Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Vibrational spectroscopic study of DL-methionine dihydrogen phosphate
Autore:
Rajkumar, BJM; Ramakrishnan, V;
Indirizzi:
Lady Doak Coll, Dept Phys, Madurai 625002, Tamil Nadu, India Lady Doak Coll Madurai Tamil Nadu India 625002 625002, Tamil Nadu, India
Titolo Testata:
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
fascicolo: 2, volume: 57, anno: 2001,
pagine: 247 - 254
SICI:
1386-1425(200102)57:2<247:VSSODD>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAMAN-SPECTRA; AMINO-ACIDS; ALPHA-GLYCINE; ALANINE; CYSTEINE; SERINE;
Keywords:
DL-methionine dihydrogen phosphate; intermolecular hydrogen bonding; group frequencies; fermi resonance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Rajkumar, BJM Madurai Kamaraj Univ, Sch Phys, Microproc & Comp Dept, LaserLab, Madurai 625021, Tamil Nadu, India Madurai Kamaraj Univ Madurai TamilNadu India 625021 India
Citazione:
B.J.M. Rajkumar e V. Ramakrishnan, "Vibrational spectroscopic study of DL-methionine dihydrogen phosphate", SPECT ACT A, 57(2), 2001, pp. 247-254

Abstract

The two methionine cations in the asymmetric part of the unit cell of bis(DL-methionine dihydrogen phosphate) have different conformations. This, together with the different environments seen by the two -CH2- groups in each skeleton cause several of the group wavenumbers to occur as doublets or as broad bands. The anion contains two dissimilar P-O bonds, which distorts the phosphate tetrahedron. Due to this, the stretching wavenumbers appear as doublets. There is extensive hydrogen bonding in the system in all three crystallographic directions and this is responsible for the changes in the position and intensity of several bands. Fermi resonance has also been observed. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/08/20 alle ore 14:32:45