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Determination of the free activation energy for the breaking of the P---Ag bond in [(η-p-cymene)Ru(μ-pz)3Ag(PPh3)] |
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| Authors: | Daniel Carmona Joaquina Ferrer María Pilar Lamata Luis A OroHans-Heinrich Limbach Gerd SchererJos Elguero María Luisa Jimeno |
| Institution: | Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza Spain Institut für Organische Chemie, Fachbereich Chemie, Freie Universität Berlin, Takustrasse 3, D-14195 Berlin Germany Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid Spain |
| Abstract: | The Arrhenius equation corresponding to the process P---Ag+P*---Ag*→---P---Ag*+P*---Ag has been determined for (η6-p-cymene)Ru(μ-pz)3Ag(PPh3)] (1) by complete line-shape analysis of the 31P NMR spectra between ?40°C and +30°C. It has the form K = 1011.8± e(?46±5 kJ mol?1/RT). The preexponential term, log A = 11.8 corresponds to a small activation entropy, whereas the activation energy, 46 kJ mol?1 is comparable to those determined for other phosphorus—metal compounds. |
| Keywords: | Silver Ruthenium Phosphorus Nuclear magnetic resonance |
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