An investigation into the photochemical reactions of M(η5-C5H5)-(CO)4 and M(η5-C9H7)(CO)4 (M = Nb or Ta) with H2 and N2 in polyethylene matrices and liquid xenon at low temperature

Journal of the Chemical Society, Dalton Transactions

Volumn , Issue 24, 2000, Pages 4534-4541

  Childs, Gavin I ^a   Gallagher, Skip ^a   Bittenvolf, Thomas E ^a   George, Michael W ^b  

^a UNIVERSITY OF NOTTINGHAM   (United Kingdom)

^b UNIVERSITY OF IDAHO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 1342291955     PISSN: 1470479X     EISSN: None     Source Type: Journal    
DOI: 10.1039/b007023h     Document Type: Article

References (39)

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34. The relative intensities of the symmetric and antisymmetric v(C-O) vibrations, 7, )in and 7Mym, are related by the expression /asjm/ /sym = tan2(0/2), where 0 is the angle between the two CO groups. Using this relationship it is possible to estimate that the angle between the two CO groups in 1A' and 3A' is ca. 70°, suggesting that the observed bands are due to the eis isomer. This angle also indicates that the dicarbonyl-loss species (1A' and 3A') have a pyramidal geometry, suggesting that the polymer matrix fills the vacant site on the compound, acting as a "token ligand". A similar approach can be used to determine that the bis-dinitrogen species IB' and 3B' are of the cis geometry.
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