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Volumn 28, Issue 7, 2009, Pages 1988-1991

Nickel(II), Palladium(II), and Platinum(II) η3-Allyl Complexes Bearing a Bidentate Titanium(IV) Phosphinoamide Ligand: A Ti←M2 Dative Bond Enhances the Electrophilieity of the π-Allyl

Author keywords

[No Author keywords available]

Indexed keywords

ALLYL COMPLEXES; DATIVE BONDS; DFT CALCULATIONS; ELECTROPHILICITY; HETERO BIMETALLIC COMPLEXES; HIGH REACTIVITIES; PHOSPHINOAMIDE;

EID: 65349099949     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om8011085     Document Type: Article
Times cited : (61)

References (47)
  • 1
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    • For reviews: a
    • For reviews: (a) Tolman, C. A. Chem. Rev. 1977, 77, 313.
    • (1977) Chem. Rev , vol.77 , pp. 313
    • Tolman, C.A.1
  • 15
    • 0034813795 scopus 로고    scopus 로고
    • +R(THF)], with no direct M-B bond interaction was reported by Peters et al. In this complex, the electron-donating property of the borate moiety enhanced the electron density of phosphorus atoms, which resulted in higher electron density of the Pt center, leading to successful C-H bond activation of arenes. See: (a) Thomas, S. J.; Peters, J. C. J. Am. Chem. Soc. 2001, 123, 5100.
    • +R(THF)], with no direct M-B bond interaction was reported by Peters et al. In this complex, the electron-donating property of the borate moiety enhanced the electron density of phosphorus atoms, which resulted in higher electron density of the Pt center, leading to successful C-H bond activation of arenes. See: (a) Thomas, S. J.; Peters, J. C. J. Am. Chem. Soc. 2001, 123, 5100.
  • 20
    • 12844277296 scopus 로고    scopus 로고
    • 2. See: (a) Cornelissen, C: Erker, G.; Kehr, G.; Fröhlich, R. Organometallics 2005, 24, 214.
    • 2. See: (a) Cornelissen, C: Erker, G.; Kehr, G.; Fröhlich, R. Organometallics 2005, 24, 214.
  • 23
    • 65349116847 scopus 로고    scopus 로고
    • See ref 5
    • (d) See ref 5.
  • 24
    • 0002894082 scopus 로고    scopus 로고
    • For other examples of early-late heterobimetallic complexes which can act as catalysts for hydroformylation, see: (a) Choukroun, R, Gervais, D, Kalck, P, Senocq, F. J. Organomet. Chem. 1987, 335, C9
    • For other examples of early-late heterobimetallic complexes which can act as catalysts for hydroformylation, see: (a) Choukroun, R.; Gervais, D.; Kalck, P.; Senocq, F. J. Organomet. Chem. 1987, 335, C9.
  • 30
    • 65349133835 scopus 로고    scopus 로고
    • Complexes of type C including early and late transition elements have been investigated in the chemistry of early-late heterobimetallic (ELHB) complexes. There are several ELHB complexes with a dative bond, in which the M1-M2 interaction is discussed from the point of view of crystallography and theoretical calculations.9 However, only a few papers have been reported on the reactivities
    • 9 However, only a few papers have been reported on the reactivities.
  • 40
    • 65349147961 scopus 로고    scopus 로고
    • 2 center of 2a-c were reduced compared with those of 3a-c.
    • 2 center of 2a-c were reduced compared with those of 3a-c.
  • 41
    • 65349187329 scopus 로고    scopus 로고
    • One of the reviewers suggested that NBO analysis may be a better tool for understanding the bonding situation. According to this suggestion, we carried out the NBO calculations of complexes 2a-c at various levels of theory. However, the Ti-M interaction is too weak to describe the bonding situation in 2a-c for NBO calculations
    • One of the reviewers suggested that NBO analysis may be a better tool for understanding the bonding situation. According to this suggestion, we carried out the NBO calculations of complexes 2a-c at various levels of theory. However, the Ti-M interaction is too weak to describe the bonding situation in 2a-c for NBO calculations.
  • 42
    • 65349144934 scopus 로고    scopus 로고
    • 31P NMR spectra of the latter are complicated, suggesting decomposition of 2a-c under these conditions.
    • 31P NMR spectra of the latter are complicated, suggesting decomposition of 2a-c under these conditions.
  • 43
    • 65349135030 scopus 로고    scopus 로고
    • Catalytic allylation with nucleophiles is generally performed by using allyl carboxylates or allyl carbonates.16 Since the complexes 2a-c are generally sensitive toward compounds containing oxygen atoms, exposure of 2a-c to allyl carboxylates or allyl carbonates instantly results in decomposition of the complexes. Interestingly, 2a-c are stable toward the compounds containing halogen atoms, and the reactions with allyl chloride proceed smoothly as described in the text
    • 16 Since the complexes 2a-c are generally sensitive toward compounds containing oxygen atoms, exposure of 2a-c to allyl carboxylates or allyl carbonates instantly results in decomposition of the complexes. Interestingly, 2a-c are stable toward the compounds containing halogen atoms, and the reactions with allyl chloride proceed smoothly as described in the text.
  • 45
    • 0003321649 scopus 로고
    • Transition Metal Allyl Complexes: Pd, W, Mo-assisted Nucleophilic Attack
    • Abel, E. W, Stone, F. G. A, Wilkinson, G, Eds, Pergamon Press: New York, Chapter 8.2
    • (b) Harrington, P. J. Transition Metal Allyl Complexes: Pd, W, Mo-assisted Nucleophilic Attack. In Comprehensive Organometallic Chemistty II; Abel, E. W., Stone, F. G. A., Wilkinson, G., Eds.; Pergamon Press: New York, 1995; Vol. 12, Chapter 8.2.
    • (1995) Comprehensive Organometallic Chemistty II , vol.12
    • Harrington, P.J.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.