Synthetic studies for the preparation of phosphorus carbonyl rhenacycles with the selenoimidodiphosphinate ligand [N(SePPh2)2] |
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| Authors: | Lucila Má rquez-Pallares,Marisol Reyes-Lezama,Herbert Hö pfl |
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| Affiliation: | a Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, 04510 México, D.F., Mexico
b Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, C.P. 62210 Cuernavaca Morelos, Mexico |
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| Abstract: | The synthesis of the rhenacycles [Re(CO)3(PR3){Ph2P(Se)NP(Se)Ph2-κ2Se}], PR3 = PPh3 (1), PMePh2 (2), and PMe2Ph (3) by a straightforward high yield procedure is described. Attempts at the preparation of the spiro [Re(CO)2(Ph2PCH2CH2PPh2-κ2P){Ph2P(Se)NP(Se)Ph2-κ2Se}] resulted in the formation of complexes [Re2(CO)6{Ph2P(Se)NP(Se)Ph2-κ2Se}2(μ-Ph2PCH2CH2PPh2)] (4) and [Re(CO)3(Ph2PCH2CH2PPh2-κ2P){Ph2P(Se)NP(Se)Ph2-κSe}] (5). All new inorganic rhenacycles 1-5 were characterized in solution and in solid state. The X-ray diffraction analysis of [Re(CO)3PPh3{Ph2P(Se)NP(Se)Ph2-κ2Se}] showed that its MnSePNPSe ring conformation is sensitive to temperature. |
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| Keywords: | Rhenium(I) complexes 77Se NMR Carbonyl substitution reactions Tetraphenyldiselenoimidodiphosphinato complexes Tertiary phosphines Bis(diphenylphosphino)ethane |
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