Search results for "Formamide"
showing 10 items of 308 documents
CCDC 784414: Experimental Crystal Structure Determination
2011
Related Article: J.Ferrando-Soria, E.Pardo, R.Ruiz-Garcia, J.Cano, F.Lloret, M.Julve, Y.Journaux, J.Pasan, C.Ruiz-Perez|2011|Chem.-Eur.J.|17|2176|doi:10.1002/chem.201002110
CCDC 1445294: Experimental Crystal Structure Determination
2016
Related Article: Francisco Fernandez-Palacio, Marco Saccone, Arri Priimagi, Giancarlo Terraneo, Tullio Pilati, Pierangelo Metrangolo, Giuseppe Resnati|2016|CrystEngComm|18|2251|doi:10.1039/C6CE00059B
CCDC 1916086: Experimental Crystal Structure Determination
2019
Related Article: María Cabrero-Antonino, Sonia Remiro-Buenamañana, Manuel Souto, Antonio A. García-Valdivia, Duane Choquesillo-Lazarte, Sergio Navalón, Antonio Rodríguez-Diéguez, Guillermo Mínguez Espallargas, Hermenegildo García|2019|Chem.Commun.|55|10932|doi:10.1039/C9CC04446A
CCDC 1916083: Experimental Crystal Structure Determination
2019
Related Article: María Cabrero-Antonino, Sonia Remiro-Buenamañana, Manuel Souto, Antonio A. García-Valdivia, Duane Choquesillo-Lazarte, Sergio Navalón, Antonio Rodríguez-Diéguez, Guillermo Mínguez Espallargas, Hermenegildo García|2019|Chem.Commun.|55|10932|doi:10.1039/C9CC04446A
CCDC 2217201: Experimental Crystal Structure Determination
2023
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C
Restricted and complete-active-space multiconfiguration linear response calculations of the polarizability of formamide and urea
1991
Abstract Using the polarized basis sets of Sadlej, we have carried out multiconfiguration linear response (MCLR) calculations of static and dynamic polarizabilities of water, carbon dioxide, formamide and urea. It is found that the polarized basis sets give a good description of the polarizabilities. The uncorrelates (self-consistent field) polarizabilities are in general 10% or more lower than the experimental values. The correlation as introduced in the complete-active-space (CAS) and restricted-active-space (RAS) MCLR calculations recovers the major part of this deviation.
Fast proton conduction in hydrogen bonded microheterogeneous systems: Bis(2-ethylhexyl)phosphoric acid/N-methyl formamide liquid mixtures
2009
Structural and dynamical properties of bis(2-ethylhexyl)phosphoric acid (HDEHP)/N-methyl formamide (NMF) liquid mixtures in the whole composition range have been investigated by Fourier Transform Infrared spectroscopy (FT-IR), X-rays Diffraction (XRD), and AC complex impedance spectroscopy. Driven by hydrogen bond interactions among HDEHP PO(4)H group and NMF CO and NH groups, and also by steric effects among the HDEHP alkyl chains, the system microstructure is mainly characterized by the coexistence of spatially separated hydrophilic and hydrophobic nanodomains showing local organization and short-range order. The evolution of this structural feature with system composition has been highli…
Interpolymer complexes and polymer compatibility.
2012
A reliable method to decide whether two polymers A and B are miscible or incompatible would be very helpful in many ways. In this contribution we demonstrate why traditional procedures cannot work. We propose to use the intrinsic viscosities [η] of the polymer blends instead of the composition dependence of the viscosities as a criterion for polymer miscibility. Two macromolecules A and B are miscible because of sufficiently favorable interactions between the two types of polymer segments. For solutions of these polymers in a joint solvent, this Gibbs energetic preference of dissimilar intersegmental contacts should prevail upon dilution and lead to the formation of interpolymer complexes, …
7-Amino-2-methylsulfanyl-1,2,4-triazolo[1,5-a]pyrimidine-6-carboxylic acid as the dimethylformamide and water monosolvates at 293 K.
2010
The molecular structure of 7-amino-2-methylsulfanyl-1,2,4-triazolo[1,5-a]pyrimidine-6-carboxylic acid is reported in two crystal environments, viz. as the dimethylformamide (DMF) monosolvate, C(7)H(7)N(5)O(2)S·C(3)H(7)NO, (I), and as the monohydrate, C(7)H(7)N(5)O(2)S·H(2)O, (II), both at 293 (2) K. The triazolo[1,5-a]pyrimidine molecule is of interest with respect to the possible biological activity of its coordination compounds. While the DMF solvate exhibits a layered structural arrangement through N...O hydrogen-bonding interactions, the monohydrate displays a network of intermolecular O...O and N...O hydrogen bonds assisted by cocrystallized water molecules and weak π-π stacking intera…
Viscometric study on the compatibility of polymer–polymer mixtures in solution
1999
Abstract The viscosity behaviour of mixtures formed by two uncharged polymers in dilute solution has been studied at 25°C. The ternary systems assayed, and denoted solvent (1)/ polymer (2)/ polymer (3), have in common the poly(ether sulphone) (PES) as polymer 2, and poly(vinylidene fluoride) (PVDF), poly(methyl methacrylate) (PMMA) or poly(styrene) (PS) as polymer 3. The intrinsic viscosity and the viscometric interaction parameters have been experimentally measured for the binary (solvent/polymer) as well as for the ternary systems, and also theoretically evaluated for the latter. The estimation of the compatibility degree of the above polymer pairs have been done by means of three criteri…