Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Determination of molecular geometry by high-order multiple-quantum evolution in solid-state NMR
Autore:
Eden, M; Brinkmann, A; Luthman, H; Eriksson, L; Levitt, MH;
Indirizzi:
Stockholm Univ, Div Phys Chem, Arrhenius Lab, S-10691 Stockholm, Sweden Stockholm Univ Stockholm Sweden S-10691 s Lab, S-10691 Stockholm, Sweden Stockholm Univ, Div Struct Chem, Arrhenius Lab, S-10691 Stockholm, Sweden Stockholm Univ Stockholm Sweden S-10691 s Lab, S-10691 Stockholm, Sweden
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE
fascicolo: 2, volume: 144, anno: 2000,
pagine: 266 - 279
SICI:
1090-7807(200006)144:2<266:DOMGBH>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEAR-MAGNETIC-RESONANCE; ANGLE-SPINNING NMR; HIGH-RESOLUTION NMR; ROTATING SOLIDS; TORSIONAL ANGLE; PULSE SEQUENCE; SPECTROSCOPY; EXCITATION; HOMONUCLEAR; COHERENCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Levitt, MH Stockholm Univ, Div Phys Chem, Arrhenius Lab, S-10691 Stockholm, Sweden Stockholm Univ Stockholm Sweden S-10691 691 Stockholm, Sweden
Citazione:
M. Eden et al., "Determination of molecular geometry by high-order multiple-quantum evolution in solid-state NMR", J MAGN RES, 144(2), 2000, pp. 266-279

Abstract

The principles of molecular geometry determination by high-quantum heteronuclear local field spectroscopy in solid-state NMR are discussed. The extreme multiple-quantum coherences in a cluster of nuclear spins are allowed toevolve in the presence of heteronuclear through-space couplings to two spins of a different type, The multiple-quantum dephasing curve is independentof the homonuclear spin-spin couplings and may be described in terms of geometric parameters. The triple-quantum version of the experiment is demonstrated by determining the psi torsion angle in a [N-15(2), C-13(3)]-labeled sample of the peptide ala-ala-gly. Two regions of torsion angle space fit the experimental data, one in the neighborhood of -152 degrees and one in the neighborhood of +161 degrees. The latter determination is in excellent agreement with the X-ray estimate of +160.5 degrees. (C) 2000 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 20:35:56