A 35Cl NQR study of coordination of [formula omitted]chlorines in cobalt(II) 4-substituted-2,6-dichlorophenolates

The 35Cl NQR spectra of some cobalt(II) 2,4,6-trichlorophenolates, 2,6-dichlorophenolates, and 4-bromo-2,6-dichlorophenolates, including two of known crystal structures, have been investigated to study the nature of organochlorine-to-cobalt coordinate covalent bonding. As expected, the difference in...

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Bibliographic Details
Published in:Journal of molecular structure 1983-12, Vol.111, p.311-316
Main Authors: Meyer, Ron, Gagliardi, John, Wulfsberg, Gary
Format: Article
Language:English
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Summary:The 35Cl NQR spectra of some cobalt(II) 2,4,6-trichlorophenolates, 2,6-dichlorophenolates, and 4-bromo-2,6-dichlorophenolates, including two of known crystal structures, have been investigated to study the nature of organochlorine-to-cobalt coordinate covalent bonding. As expected, the difference in frequency of the coordinated and the non-coordinated ortho chlorines increases (to as high as 3 MHz, corresponding to thedonation of about 0.1 electron by the coordinated organochlorine) as the metal-chlorine bond distance decreases (to as short a distance as 262 pm). The frequency difference is found to be temperature-dependent (less at higher temperatures) if the difference at 77K exceeds about 1.3 MHz.
ISSN:0022-2860
1872-8014
DOI:10.1016/0022-2860(83)85131-X