ANGLE OF TWIST BETWEEN THE 2 RINGS OF 4-CYANOBIPHENYL WHEN DISSOLVED IN LIQUID-CRYSTALLINE SOLVENTS

被引：20

作者：

EMSLEY, JW ^{[1
]}

HORNE, TJ ^{[1
]}

CELEBRE, G ^{[1
]}

DELUCA, G ^{[1
]}

LONGERI, M ^{[1
]}

机构：

[1] UNIV CALABRIA,DEPT CHEM,I-87036 RENDE,ITALY

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1992年 / 88卷 / 12期

关键词：

D O I：

10.1039/ft9928801679

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The structure of 4-cyanobiphenyl when dissolved in nematic liquid-crystalline solvents has been investigated. This has been achieved by recording and analysing the proton and deuterium NMR spectra of samples dissolved in the nematic solvents. The dipolar couplings obtained are compared with values calculated by averaging over the bond rotational motion, and the conclusion is reached that the minimum-energy structure has an angle between the two ring normals of 37.0 +/- 0.1-degrees in each of three solvents, compared with a value for biphenyl, obtained previously by the same method, of 37.4 +/- 0.2-degrees.

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页码：1679 / 1684

页数：6

相关论文

共 17 条

[1] INTERNAL-ROTATION OF BIPHENYL IN SOLUTION STUDIED BY IR AND NMR-SPECTRA [J].

AKIYAMA, M ;

WATANABE, T ;

KAKIHANA, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (09) :1752-1755

[2] STRUCTURE AND BARRIER OF INTERNAL-ROTATION OF BIPHENYL DERIVATIVES IN THE GASEOUS STATE .1. THE MOLECULAR-STRUCTURE AND NORMAL COORDINATE ANALYSIS OF NORMAL BIPHENYL AND PERDEUTERATED BIPHENYL [J].

ALMENNINGEN, A ;

BASTIANSEN, O ;

FERNHOLT, L ;

CYVIN, BN ;

CYVIN, SJ ;

SAMDAL, S .

JOURNAL OF MOLECULAR STRUCTURE, 1985, 128 (1-3) :59-76

[3] DEUTERIUM QUADRUPOLAR PARAMETERS FROM H-1 AND H-2 NMR-SPECTRA FOR PYRIDINE-D5, BENZONITRILE-D5 AND CHLOROBENZENE-D5 USING LIQUID-CRYSTAL SOLVENTS [J].

AMBROSETTI, R ;

CATALANO, D ;

FORTE, C ;

VERACINI, CA .

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 1986, 41 (1-2) :431-435

[4] AN INVESTIGATION OF THE POTENTIAL GOVERNING ROTATION ABOUT THE O-CH2 BOND IN 4-CHLOROETHOXYBENZENE BY COMPARING OBSERVED AND CALCULATED DIPOLAR COUPLINGS OBTAINED FOR A SAMPLE DISSOLVED IN A NEMATIC SOLVENT [J].

CELEBRE, G ;

LONGERI, M ;

EMSLEY, JW .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS II, 1988, 84 :1041-1052

[5] STRUCTURE OF BIPHENYL IN A NEMATIC LIQUID-CRYSTALLINE SOLVENT [J].

CELEBRE, G ;

DELUCA, G ;

LONGERI, M ;

CATALANO, D ;

VERACINI, CA ;

EMSLEY, JW .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (16) :2623-2627

[6] THE ANGLE OF TWIST BETWEEN THE 2 PHENYL RINGS IN THE NEMATIC LIQUID-CRYSTAL 4-NORMAL-PENTYL-4'-CYANOBIPHENYL [J].

CELEBRE, G ;

LONGERI, M ;

SICILIA, E ;

EMSLEY, JW .

LIQUID CRYSTALS, 1990, 7 (05) :731-737

[7] AN INTERNAL ORDER APPROACH TO THE INVESTIGATION OF INTRAMOLECULAR ROTATIONS IN LIQUID-CRYSTALS BY NMR - 3-PHENYL-THIOPHENE IN PCH AND PHASE-IV [J].

DIBARI, L ;

FORTE, C ;

VERACINI, CA ;

ZANNONI, C .

CHEMICAL PHYSICS LETTERS, 1988, 143 (03) :263-269

[8] THE R-ALPHA STRUCTURE OF BENZONITRILE, DETERMINED BY NMR OF THE ORIENTED MOLECULE [J].

DIEHL, P ;

AMREIN, J ;

VERACINI, CA .

ORGANIC MAGNETIC RESONANCE, 1982, 20 (04) :276-278

[9]

Diehl P., 1985, NMR LIQUID CRYSTALS

[10] A THEORY OF ORIENTATIONAL ORDERING IN UNIAXIAL LIQUID-CRYSTALS COMPOSED OF MOLECULES WITH ALKYL CHAINS [J].

EMSLEY, JW ;

LUCKHURST, GR ;

STOCKLEY, CP .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1982, 381 (1780) :117-138