Conformations of linear chains. Systematics and suggestions for nomenclature

被引:133
作者
Michl, J
West, R
机构
[1] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA
[2] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
关键词
D O I
10.1021/ar0001057
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
There are six categories of calculated favored dihedral angles in linear MnX2n+2 chains. The Prelog-Klyne nomenclature is not helpful for classifying them, and we propose the following labels and symbols: A, anti, reserved for torsional angles within a few degrees of 180 degrees; T, transoid, omega similar or equal to 165 degrees; D, deviant, omega similar or equal to 150 degrees; O, ortho, omega similar or equal to 90 degrees; G, gauche, omega similar or equal to 60 degrees; C, cisoid, omega similar or equal to 40 degrees. With the exception of C, all of these categories have been observed in alkanes, perfluoroalkanes, or oligosilanes.
引用
收藏
页码:821 / 823
页数:3
相关论文
共 37 条
  • [1] Anti, ortho, and gauche conformers of perfluoro-n-butane: Matrix-isolation IR spectra and calculations
    Albinsson, B
    Michl, J
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (09) : 3418 - 3429
  • [2] Conformers of n-Si5Me12:: A comparison of ab initio and molecular mechanics methods
    Albinsson, B
    Antic, D
    Neumann, F
    Michl, J
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 1999, 103 (14) : 2184 - 2196
  • [3] Conformers of saturated chains: Matrix isolation, structure, IR and UV spectra of n-Si(4)Me(10)
    Albinsson, B
    Teramae, H
    Downing, JW
    Michl, J
    [J]. CHEMISTRY-A EUROPEAN JOURNAL, 1996, 2 (05) : 529 - 538
  • [4] CONFORMATIONAL-ANALYSIS .108. CALCULATION OF STRUCTURES AND ENERGIES OF ALKANETHIOLS AND THIA-ALKANES BY MOLECULAR MECHANICS METHOD
    ALLINGER, NL
    HICKEY, MJ
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1975, 97 (18) : 5167 - 5177
  • [5] CONFORMATIONAL-ANALYSIS OF 1,1,2,2-TETRACYCLOHEXYLETHANE
    BAXTER, SG
    FRITZ, H
    HELLMANN, G
    KITSCHKE, B
    LINDNER, HJ
    MISLOW, K
    RUCHARDT, C
    WEINER, S
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1979, 101 (16) : 4493 - 4497
  • [6] Boyd RH, 1993, SCI POLYM MOL
  • [7] A detailed UV and Raman study of poly(n-butyl-n-hexylsilylene) phase transitions
    Bukalov, SS
    Leites, LA
    West, R
    Asuke, T
    [J]. MACROMOLECULES, 1996, 29 (03) : 907 - 912
  • [8] CHUNWACHIRASIRI W, 1999, MONATSH CHEM, V130, P175
  • [9] Calculation of the conformational dependence of valence and Rydberg states in n-tetrasilane
    Crespo, R
    Teramae, H
    Antic, D
    Michl, J
    [J]. CHEMICAL PHYSICS, 1999, 244 (2-3) : 203 - 214
  • [10] Eliel E.L., 1994, STEREOCHEMISTRY ORGA, P21