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Stabilization of cobalt(I) by the tripodal ligands tris(2-pyridyl)methane and tris(2-pyridyl)phosphine. Structural, spectroscopic and ab initio studies of the [CoL(2)](n+) species

Citation

Adam, KR and Anderson, PA and Astley, T and Atkinson, IM and Charnock, JM and Garner, CD and Giulbis, JM and Hambley, TW and Hitchman, MA and Keene, FR and Tiekink, ERT, Stabilization of cobalt(I) by the tripodal ligands tris(2-pyridyl)methane and tris(2-pyridyl)phosphine. Structural, spectroscopic and ab initio studies of the [CoL(2)](n+) species, Dalton Transactions, (4) pp. 519-530. ISSN 0300-9246 (1997) [Refereed Article]

DOI: doi:10.1039/a605967h

Abstract

The nature of bonding in a series of complexes [CoL 2 ] n+ [L = the tripodal ligand tris(2-pyridyl)methane or tris(2-pyridyl)phosphine, n = 1-3] has been investigated by single-crystal X-ray diffraction, X-ray absorption and electronic spectroscopy and density functional theory ab initio calculations. The structural studies reveal that the cobalt ions each exist in a distorted octahedral geometry defined by six N-donor atoms; the cations are all centrosymmetric. In both series of complexes the bond lengths Co I -N ≈ Co II -N > Co III -N. Data from the various studies indicate that the 'cobalt(I)' state of the complex [Co{X(C 5 H 4 N-2) 3 } 2 ] + (X = CH or P) is better described by the d 8 cobalt(I)-ligand formulation rather than as d 7 cobalt(II)-ligand radical.

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:Astley, T (Mr Timothy Astley)
Author:Hitchman, MA (Dr Michael Hitchman)
ID Code:11956
Year Published:1997
Web of Science® Times Cited:20
Deposited By:Chemistry
Deposited On:1997-08-01
Last Modified:2011-08-15
Downloads:0

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