirm the presence of high‐spin configurations within these bis‐carbazolido compounds and an orbital ordering of δ < π < σ for these systems.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)