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Volumn 13, Issue 18, 2007, Pages 5282-5293

How 77Se NMR chemical shifts originate from pre-α, α, β, and γ effects: Interpretation based on molecular orbital theory

Author keywords

Ab initio calculations; Ligand effects; NMR spectroscopy; Selenium

Indexed keywords

CHEMICAL SHIFT; MOLECULAR INTERACTIONS; MOLECULAR STRUCTURE; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; PHASE TRANSITIONS; PROTONS;

EID: 34250876876     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200601792     Document Type: Article
Times cited : (17)

References (86)
  • 1
    • 0003420012 scopus 로고    scopus 로고
    • Eds, D. M. Grant. R. K. Harris, Wiley, New York
    • a) Encyclopedia of Nuclear Magnetic Resonance (Eds.: D. M. Grant. R. K. Harris), Wiley, New York, 1996;
    • (1996) Encyclopedia of Nuclear Magnetic Resonance
  • 4
    • 0004222153 scopus 로고
    • Ed, R. McWeeny, Academic Press, New York
    • d) Spins in Chemistry (Ed.: R. McWeeny), Academic Press, New York, 1970;
    • (1970) Spins in Chemistry
  • 9
    • 0003987564 scopus 로고
    • Ed, D. Liotta, Wiley-Interscience, New York
    • c) Organic Selenium Chemistry (Ed.: D. Liotta), Wiley-Interscience, New York, 1987;
    • (1987) Organic Selenium Chemistry
  • 15
    • 0004060681 scopus 로고    scopus 로고
    • Eds, T. M. Klapotke, M. Broschag, Wiley, New York
    • 77Se NMR Chemical Shifts (Eds.: T. M. Klapotke, M. Broschag), Wiley, New York, 1996;
    • (1996) 77Se NMR Chemical Shifts
  • 30
    • 34250795451 scopus 로고    scopus 로고
    • [3]
    • [3]
  • 31
    • 34250797215 scopus 로고    scopus 로고
    • [3]
    • [3]
  • 32
    • 0037439843 scopus 로고    scopus 로고
    • Although the contribution of relativistic terms has been pointed out for heavier atoms, the perturbation would be small for the selenium nucleus: R. Fukuda, M. Hada, H. Nakatsuji, J. Chem. Phys. 2003, 118, 1015-1026
    • Although the contribution of relativistic terms has been pointed out for heavier atoms, the perturbation would be small for the selenium nucleus: R. Fukuda, M. Hada, H. Nakatsuji, J. Chem. Phys. 2003, 118, 1015-1026:
  • 39
    • 34250875507 scopus 로고    scopus 로고
    • 3rd ed, Eds, P. W. Atkins, R. S. Friedman, Oxford, New York, Chap. 13
    • b) Molecular Quantum Mechanics. 3rd ed. (Eds.: P. W. Atkins, R. S. Friedman), Oxford, New York, 1997, Chap. 13.
    • (1997) Molecular Quantum Mechanics
  • 40
    • 34250805195 scopus 로고    scopus 로고
    • This decomposition includes a small degree of arbitrariness due to the dependence on coordinate origin, though it is not detrimental to our chemical analyses and insights into 77Se NMR spectroscopy
    • 77Se NMR spectroscopy.
  • 41
    • 34250884968 scopus 로고    scopus 로고
    • p. Such typical cases are detected in the β effect.
    • p. Such typical cases are detected in the β effect.
  • 42
    • 34250865417 scopus 로고    scopus 로고
    • d are exactly expressed by Ramsey's Equation, and they are approximately calculated in the framework of Hartree-Fock (HF) or DFT theory: N. F. Ramsey. Phys. Rev. 1949, 77, 567-575;
    • d are exactly expressed by Ramsey's Equation, and they are approximately calculated in the framework of Hartree-Fock (HF) or DFT theory: N. F. Ramsey. Phys. Rev. 1949, 77, 567-575;
  • 48
    • 34250810006 scopus 로고    scopus 로고
    • Based on second-order perturbation theory at the level of the HF and single-excitation CI approximation. σp on a resonance nucleus N is shown to be proportional to reciprocal orbital energy gap (εa-εi)-1 as expressed in Equation 5, where ψk is the fc-th orbital function. L̂ z,N the orbital angular momentum around the resonance nucleus, and rN the distance from the nucleus N
    • N the distance from the nucleus N.
  • 49
    • 34250840427 scopus 로고    scopus 로고
    • j transitions.
    • j transitions.
  • 50
    • 34250890538 scopus 로고    scopus 로고
    • Gaussian03, Revision B.05. M. J. Frisch. G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery, Jr, T. Vreven, K. N. Kudin, J. C. Burant, J. M. Millam, S. S. Iyengar, J. Tomasi, V. Barone, B. Mennucci, M. Cossi, G. Scalmani, N. Rega, G. A. Petersson, H. Nakatsuji, M. Hada, M. Ehara, K. Toyota, R. Fukuda, J. Hasegawa, M. Ishida, T. Nakajima, Y. Honda, O. Kitao, H. Nakai, M. Klene, X. Li, J. E. Knox, H. P. Hratchian, J. B. Cross, V. Bakken, C. Adamo, J. Jaramillo, R. Gomperts, R. E. Stratmann, O. Yazyev, A. J. Austin, R. Cammi, C. Pomelli, J. W. Ochterski, P. Y. Ayala, K. Morokuma, G. A. Voth, P. Salvador, J. J. Dannenberg, V. G. Zakrzewski, S. Dapprich, A. D. Daniels, M. C. Strain, O. Farkas, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. V. Ortiz, Q. Cui, A. G. Baboul, S. Clifford, J. Cioslowski, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. L. Martin, D. J. Fox, T. Keith, M. A. Al-Laham, C. Y. Peng, A. Nanayak
    • Gaussian03, Revision B.05. M. J. Frisch. G. W. Trucks, H. B. Schlegel, G. E. Scuseria, M. A. Robb, J. R. Cheeseman, J. A. Montgomery, Jr., T. Vreven, K. N. Kudin, J. C. Burant, J. M. Millam, S. S. Iyengar, J. Tomasi, V. Barone, B. Mennucci, M. Cossi, G. Scalmani, N. Rega, G. A. Petersson, H. Nakatsuji, M. Hada, M. Ehara, K. Toyota, R. Fukuda, J. Hasegawa, M. Ishida, T. Nakajima, Y. Honda, O. Kitao, H. Nakai, M. Klene, X. Li, J. E. Knox, H. P. Hratchian, J. B. Cross, V. Bakken, C. Adamo, J. Jaramillo, R. Gomperts, R. E. Stratmann, O. Yazyev, A. J. Austin, R. Cammi, C. Pomelli, J. W. Ochterski, P. Y. Ayala, K. Morokuma, G. A. Voth, P. Salvador, J. J. Dannenberg, V. G. Zakrzewski, S. Dapprich, A. D. Daniels, M. C. Strain, O. Farkas, D. K. Malick, A. D. Rabuck, K. Raghavachari, J. B. Foresman, J. V. Ortiz, Q. Cui, A. G. Baboul, S. Clifford, J. Cioslowski, B. B. Stefanov, G. Liu, A. Liashenko, P. Piskorz, I. Komaromi, R. L. Martin, D. J. Fox, T. Keith, M. A. Al-Laham, C. Y. Peng, A. Nanayakkara, M. Challacombe, P. M. W. Gill, B. Johnson, W. Chen, M. W. Wong, C. Gonzalez, J. A. Pople, Gaussian, Inc., Pittsburgh, PA, 2003.
  • 58
    • 33750181960 scopus 로고
    • R. McWeeny, Phys. Rev. 1962, 126, 1028-1034;
    • (1962) Phys. Rev , vol.126 , pp. 1028-1034
    • McWeeny, R.1
  • 63
    • 34250889137 scopus 로고    scopus 로고
    • 2Se), see a) W. Kutzelnigg, U. Fleischer, C. van Wüllen, Shielding Calculations: IGLO Method in Encyclopedia of Nuclear Magnetic Resonance, 7, (Eds.: D.M. Grant, R. K. Harris), Wiley, New York, 1996, 4284-4291;
    • 2Se), see a) W. Kutzelnigg, U. Fleischer, C. van Wüllen, "Shielding Calculations: IGLO Method" in Encyclopedia of Nuclear Magnetic Resonance, Vol. 7, (Eds.: D.M. Grant, R. K. Harris), Wiley, New York, 1996, 4284-4291;
  • 65
    • 0035916620 scopus 로고    scopus 로고
    • P.J. Wilson, Mol. Phys. 2001, 99, 363-367. See also ref. [7].
    • c) P.J. Wilson, Mol. Phys. 2001, 99, 363-367. See also ref. [7].
  • 66
    • 34250853277 scopus 로고    scopus 로고
    • 1(Se) in PhSeH and PhSeMe is discussed in ref. [7]. The orientational effect is not so large between the two methods.
    • 1(Se) in PhSeH and PhSeMe is discussed in ref. [7]. The orientational effect is not so large between the two methods.
  • 67
    • 34250829457 scopus 로고    scopus 로고
    • 24
    • 24
  • 71
    • 34250848692 scopus 로고    scopus 로고
    • 2O.
    • 2O.
  • 72
    • 34250826901 scopus 로고    scopus 로고
    • 1(MP2)-493.2 (n = 29, r = 0.997) (9)
    • 1(MP2)-493.2 (n = 29, r = 0.997) (9)
  • 73
    • 34250844199 scopus 로고    scopus 로고
    • j, transition is intrinsically zero.
    • j, transition is intrinsically zero.
  • 74
    • 34250869932 scopus 로고    scopus 로고
    • In the case of H2Se, Ψ16, Ψ17 and Ψ18 are mainly constructed by 4py(Se, 4p x(Se, and 4pz(Se, respectively; Ψ7, Ψ8, and Ψ9, by 3py(Se, 3p x(Se, and 3pz(Se, respectively; and Ψ3, Ψ4, and Ψ5 by 2py(Se, 2p x(Se, and 2pzSe, respectively
    • z(Se), respectively.
  • 75
    • 34250796028 scopus 로고    scopus 로고
    • 7 are constructed by two 1s(C).
    • 7 are constructed by two 1s(C).
  • 76
    • 34250857257 scopus 로고    scopus 로고
    • -3 terms, and the overlap integrals containing the angular momentum operator L̂.
    • -3 terms, and the overlap integrals containing the angular momentum operator L̂.
  • 77
    • 34250800108 scopus 로고    scopus 로고
    • While the point corresponding to nPrSe, Cs) is almost on the correlation line in Figure 4, that for nPrSe, g deviates above the line. This must be due to the very large upfield contribution from the Ψi→Ψj transition in nPrSe, g
    • - (g).
  • 78
    • 34250881942 scopus 로고    scopus 로고
    • 2=CHSeMe (pd) were performed similarly.
    • 2=CHSeMe (pd) were performed similarly.
  • 79
    • 34250798362 scopus 로고    scopus 로고
    • -1 at the MP2 level.
    • -1 at the MP2 level.
  • 80
    • 34250841566 scopus 로고    scopus 로고
    • -1, respectively, at the MP2 level.
    • -1, respectively, at the MP2 level.
  • 81
    • 34250890539 scopus 로고    scopus 로고
    • Table S1 in the Supporting Information collects the contributions from each ψ to σp(Se) and the components (σ p(Se)xx σp(Se)yy, and σp(Se)zz) in CH2=CHSeH (pl-A, CH 2=CHSeH (pl-B, CH2=CHSeH (pd, and CH3CH 2SeH (Cx, together with the energies (εi) and the characters of Ψi
    • i.
  • 82
    • 34250856109 scopus 로고    scopus 로고
    • p(Se) of these compounds, given in Table 9, are contributed from the atomic p. d, and f orbitals in the basis sets for the calculations.
    • p(Se) of these compounds, given in Table 9, are contributed from the atomic p. d, and f orbitals in the basis sets for the calculations.
  • 83
    • 34250883121 scopus 로고    scopus 로고
    • The Ψi→Ψj+a contributions from p, px+py+Pz in Table 9 were plotted versus those in Tables 2 and 6, which correspond the contributions from (p, d, f, for Se2- and R2Se (C2v, R, H, Me, Et, nPr, nBu, and CH2=CH, The correlation is given in Equation (10, σ(p, 0.976σp (p+d+f)-0.3 (n, 7, r, 1.000, 10) The correlation is obtained with more significant figures than those in the tables. The results show that atomic p orbitals in Ψi, are the origin of about 98% of σp(Se, a, 0.976) by the basis sets in the calculations
    • p(Se) (a = 0.976) by the basis sets in the calculations.


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