Enthalpy changes in oxidative addition reactions of iodine with monomeric and dimeric rhodium(I) complexes |
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| Authors: | J. U. Mondal K. G. Young D. M. Blake |
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| Affiliation: | Department of Chemistry, The University of Texas at Arlington, Arlington, Texas 76019 U.S.A. |
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| Abstract: | The heat of reaction for addition of iodine to the planar complexes RhCl(CO)dppe, Rh(dppen)2+, Rh(dppe)2+ and to the dimer Rh2Cl2(CO)2(dppm)2 has been obtained by a calorimetric method. Iodine forms stronger Rh---I bonds with RhCl(CO)dppe than with the bichelate complexes. The presence of metal-metal interaction in the iodine addition compound of Rh2Cl2(CO)2(dppm)2 makes a significant contribution to the enthalpy change for the oxidative addition. The stereochemistry of the complexes are discussed on the basis of IR and 31P NMR spectra. |
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