메뉴 건너뛰기




Volumn 17, Issue 10, 1978, Pages 2880-2885

Phosphoranes. 8. Dynamic carbon-13 NMR Studies of a Series of Fluxional Tetraalkylphosphoranes (CF3)3CH3PY [Y = fluorine, chlorine, methoxy, methylthio, dimethylamino]

Author keywords

[No Author keywords available]

Indexed keywords


EID: 27444434288     PISSN: 00201669     EISSN: 1520510X     Source Type: Journal    
DOI: 10.1021/ic50188a040     Document Type: Article
Times cited : (20)

References (36)
  • 14
    • 85021569879 scopus 로고
    • Pergamon Press
    • J. W. Emsley, J. Feeney, and L. H. Sutcliffe, “High Resolution Nuclear Magnetic Resonance Spectroscopy”, Vol. 1 and 2, Pergamon Press, London, 1966.
    • (1966) and , vol.1
    • Emsley, J.W.1    Feeney, J.2    Sutcliffe, L.H.3
  • 15
    • 0009600914 scopus 로고
    • Kö hler, J. Am. Chem. Soc
    • H. Schmidbaur, W. Buchner, and F. H. Kö hler, J. Am. Chem. Soc., 96, 6208 (1974).
    • (1974) , vol.96 , pp. 6208
    • Schmidbaur, H.1    Buchner, W.2
  • 27
    • 85021518352 scopus 로고    scopus 로고
    • A one-step BPR effects a trigonal-bipyramidal (TBP) to TBP rearrangement
    • (via the square-pyramidal transition state or intermediate)
    • A one-step BPR effects a trigonal-bipyramidal (TBP) to TBP rearrangement (via the square-pyramidal transition state or intermediate). In all cases considered herein, the product is a distinctly different isomer of the system in contrast to XPY4 systems and the product isomer must return to an equilibrated, indistinguishably rearranged form of the initial isomer. Preserving the pivot and reverting by the reverse BPR process implies that the product has a short lifetime on the NMR time scale or the BPR process is instantaneous, but in either ease axial-equatorial interchange does not result. Changing the pivot in the rearrangement implies the existence of a TBP intermediate with a sufficiently long lifetime for the species to “forget” the originally employed pivot and execute a second BPR with an arbitrarily chosen pivot achieving the desired equilibration.
    • In all cases considered herein, the product is a distinctly different isomer of the system in contrast to XPY4 systems and the product isomer must return to an equilibrated, indistinguishably rearranged form of the initial isomer.
  • 28
    • 33947084978 scopus 로고
    • A locally adapted version of the program exchsys described by J. K. Kreiger, J. M. Deutsch, and G. M. Whitesides, Inorg. Chem.
    • Kreiger
    • A locally adapted version of the program exchsys described by J. K. Kreiger, J. M. Deutsch, and G. M. Whitesides, Inorg. Chem., 12, 1535 (1973). Details of the program are given in the thesis of J. K. Kreiger, MIT, Cambridge, Mass., 1971.
    • (1535) Details of the program are given in the thesis of J. K. , vol.12 , pp. 1971
  • 29
    • 85023346123 scopus 로고
    • Chemical Kinetics
    • K. Laidler, “Chemical Kinetics”, McGraw-Hill, New York, N.Y., 1950.
    • (1950) McGraw-Hill
    • Laidler, K.1
  • 32
    • 0001291949 scopus 로고
    • Kutzelnigg
    • F. Keil and W. Kutzelnigg, J. Am. Chem. Soc., 97, 3623 (1975)
    • (1975) J. Am. Chem. Soc. , vol.97 , pp. 3623
    • Keil, F.1
  • 35
    • 85021569370 scopus 로고
    • Carbon-13 Nuclear Magnetic Resonance Spectroscopy
    • J. B. Stothers, “Carbon-13 Nuclear Magnetic Resonance Spectroscopy”, Academic Press, New York, N.Y., 1972.
    • (1972) Academic Press
    • Stothers, J.B.1
  • 36
    • 0003966984 scopus 로고
    • Pulse and Fourier Transform NMR
    • T. C. Farrar and E. D. Becker, “Pulse and Fourier Transform NMR”, Academic Press, New York, N.Y., 1971.
    • (1971) Academic Press
    • Farrar, T.C.1    Becker, E.D.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.