Dynamic properties of the fluxional Rh2H(μ-PPh2)2(PPh3)3 complex |
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| Authors: | Domonique O Downing |
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| Institution: | Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States |
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| Abstract: | The rhodium dimer Rh2H(PPh2)2(PPh3)3]− was prepared from RhCl(PPh3)3 and K4Sn9 in the presence of 2,2,2-cryptand in ethylenediamine/toluene solvent mixtures. The K(2,2,2-crypt)]+ salt was isolated and characterized via NMR and X-ray diffraction studies. The solid state structure reveals a binuclear, diphenylphosphido-bridged, 32 electron Rh(I)-Rh(I) complex with edge-shared tetrahedral and square planar Rh centers with overall Cs point symmetry. 1-D and 2-D 1H, 31P, and 31P{1H} NMR experiments were used to characterize the complex. |
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| Keywords: | Dirhodium complexes Crystal structure Fluxionality |
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