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Étude des isomères (CO)Fe(PF3)4 |
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| Authors: | Michaë l Bigorgne Jai Beni Pd. Tripathi |
| Affiliation: | Laboratoire de Chimie de Coordination, École Nationale Supérieure de Chimie, 11 rue P. et M. Curie, 75- Paris 5 France Institut für Anorganische und Analytische Chemie der Technischen Universität Berlin Allemagne |
| Abstract: | Assignments of a certain number of vibrational bands of (CO)Fe(PF3)4 are made with reference to the C3v and C2v isomers. A study of the Raman and spectra at low temperature revealed that in the solid state only one isomer exists. Furthermore, a comparative study of liquid (CO)Fe(PF3)4 and HCo(PF3)4 of molecular symmetry C3v was made. These two approaches made it possible to determine the difference in enthalpy between the two isomers of the iron complex (+0-52±0.05 kcal.mole−1) in the liquid state, as well as to verify the assignments proposed previously. The greater stability of the C2v isomer is discussed. |
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