On rhodium(III) chloride complexes with N,N-dimethylformamide |
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| Authors: | Yu S Varshavskii T G Cherkasova V N Khrustalev I S Podkorytov A B Nikol’skii |
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| Institution: | (1) Research Institute of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, St. Petersburg, 198504, Russia;(2) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia;(3) Lebedev Research Institute of Synthetic Rubber, ul. Gapsal’skaya 1, St. Petersburg, 198035, Russia |
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| Abstract: | A prolonged storage of a solution of RhCl3·nH2O in N,N-dimethylformamide (DMF) at room temperature is attended by the consecutive formation of two precipitates, which mainly contain the (CH3)2NH2]RhCl5(DMF)] complex (I) and the complex RhCl3(DMF)3] (II) liberates. The addition of PPh4Cl to an aqueous solution of complex I brings about the precipitation of PPh4]RhCl4(H2O)2] (III). Complex II (a mixture of mer-and fac-isomers) can be obtained also by treatment of RhCl3(CH3CN)3] with DMF. In the course of the latter reaction, the formation of intermediate complex RhCl3(CH3CN)2(DMF)] (IV) is observed. Complexes I–IV are characterized by elemental analysis; complexes I, II, and IV are characterized by the IR and 1H and 13C NMR spectra. The structures of III and IV are determined by X-ray diffraction analysis. |
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