Molybdenum Tricarbonyl Complexes of 1-Substituted Borepins

Autor:	Wolfram Klein, Samir M. Al-Taweel, Jeff W. Kampf, Christian Drescher, Arthur J. Ashe
Rok vydání:	1997
Předmět:	Inorganic Chemistry Crystallography chemistry Nucleophile Molybdenum Organic Chemistry Proton NMR chemistry.chemical_element Nuclear magnetic resonance spectroscopy Physical and Theoretical Chemistry Carbon-13 NMR Ring (chemistry) Carbon
Zdroj:	Organometallics. 16:1884-1889
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om970017z
Popis:	The reaction of 1-substituted borepins C6H6BX, where X = Me, Ph, and Cl, with Py3Mo(CO)3 and BF3·OEt2 affords the corresponding borepin molybdenum tricarbonyl complexes. Similar reaction of 1-methoxyborepin affords (C6H6BF)Mo(CO)3. The reaction of (C6H6BCl)Mo(CO)3 with appropriate nucleophiles affords the boron-substituted complexes (C6H6BX)Mo(CO)3, where X = H, OCH3, OH, O1/2, N(iPr)2, N(CH2)5, N(c-C6H11)2, and NBnMe. All complexes (C6H6BX)Mo(CO)3 have been compared using 1H NMR, 11B NMR, and 13C NMR spectroscopies. The X-ray structure of (C6H6BN(iPr)2)Mo(CO)3 shows that Mo is η6-coordinated to the ring carbon atoms but not to B. Rates of rotation about the B−N bonds of (C6H6BN(iPr)2)Mo(CO)3 and (C6H6BNBnMe)Mo(CO)3 have been measured using variable-temperature NMR spectroscopy.
Databáze:	OpenAIRE
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