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Vibrational spectra of halomethylidynetricobalt nonacarbonyl complexes

✍ Scribed by Martin W. Howard; Ian A. Oxton; Donald B. Powell; Philip Skinner

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
413 KB
Volume
37
Category
Article
ISSN
1386-1425

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✦ Synopsis

Infrared and Raman spectra (1400-100 cm-') are reported for the metal cluster complexes (fiL) -YC)CO~(CO)~: Y = F, Cl and Br, and vibrational assignments for the YCCo, groupings proposed. Approximate force fields have been calculated for these groups and the results are compared with those derived in earlier work on related systems. The unusually high frequencies attributed to carbon-halogen stretching modes in these complexes are shown to result from appreciable coupling of these modes with the symmetric Co-C stretching mode.

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## Abstract The infrared and Raman spectra of lithium, zinc, calcium and magnesium complexes of L‐pyroglutamic acid were recorded and are briefly discussed. For the first three compounds the spectral discussion is based on their known structural characteristics. Comparing the spectroscopic behaviou