- Synthesis and Structure of Cp3U=CHPMe3: A Compound with a U=C Multiple Bond
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Green, crystalline Cp3U=CHPMe3 has been synthesized by the reaction of Cp3UCl with Li2PMe2 or CH2=PMe3.Its crystal structure has been determined by single crystal X-ray diffraction.The short U=CH bond distance, 2.274(8) Angstroem, and large U-C-P angle, 143.5(5) deg, indicate uranium-carbon multiple bond character.The 1J(13C1H) coupling constants within the CH group between uranium and phosphorus in Cp3U=CHPMe3 (95 Hz), Cp3U=CHPMe2Ph (100 Hz), and Cp3U=CHPPh2Me (113 Hz) are surprisingly small, but no agostic interaction UCHP can be derived from the structural data.
- Cramer, Roger E.,Bruck, Michael A.,Edelmann, Frank,Afzal, Dawood,Gilje, John W.,Schmidbaur, Hubert
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p. 417 - 420
(2007/10/02)
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