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Issue 11, 1989
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Synthesis and structures of the 1,3-diphospha-2-metallapentanes [LnM{P(Ph)C6H4PPh}][MLn= ZrCp″2(2), rac-SnR2(3), SnMe2, or BAr; Cp″=η-C5H3(SiMe3)2-1,3, R = CH(SiMe3)2, Ar = C6H2But3-2,4,6]; X-ray structures of complexes (2) and (3)

Rakesh Bohra,  Peter B. Hitchcock,  Michael F. Lappert  and  Wing-Por Leung 

Abstract

Reactions of LnMCl2 with 1,2-C6H4(PPh)2[Li(tmeda)]2 yield the metallacycles [Ln[graphic omitted]Ph}][MLn= ZrCp″2(2), rac-SnR2(3), meso-(4a) and rac-(4b) SnMe2, and BAr (5); tmeda =(Me2NCH2)2, [C with combining macron]p″=η-C5H3(SiMe3)2-1,3; R = CH(SiMe3)2, Ar = C6H2But3-2,4,6], complex (2)[unlike (3)] having distinct P environments in the crystal, P(1) being planar and P(2) pyramidal and Zr–P(1) < Zr–P(2); in C6D5CD3 solution, the low temperature PMPCC skeletal arrangement in (2) and (5) corresponds to that of crystalline (2), with exchange processes being evident at higher temperatures [also noted for (3)].

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Article type: Paper
DOI: 10.1039/C39890000728
Citation: J. Chem. Soc., Chem. Commun., 1989,0, 728-730
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    Synthesis and structures of the 1,3-diphospha-2-metallapentanes [LnM{P(Ph)C6H4PPh}][MLn= ZrCp″2(2), rac-SnR2(3), SnMe2, or BAr; Cp″=η-C5H3(SiMe3)2-1,3, R = CH(SiMe3)2, Ar = C6H2But3-2,4,6]; X-ray structures of complexes (2) and (3)

    R. Bohra, P. B. Hitchcock, M. F. Lappert and W. Leung, J. Chem. Soc., Chem. Commun., 1989, 0, 728
    DOI: 10.1039/C39890000728

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