Host-guest interaction in a thiourea-dimethyl ...
Type de document :
Article dans une revue scientifique: Article original
PMID :
URL permanente :
Titre :
Host-guest interaction in a thiourea-dimethyl oxalate (2/1) complex at 300 and 100 K
Auteur(s) :
Titre de la revue :
Acta Crystallogr. Sect. C-Cryst. Struct. Commun.
Nom court de la revue :
Acta Crystallogr. Sect. C-Cryst. Struct. Commun.
Pagination :
O547-O549
Date de publication :
2006-09
ISSN :
0108-2701
Discipline(s) HAL :
Chimie
Résumé en anglais : [en]
The title complex, 2CH4N2S·C4H6O4, is a host–guest system. The asymmetric unit consists of one complete thiourea molecule and one-half of a dimethyl oxalate molecule lying on an inversion centre. The host thiourea ...
Lire la suite >The title complex, 2CH4N2S·C4H6O4, is a host–guest system. The asymmetric unit consists of one complete thiourea molecule and one-half of a dimethyl oxalate molecule lying on an inversion centre. The host thiourea molecules are connected to form zigzag chains by N—H...S hydrogen bonds. The guest dimethyl oxalate molecules provide O-atom acceptors for N—H...O hydrogen bonds, thus interconnecting the chains of thiourea molecules to form completely connected sheets. The reduction in temperature from 300 to 100 K leaves the structure unchanged and still isostructural with that previously determined for the analogous thiourea–diethyl oxalate (2/1) complex. It does, however, induce closer packing of the molecules, general shrinkage of the unit cell and shortening of the hydrogen bonds, these last two to the extent of 1–2%.Lire moins >
Lire la suite >The title complex, 2CH4N2S·C4H6O4, is a host–guest system. The asymmetric unit consists of one complete thiourea molecule and one-half of a dimethyl oxalate molecule lying on an inversion centre. The host thiourea molecules are connected to form zigzag chains by N—H...S hydrogen bonds. The guest dimethyl oxalate molecules provide O-atom acceptors for N—H...O hydrogen bonds, thus interconnecting the chains of thiourea molecules to form completely connected sheets. The reduction in temperature from 300 to 100 K leaves the structure unchanged and still isostructural with that previously determined for the analogous thiourea–diethyl oxalate (2/1) complex. It does, however, induce closer packing of the molecules, general shrinkage of the unit cell and shortening of the hydrogen bonds, these last two to the extent of 1–2%.Lire moins >
Langue :
Anglais
Établissement(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Équipe(s) de recherche :
Matériaux inorganiques, structures, systèmes et propriétés (MISSP)
Date de dépôt :
2023-05-30T18:26:20Z