Exploració per autor "Barrio Casado, María del"
Ara es mostren els items 12-31 de 107
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C60 solvate with (1,1,2)-trichloroethane: dynamic statistical disorder and mixed conformation
(2016-05-27)
Article
Accés obertWe present a full characterization of the orientationally disordered cocrystal of C-60 with (1,1,2)-triChloroethane (C2H3Cl3), by means of X-ray diffraction, Raman spectroscopy, and broadband dielectric spectroscopy. Our ... -
Colossal barocaloric effects in adamantane derivatives for thermal management
(American Institute of Physics (AIP), 2022-11-16)
Article
Accés obertPlastic crystals are currently attracting interest because their solid-state caloric functionality could be used to tackle climate change in two critical areas: (i) more environmentally friendly cooling and heating driven ... -
Colossal barocaloric effects near room temperature in plastic crystals of neopentylglycol
(2019-04-18)
Article
Accés obertThere is currently great interest in replacing the harmful volatile hydrofluorocarbon fluids used in refrigeration and air-conditioning with solid materials that display magnetocaloric, electrocaloric or mechanocaloric ... -
Colossal reversible barocaloric effects in layered hybrid perovskite (C10H21NH3)2MnCl4 under low pressure near room temperature
(2021-11-10)
Article
Accés obertBarocaloric effects in a layered hybrid organic–inorganic compound, (C10H21NH3)2MnCl4, that are reversible and colossal under pressure changes below 0.1 GPa are reported. This barocaloric performance originates in a phase ... -
Comparative physical study of three pharmaceutically active benzodiazepine derivatives: crystalline versus amorphous state and crystallization tendency
(American Chemical Society, 2021-01-01)
Article
Accés obertChemical derivatization and amorphization are two possible strategies to improve the solubility and bioavailability of drugs, which is a key issue for the pharmaceutical industry. In this contribution, we explore whether ... -
Conformational polymorphism: The missing phase of 1,1,2,2-tetrachloroethane (Cl2HC-CHCl2)
(2013-05)
Article
Accés restringit per política de l'editorialHalogenoethane derivatives are known to exhibit different polymorphs involving a different translational, orientational, and conformational order. The 1,1,2,2- tetrachloroethane (Cl2HC−CHCl2) exhibits a normal pressure ... -
Crystal structure and solid-state properties of 3,4-diaminopyridine dihydrogen phosphate and their comparison with other diaminopyridine salts
(2013-02)
Article
Accés restringit per política de l'editorial3,4-Diaminopyridine is an active pharmaceutical ingredient for the treatment of Lambert−Eaton myasthenic syndrome (LEMS). It is 3,4-diaminopyridine dihydrogen phosphate that has become the active ingredient of choice. As ... -
Crystal structure and solid-state studies of aged samples of tienoxolol, an API designed against hypertension
(2012)
Article
Accés restringit per política de l'editorialAging of drug molecules is generally studied following regulatory procedures, i.e. under forced conditions and for relatively limited storage time; therefore naturally aged samples are rare and provide scientific reference ... -
Crystal structure of polymorph II and the pressure-temperature phase diagram of the dimorphic anesthetic butamben
(American Chemical Society, 2021-11-18)
Article
Accés obertThe crystal structure of the low-temperature form II of butamben has been solved in a P21/c space group very similar to that of form I. Form II possesses virtually the same packing as that of the high-temperature form I, ... -
Crystal structures and phase relationships of 2 polymorphs of 1,4-Diazabicyclo[3.2.2]nonane-4-Carboxylic Acid 4-Bromophenyl Ester Fumarate, A selective a-7 nicotinic receptor partial agonist
(2016-01)
Article
Accés obertTwo polymorphs of the 1:1 fumarate salt of 1,4-diazabicyclo[3.2.2]nonane-4-carboxylic acid 4-bromophenyl ester, developed for the treatment of cognitive symptoms of schizophrenia and Alzheimer disease, have been characterized. ... -
Crystalline tetrazepam as a case study on the volume change on melting of molecular organic compounds
(2021-01-25)
Article
Accés obertThe volume change on melting is a rarely studied quantity and it is not well understood even if it must reflect the changes in interaction between the solid and the liquid state. It is part of the solid-state information ... -
Curs 0: preparació per als estudis a l’EEBE
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2022-05)
Article
Accés obertAquest article presenta el desenvolupament i primers resultats d'ús d'un conjunt de cursos virtuals que pretenen proporcionar uns coneixements inicials bàsics de Matemàtiques, Física i !ímica als estudiants que accedeixen ... -
Disentangling the secondary relaxations in the orientationally disordered mixed crystals: cycloheptanol + cyclooctanol two-component system
(2010-04-20)
Article
Accés restringit per política de l'editorialThe dynamics of the pure compounds and mixed crystals formed between cycloheptanol (cC7-ol) and cyclooctanol (cC8-ol) has been studied by means of broadband dielectric spectroscopy at temperatures near and above the ... -
Does the trihydrate of atorvastatin calcium possess a melting point?
(2020-05-30)
Article
Accés obertTo decide whether an active pharmaceutical ingredient can be used in its amorphous form in drug formulations, often the glass transition is studied in relation to the melting point of the pharmaceutical. If the glass ... -
Double primary relaxation in a highly anisotropic orientational glass-former with low-dimensional disorder
(2016-04-26)
Article
Accés obertThe freezing of the cooperative reorientational motions in orientationally disordered (OD) molecular crystals marks the so-called \glassy" transition, which may be considered a lower-dimensional version of the structural ... -
Dynamics of orientationally disordered mixed crystal sharing Cl-adamantane and CN-adamantane
(2010-01-27)
Article
Accés restringit per política de l'editorialOrientationally disordered (OD) mixed crystals formed between cyanoadamantane (CN-A) and chloroadamantane (Cl-A) have been thermodynamically characterized by means of thermal analysis and X-ray diffraction. The dynamics ... -
Emergence of glassy-like dynamics in an orientationally ordered phase
(2012-04-04)
Article
Accés obertThe dynamics of a simple rigid pseudoglobular molecule (2-adamantanone) has been studied by means of dielectric spectroscopy and examined under the constraints imposed by the space group of the crystal structure determined ... -
Enantiomer resolution by pressure increase: inferences from experimental and topological results for the binary enantiomer system (R)- and (S)-mandelic acid
(2011-11-02)
Article
Accés restringit per política de l'editorialIn pharmacy, racemic compounds are often problematic, because generally only one of the enantiomers possesses therapeutic activity and it is often difficult to separate them. Even though this problem is likely as old ... -
Experimental and topological determination of the pressure-temperature phase diagram of morniflumate, a pharmaceutical ingredient with anti-inflammatory properties
(2017-09-01)
Article
Accés obertThe pressure-temperature phase diagram of morniflumate (niflumic acid ß-morpholinoethyl ester) has been obtained by high-pressure thermal analysis. In addition, calorimetric melting data (TI¿L = (348.1 ± 0.4) K and ¿HI¿L ... -
Experimental and topological determination of the pressure-temperature phase diagram of racemic etifoxine, a pharmaceutical ingredient with anxiolytic properties
(2019-12-18)
Article
Accés obertInformation about the solid-state properties of etifoxine has been lacking, even if the active pharmaceutical ingredient has been used for its anxiolytic properties for decennia. The crystal structure of the racemic compound ...
