Kumbhar, A. S. ; Padhye, S. B. ; Puranik, V. G. ; Dhaneshwar, N. N. ; Tavale, S. S. ; Kelkar, A. A. ; Chaudhari, R. V. (1992) Catalytic intermediates in carbonylation reactions. Part 2. Isolation, electronic, electrochemical characteristics and crystal structure of 2,6-diphenylpyridinium trans-dicarbonyl tetraiodorhodate(III) Journal of Molecular Catalysis, 75 (2). pp. 187-198. ISSN 0304-5102
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0304-5102(92)80121-V
Abstract
Unusual halocarbonyl anions of Rh(III) having the formula [Rh(CO)2(I)4]- were isolated and characterized as 2,6-diphenylpyridinium and -isoquinolinium salts during the hydrocarbonylation of methyl acetate using RhCl3·3H2O as catalyst. The 2,6-diphenylpyridine salt [Rh(CO)2I4]-[C17H14N]+ crystallizes in the space group P21/n, with a=12.274(1), b=12.650(2), c=15.884(2) Å, β=93.31(1)°, V=2462.2(4) Å3, Z=4, final R=0.048. X-ray analysis shows a distorted octahedral environment around rhodium and the existence of trans- [Rh(CO)2I4]- species. The structural features indicate the influence of countercations on the electrochemical characteristics and stabilization of the trans isomer.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 89156 |
| Deposited On: | 30 Mar 2012 11:03 |
| Last Modified: | 30 Mar 2012 11:03 |
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