Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
STRUCTURE OF MOLECULES BY NMR-SPECTROSCOPY USING LIQUID-CRYSTAL SOLVENTS
Autore:
SURYAPRAKASH N;
Indirizzi:
INDIAN INST SCI,SOPHISTICATED INSTRUMENTS FAC BANGALORE 560012 KARNATAKA INDIA
Titolo Testata:
Concepts in magnetic resonance
fascicolo: 3, volume: 10, anno: 1998,
pagine: 167 - 192
SICI:
1043-7347(1998)10:3<167:SOMBNU>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTIPLE-QUANTUM SPECTRA; HIGH-RESOLUTION NMR; ORIENTED MOLECULES; MAGNETIC-FIELD; C-13 NMR; H-2 NMR; ANISOTROPIC ENVIRONMENTS; DIPOLAR COUPLINGS; COSY EXPERIMENT; CHEMICAL-SHIFT;
Keywords:
LIQUID CRYSTALS; DIRECTOR; NEMATIC PHASE; ORIENTED MOLECULES; ORDER PARAMETER; DIPOLAR COUPLINGS; COMPUTER PROGRAMS; ROOT MEAN SQUARE ERROR; INTERNUCLEAR DISTANCE; MOLECULAR STRUCTURE; VIBRATIONAL CORRECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
82
Recensione:
Indirizzi per estratti:
Citazione:
N. Suryaprakash, "STRUCTURE OF MOLECULES BY NMR-SPECTROSCOPY USING LIQUID-CRYSTAL SOLVENTS", Concepts in magnetic resonance, 10(3), 1998, pp. 167-192

Abstract

Nuclear magnetic resonance spectroscopy of molecules aligned in nematic liquid crystalline media provides information on the molecular structure and order parameters. The partial alignment of the molecules in the liquid crystalline phases gives rise to residual intramolecular dipolar couplings which are dependent on internuclear distances, and therefore yield information on the structure of molecules. The dipolar couplings are in general large compared to chemical shifts, and the spectra become rapidly complex with the increase in the number of interacting spins and decrease of symmetry of molecules. In this article, the procedure for the analyses of such spectra is outlined in a pedagogical manner. The concept of the order parameter is illustrated in a phenomenological way. The utility of the technique and obtainable information is demonstrated using practical examples. (C) 1998 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 12:53:45