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Volumn 118, Issue 8, 1996, Pages 1981-1996

Reactions of Cp2Ta(CH2)(CH3) with substituted and unsubstituted metal carbonyls (groups 7, 8, and 9). Evidence for intermediates involved in the carbon-carbon bond-forming steps of the reduction and deoxygenation of CO

Author keywords

[No Author keywords available]

Indexed keywords

METAL COMPLEX;

EID: 0030000733     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja951685j     Document Type: Article
Times cited : (16)

References (52)
  • 16
    • 0000554170 scopus 로고
    • and references cited there
    • The formation of a bridging oxo complex by displacement of a solvent molecule from a late-metal species by the oxo ligand of an early-metal center has been documented before; see: Pilato, R. S.; Rubin, D Geoffroy, G. L.; Rheingold, A. L. Inorg. Chem. 1990, 29, 1986 and references cited there.
    • (1990) Inorg. Chem. , vol.29 , pp. 1986
    • Pilato, R.S.1    Rubin, D.2    Geoffroy, G.L.3    Rheingold, A.L.4
  • 18
    • 5244285587 scopus 로고    scopus 로고
    • note
    • The zwitterion appears to be stable with respect to addition of more 1.
  • 23
    • 5244247022 scopus 로고
    • Phosphine-substituted uranium carbene complexes have been shown to undergo a similar reaction with dinuclear iron carbonyls: compare with: Gilje, J. W.; Cramer, R. E. Inorg. Chim. Acta 1987, 139, 177.
    • (1987) Inorg. Chim. Acta , vol.139 , pp. 177
    • Gilje, J.W.1    Cramer, R.E.2
  • 24
    • 85088078445 scopus 로고    scopus 로고
    • note
    • 10 at -78 °C, the mixture was heterogeneous during the initial stages of the reaction.
  • 26
    • 0000782623 scopus 로고
    • and references cited therein
    • It is also possible that the difference in geometry concerning the metal-carbonyl bond lengths can be attributed to the difference in metal orbital character between the early- and late-metal centers: see. Simpson, C. Q ; Hall, M. B. J. Am. Chem. Soc. 1992, 114, 1641 and references cited therein.
    • (1992) J. Am. Chem. Soc. , vol.114 , pp. 1641
    • Simpson, C.Q.1    Hall, M.B.2
  • 27
    • 5244374084 scopus 로고    scopus 로고
    • note
    • The formal oxidation state (Ta(III) vs Ta(V)) is unclear because the bridging propyne ligand is neither linear (an argument for a Ta(III) center) nor bent to the extent of a normal alkene (the Ta-C-C angle in 20 is 151.9(8)°) which would lead to a cyclopropene-like Ta(V) structure. We believe that there is at least a significant contribution from the Ta(III) resonance form.
  • 29
    • 33847088595 scopus 로고
    • Ru carbonyl clusters topically have fewer bridging carbonyls when compared to the analogous Fe clusters. For example. see: Churchill. M-R., Hollander, F. J.; Hutchinson, J. P. Inorg. Chem. 1977, 16, 2655.
    • (1977) Inorg. Chem. , vol.16 , pp. 2655
    • Churchill, M.-R.1    Hollander, F.J.2    Hutchinson, J.P.3
  • 35
    • 33847086579 scopus 로고
    • In a related (alkyl)(aryl) rhenium complex, methyl migration has been reported to occur approximately 30 times faster than the corresponding phenyl group migration: see: Casey. C. P.; Scheck, D. M. J. Am. Chem. Soc. 1980, 102, 2723.
    • (1980) J. Am. Chem. Soc. , vol.102 , pp. 2723
    • Casey, C.P.1    Scheck, D.M.2
  • 36
    • 0000531829 scopus 로고
    • For a general review of the Wittig reaction, see: Maercker, A. Org. React. 1965, 14, 270.
    • (1965) Org. React. , vol.14 , pp. 270
    • Maercker, A.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.