Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Further insight into three center hydrogen bonding. Participation in tautomeric equilibria of heterocyclic amides
Autore:
Padilla-Martinez, II; Martinez-Martinez, FJ; Garcia-Baez, EV; Torres-Valencia, JM; Rojas-Lima, S; Hopfl, H;
Indirizzi:
IPN, Dept Quim, Unidad Profes Interdisciplinaria Biotecnol, Mexico City 07340, DF, Mexico IPN Mexico City DF Mexico 07340 Biotecnol, Mexico City 07340, DF, Mexico Univ Autonoma Estado Hidalgo, Ctr Invest Quim, Unidad Univ Pachuca Hidalgo, Mexico City, DF, Mexico Univ Autonoma Estado Hidalgo Mexico City DF Mexico xico City, DF, Mexico Univ Autonoma Estado Morelos, Ctr Invest Quim, Cuernavaca, Morelos, MexicoUniv Autonoma Estado Morelos Cuernavaca Morelos Mexico , Morelos, Mexico
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
fascicolo: 9, , anno: 2001,
pagine: 1817 - 1823
SICI:
1472-779X(200109):9<1817:FIITCH>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
THERMODYNAMIC CHARACTERIZATION; CRYSTALLOGRAPHIC EVIDENCE; OXAMIDE DERIVATIVES; MAGNETIC-RESONANCE; BONDED COMPLEXES; MODEL SYSTEM; NMR; C-13; N-15; H2O;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Padilla-Martinez, II IPN, Dept Quim, Unidad Profes Interdisciplinaria Biotecnol, Av Acueducto S-N Barrio Laguna Ticoman, Mexico City 07340, DF, Mexico IPN Av Acueducto S-N Barrio Laguna Ticoman Mexico City DF Mexico 07340
Citazione:
I.I. Padilla-Martinez et al., "Further insight into three center hydrogen bonding. Participation in tautomeric equilibria of heterocyclic amides", J CHEM S P2, (9), 2001, pp. 1817-1823

Abstract

In this work the synthesis and characterization in solution and solid state of three heterocyclic ox-amides acid four amides capable of forming threecenter hydrogen bond (THB) interactions is described. The formation of THBs in solution was established and studied by multinuclear and VT H-1 magnetic resonance, by which the Delta delta/DeltaT values could be directly related with proton mobility. The molecular structure of two oxamides in the solid state was determined by X-ray diffraction experiments: The results showed that amides with S(n)S(5)S(6) (n = 5; 6 -for -OMe and -NO2 respectively)motifs were less prone to establish tautomeric equilibria in solution thanthose with the simpler S(n)S(5) motif.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 00:50:57