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Volumn 2, Issue 2, 2002, Pages 262-270

Structural studies on diaryl selenide dihalides in solution: Molecular complex formation of substituted diphenyl selenides with bromine

Author keywords

[No Author keywords available]

Indexed keywords

ATOMS; BROMINE; COMPLEXATION; CONFORMATIONS; CRYSTAL SYMMETRY; ELECTRONIC STRUCTURE; HALOGEN COMPOUNDS; MOLECULAR STRUCTURE; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; OXIDATION;

EID: 0036007684     PISSN: 03009580     EISSN: None     Source Type: Journal    
DOI: 10.1039/b108556e     Document Type: Article
Times cited : (14)

References (39)
  • 13
    • 85034316789 scopus 로고    scopus 로고
    • The electronegativity proposed by Allred–Rochow was employed to discuss the structure of the adducts. See
    • The electronegativity proposed by Allred–Rochow was employed to discuss the structure of the adducts. See.
  • 16
    • 84986550210 scopus 로고
    • Quantitative Models of Steric Effects
    • R. W. Taft Interscience, New York
    • S. H. Unger and C. Hansch. Quantitative Models of Steric Effects, in Progress in Physical Organic Chemistry, ed. R. W. Taft Interscience, New York 1976, vol. 12.
    • (1976) Progress in Physical Organic Chemistry , vol.12
    • Unger, S.H.1    Hansch, C.2
  • 19
    • 85034361572 scopus 로고    scopus 로고
    • The criteria are summarized as follows. (1) Large downfield shifts of ipso- and para-carbons of aryl groups are observed in TB formation relative to those of the parent selenides: the former depends on the electronegativity of the halogens whereas the latter is almost independent of them. (2) The signal of para-carbon shifts downfield whereas the ipso-carbon shifts upfield in the formation of MC: the shift values are often small but the values must be moderate if the equilibrium between the MC and its components are taken into account. (3) Very large downfield shifts are observed for 77Se NMR signals in TB formation, whereas the values were small in the formation of MC. (4) Large downfield shifts of ortho-protons in TB formation are also useful
    • The criteria are summarized as follows. (1) Large downfield shifts of ipso- and para-carbons of aryl groups are observed in TB formation relative to those of the parent selenides: the former depends on the electronegativity of the halogens whereas the latter is almost independent of them. (2) The signal of para-carbon shifts downfield whereas the ipso-carbon shifts upfield in the formation of MC: the shift values are often small but the values must be moderate if the equilibrium between the MC and its components are taken into account. (3) Very large downfield shifts are observed for 77Se NMR signals in TB formation, whereas the values were small in the formation of MC. (4) Large downfield shifts of ortho-protons in TB formation are also useful.
  • 22
    • 84986617286 scopus 로고
    • The Nature and Analysis of Substituent Electronic Effects
    • R. W. Taft Interscience, New York see also other chapters therein
    • R. D. Topsom The Nature and Analysis of Substituent Electronic Effects, in Progress in Physical Organic Chemistry, ed. R. W. Taft Interscience, New York 1976, vol. 12, see also other chapters therein.
    • (1976) Progress in Physical Organic Chemistry , vol.12
    • Topsom, R.D.1
  • 23
    • 85034367640 scopus 로고    scopus 로고
    • The electrochemical oxidation of (4-YC6H4)2Z (Z = Se, Te) and 4-YC6H4ZMe (Z = S, Se, Te) were studied in connection with Hammett’s postulate. See
    • The electrochemical oxidation of (4-YC6H4)2Z (Z = Se, Te) and 4-YC6H4ZMe (Z = S, Se, Te) were studied in connection with Hammett’s postulate. See.
  • 33
    • 85034315279 scopus 로고    scopus 로고
    • The Eox values measured in this work are well correlated with those reported in ref. 8 (Eox′). Eox = 1.096 × Eox′ + 0.349 (r = 0.981)
    • The Eox values measured in this work are well correlated with those reported in ref. 8 (Eox′). Eox= 1.096 × Eox′ + 0.349 (r= 0.981).
  • 34
    • 85034374530 scopus 로고    scopus 로고
    • This would be better explained if the MC adducts are widely optimized. However, this could not be achieved since the calculations with MC adducts of 4 10 13 were terminated due to convergence failure in the SCF
    • This would be better explained if the MC adducts are widely optimized. However, this could not be achieved since the calculations with MC adducts of 4, 10 and 13 were terminated due to convergence failure in the SCF.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.