ORIENTATIONAL ORDER OF LIQUID-CRYSTALLINE 4-ALKYL-N-(P-CYANOPHENYL)PIPERIDINES BY H-2 AND C-13 NMR SPECTROSCOPIES

Authors
SHEIKHALI BM KHETRAPAL CL WEISS RG
Citation
Bm. Sheikhali et al., ORIENTATIONAL ORDER OF LIQUID-CRYSTALLINE 4-ALKYL-N-(P-CYANOPHENYL)PIPERIDINES BY H-2 AND C-13 NMR SPECTROSCOPIES, Journal of physical chemistry, 98(4), 1994, pp. 1213-1216
Citations number
28
Categorie Soggetti
Chemistry Physical
Journal title
Journal of physical chemistry → ACNP
ISSN journal
00223654
Volume
98
Issue
4
Year of publication
1994
Pages
1213 - 1216
Database
ISI
SICI code
0022-3654(1994)98:4<1213:OOOL4>2.0.ZU;2-B
Abstract
The orientational order of nematic 4-alkyl-N-(4-cyanophenyl) piperidin es (I) has been determined from H-2 and C-13 NMR spectra. Molecular-or der parameters are derived from the carbon-13 chemical shift of the cy ano carbon atom in the nematic and the isotropic phases; the sign of t he diamagnetic anisotropy is positive. Deuterium quadrupolar splitting s from the partially deuterated piperidine ring of I are then related to various C-D bonds.