Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 10, Pages 1696-1701Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201101367
Keywords
Alkali metals; Phosphane li-gands; Boranes; Main group elements
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Funding
- Engineering and Physical Sciences Research Council (EPSRC)
- Newcastle University
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Reduction of {(Me3Si)2CH}PCl(C6H4-2-CH2OMe) withLiAlH4, followed by reaction with BH3 center dot SMe2, gives the phosphaneborane {(Me3Si)2CH}PH(BH3)(C6H4-2-CH2OMe) (2) in good yield. Compound 2 undergoes rapid deprotonation on treatment with nBuLi, PhCH2Na or PhCH2K to give the corresponding alkali metal phosphidoborane complexes [[{(Me3Si)2CH}P(BH3)(C6H4-2-CH2OMe)]ML]2 [ML = Li(THF) (3), Na(tmeda) (4), K(pmdeta) (5)] after crystallization in the presence of the respective co-ligand L. The exact binding mode of the phosphidoborane ligand depends on the nature of the metal center in each case. However, all three alkali metal complexes crystallize as discrete dimers exhibiting MP, MO and M...BH3 contacts.
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