Synthesis of rhodium(II) pyrazolate complexes: Crystal structure of tetra-μ-3,5-dimethylpyrazolato dirhodium(II) bis-acetonitrile, (Rh-Rh) |
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| Authors: | Andrew R. Barron Geoffrey Wilkinson Majid Motevalli Michael B. Hursthouse |
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| Affiliation: | Chemistry Department, Imperial College, London SW7 2AY, U.K.;Chemistry Department, Queen Mary College, Mile End Road, London E1 4NS, U.K. |
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| Abstract: | The reaction of Rh2(O2CMe)4 with the sodium salt of 3,5-dimethylpyrazole (3,5-Me2pzH) in acetonitrile gives Rh2(3,5-Me2pz)4 · 2MeCN. This yellow diamagnetic compound on heating gives Rh(3,5-Me2pz)4 which in turn forms adducts with different unidentate ligands, L, to give Rh2(3,5-Me2pz)4 · 2L. The binuclear tetra bridged structure has been established for the acetonitrile complex by X-ray diffraction. The Rh-Rh distance is 2.353(3) Å and the Rh-N (acetonitrile) distance is 2.202(5) Å. Some unsubstituted pyrazolates have been made. |
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| Keywords: | Authors to whom correspondence should be addressed. |
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