A Benzodiphosphaborolediide |
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| Authors: | Dr Kyle G Pearce Elinor P F Canham Prof Dr John F Nixon Dr Ian R Crossley |
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| Institution: | Department of Chemistry, University of Sussex, Falmer, Brighton, BN1 9QJ UK |
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| Abstract: | The first example of a diphosphaborolediide, the benzo-fused C6H4P2BPh]2− ( 12− ), is prepared from ortho-bis(phosphino)benzene (C6H4{PH2}) and dichlorophenylborane, via a sequential lithiation approach. The dilithio-salt can be obtained as an oligomeric THF solvate or discrete TMEDA adduct, both of which are fully characterized, including by X-ray diffraction. Alongside NICS calculations, data strongly suggest some aromaticity within 12− , which is further supported by preliminary coordination studies that demonstrate η5-coordination to a zerovalent molybdenum center, as observed crystallographically for the oligomeric {Mo(CO)3(η5- 1 )}{μ-η1-Mo(CO)3(TMEDA)}2] ⋅ μ-Li(THF)]μ-Li(TMEDA)]. |
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| Keywords: | anions boranes borolediide phosphane phosphacycle |
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