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Volumn 68, Issue 13, 2003, Pages 5186-5192

Assignment of the molecular absolute configuration through the ab initio Hartree-Fock calculation of the optical rotation: Can the circular dichroism data help in reducing basis set requirements?

Author keywords

[No Author keywords available]

Indexed keywords

AROMATIC COMPOUNDS; MOLECULES; ULTRAVIOLET RADIATION; UNSATURATED COMPOUNDS;

EID: 0037534152     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo026867s     Document Type: Article
Times cited : (49)

References (76)
  • 8
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    • Helgaker, T.; Ruud, K.; Bak, K. L.; Jorgensen, P.; Olsen, J. Faraday Discuss. 1994, 99, 165. It must be noticed that a similar method for the frequency-dependent optical activity tensor calculation, based on the dynamic response theory, was proposed by Lazzeretti and Zanasi: Lazzeretti, P.; Zanasi, R. Phys. Rev. A 1986, 33, 3727.
    • (1994) Faraday Discuss. , vol.99 , pp. 165
    • Helgaker, T.1    Ruud, K.2    Bak, K.L.3    Jorgensen, P.4    Olsen, J.5
  • 9
    • 0037694140 scopus 로고
    • Helgaker, T.; Ruud, K.; Bak, K. L.; Jorgensen, P.; Olsen, J. Faraday Discuss. 1994, 99, 165. It must be noticed that a similar method for the frequency-dependent optical activity tensor calculation, based on the dynamic response theory, was proposed by Lazzeretti and Zanasi: Lazzeretti, P.; Zanasi, R. Phys. Rev. A 1986, 33, 3727.
    • (1986) Phys. Rev. A , vol.33 , pp. 3727
    • Lazzeretti, P.1    Zanasi, R.2
  • 41
    • 0037028480 scopus 로고    scopus 로고
    • To the best of our knowledge, TURBOMOLE 5.6 (used by Grimme), GAUSSIAN 99 (used by Stephens), and the latest version of DALTON (where Kohn-Sham and coupled cluster methods for OR calculation have been implemented; see: Ruud, K.; Helgaker, T. Chem. Phys. Lett. 2002, 352, 533) will be available soon.
    • (2002) Chem. Phys. Lett. , vol.352 , pp. 533
    • Ruud, K.1    Helgaker, T.2
  • 52
    • 0038708603 scopus 로고
    • (a) One could argue that 7, being an acyclic molecule, is not rigid. Actually, the CD spectra recorded at room temperature and -100 °C are almost superimposable. This indicates high conformational homogeneity of this compound; see: Salvadori, P.; Lardicci, L.; Menicagli, R.; Bertucci, C. J. Am. Chem. Soc. 1972, 94, 8598. (b) Also in the case of 10 it has been shown that the conformer where the C*-H hydrogen points toward the peri-hydrogen of the naphthalene is the strongly prevailing one; see: Salvadori, P.; Piccolo, O.; Bertucci, C.; Menicagli, R.; Lardicci, L. J. Am. Chem, Soc. 1980, 102, 6860.
    • (1972) J. Am. Chem. Soc. , vol.94 , pp. 8598
    • Salvadori, P.1    Lardicci, L.2    Menicagli, R.3    Bertucci, C.4
  • 53
    • 0042112651 scopus 로고
    • (a) One could argue that 7, being an acyclic molecule, is not rigid. Actually, the CD spectra recorded at room temperature and -100 °C are almost superimposable. This indicates high conformational homogeneity of this compound; see: Salvadori, P.; Lardicci, L.; Menicagli, R.; Bertucci, C. J. Am. Chem. Soc. 1972, 94, 8598. (b) Also in the case of 10 it has been shown that the conformer where the C*-H hydrogen points toward the peri-hydrogen of the naphthalene is the strongly prevailing one; see: Salvadori, P.; Piccolo, O.; Bertucci, C.; Menicagli, R.; Lardicci, L. J. Am. Chem, Soc. 1980, 102, 6860.
    • (1980) J. Am. Chem. Soc. , vol.102 , pp. 6860
    • Salvadori, P.1    Piccolo, O.2    Bertucci, C.3    Menicagli, R.4    Lardicci, L.5
  • 54
    • 0037694138 scopus 로고    scopus 로고
    • note
    • As Stephens has clearly pointed out the OR magnitude is affected by several factors, in addition to solvent effects, such as experimental errors and vibrational effects. The importance of the vibrational effect has been recently pointed out.
  • 56
    • 0037694137 scopus 로고    scopus 로고
    • note
    • This choice is due to the fact that in this way we have a homogeneous comparison with analogous data reported in the literature. In addition it is interesting to note that the use of the B3LYP/6-31G* method requires in the case of 14, for instance, 17 h of CPU time on our machine, while HF/SCF/6-31G* requires 12 h and HF/SCF/3-21G requires 2 h. In any case all these times are shorter than the CPU time required for the HF/SCF/6-31G* OR calculation (23 h); therefore, the preparation of geometries is not the rate-determining step of the overall process. Interestingly, the computed HF/SCF/6-31G* optical rotations are similar in the three cases: -275 (B3LYP/6-31G*), -224 (HF/SCF/6-31G*), and -234 (HF/SCF/3-21G).
  • 58
    • 0001842492 scopus 로고
    • Gawronski, J. Tetrahedron 1982, 38, 3. A half-width of 40 nm was assumed for the n-π* band at 338 nm, considering spectra of analogous compounds reported in the same paper.
    • (1982) Tetrahedron , vol.38 , pp. 3
    • Gawronski, J.1
  • 63
    • 0342645150 scopus 로고
    • Theory and analysis of rotatory dispersion curves
    • Djerassi, C., Ed.; McGraw-Hill: New York; Chapter 12
    • The simple Kronig-Kramers transform formulas (eq 10) of Moscowitz have been used: Moscowitz, A. Theory and analysis of rotatory dispersion curves. In Optical Rotatory Dispersion: Application to Organic Chemistry; Djerassi, C., Ed.; McGraw-Hill: New York, 1960; Chapter 12.
    • (1960) Optical Rotatory Dispersion: Application to Organic Chemistry
    • Moscowitz, A.1
  • 65
    • 0038032064 scopus 로고    scopus 로고
    • note
    • Even though the use of a smaller nonpolarized basis set should not be recommended for this kind of calculation, according to a suggestion of a reviewer, we also carried out some HF/STO-3G and HF/3-21G OR calculations for selected compounds such as 1, 5, 7, and 11. The results obtained are as follows: (for 1) STO-3G, -123; 3-21G, -124; (for 5) STO-3G, -1745; 3-21G, -2934; (for 7) STO-3G, +0.1; 3-21G +28; (for 11) STO-3G, +33; 3-21G, +7. We can state that for compounds which fulfill our criterion a and showing very high rotatory power (say 200 units or more) a HF/3-21G or even STO-3G calculation will give the correct sign and order of magnitude of the OR, in a very short time (4 h for a large molecule such as 5). On the contrary, the same computation fails miserably when the experimental rotatory power is small (20 units or less) and/or optical rotation and the lowest energy Cotton effect have opposite signs (see 7 and 11).
  • 66
    • 0038370257 scopus 로고    scopus 로고
    • note
    • This problem deserves special interest: we are now carrying out an investigation about ketone OR calculations.
  • 67
    • 0025758733 scopus 로고
    • Endo, Y.; Ohta, T.; Nozoe, S. Tetrahedron Lett. 1991, 32, 3083. The assignment of absolute configuration is reported by Ohta et al.: Ohta, T.; Endo, Y.; Kikuchi, R.; Kabuto, C.; Harada, N.; Nozoe, S. Tetrahedron 1994, 50, 5659.
    • (1991) Tetrahedron Lett. , vol.32 , pp. 3083
    • Endo, Y.1    Ohta, T.2    Nozoe, S.3
  • 68
    • 0028236133 scopus 로고
    • Endo, Y.; Ohta, T.; Nozoe, S. Tetrahedron Lett. 1991, 32, 3083. The assignment of absolute configuration is reported by Ohta et al.: Ohta, T.; Endo, Y.; Kikuchi, R.; Kabuto, C.; Harada, N.; Nozoe, S. Tetrahedron 1994, 50, 5659.
    • (1994) Tetrahedron , vol.50 , pp. 5659
    • Ohta, T.1    Endo, Y.2    Kikuchi, R.3    Kabuto, C.4    Harada, N.5    Nozoe, S.6


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.