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Listar por palabra clave "Crystal structure"

Mostrando ítems 1-18 de 18

Asymmetric propagation using enhanced self-demodulation in a chirped phononic crystal

Cebrecos, Alejandro; Jimenez, Noe; Romero García, Vicente; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M. (AIP Publishing, 2016-12)

Asymmetric propagation of acoustic waves is theoretically reported in a chirped phononic crystal made of the combination of two different nonlinear solids. The dispersion of the system is spatially dependent and allows the ...
Catalytic activity of unsupported gold nanoparticles

Mikami, Yusuke; Dhakshinamoorthy, Amarajothi; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (Royal Society of Chemistry, 2013)

[EN] This article reviews some of the compelling evidence showing that colloidal gold nanoparticles without any solid support exhibit intrinsic catalytic activity for some of the typical gold-catalyzed reactions including ...
Crystal structure of 4-{2-[4-(dimethylamino)phenyl]diazen-1-yl}-1-methylpyridinium iodide

Chulvi, K.; Costero Nieto, Ana María; Ochando Gómez, Luis Enrique; Gabiña, Pablo (International Union of Crystallography, 2015)

The molecular geometry of the ionic title compound, C14H17N4 + I or DAZOP+ I , is essentially featureless. Regarding the crystal structure, in addition to the obvious cation–anion Coulombic interactions, the packing ...
Crystal structure of HgGa2Se4 under compression

Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Manjón, F.J.; Santamaría Pérez, David; Errandonea, Daniel; Pérez González, Eduardo; López Solano, Javier; Rodríguez Hernández, Plácida; Muñoz, Alfonso; Tiginyanu, Ion Mijail; Ursaki, Veaceslav Vladimir (Elsevier, 2013)

We report on high-pressure x-ray diffraction measurements up to 17.2 GPa in mercury digallium selenide (HgGa2Se4). The equation of state and the axial compressibilities for the low-pressure tetragonal phase have been ...
Crystal structure of the coordination polymer [FeIII2{PtII(CN)4}3]

Muñoz Roca, María del Carmen (International Union of Crystallography, 2014-11)

[EN] The title complex, poly[dodeca--cyanido-diiron(III)triplatinum(II)], [FeIII2{PtII(CN)4}3], has a three-dimensional polymeric structure. It is built-up from square-planar [PtII(CN)4] 2 anions (point group symmetry 2/m) ...
Exploring the crystal structure and properties of ytterbium orthoantimonate under high pressure

Garg, A.B.; López Moreno, Sinhué; P. Botella; Gomis, O.; Bandiello, Enrico; Osman, H.; Popescu, Catalin; Errandonea, Daniel (The Royal Society of Chemistry, 2023-09-27)

[EN] The crystal structure of YbSbO4 was determined from powder X-ray diffraction data using the Rietveld method. The effect of pressure on the crystal structure was also studied and the P-V equation of state determined.
High-pressure Raman scattering study of defect chalcopyrite and defect stannite ZnGa2Se4

Vilaplana Cerda, Rosario Isabel; Gomis Hilario, Oscar; Pérez-González, E.; Ortiz, H. M.; Manjón Herrera, Francisco Javier; Rodríguez-Hernández, P.; Muñoz, Alfonso; Alonso Gutiérrez, P.; Sanjuán, M.L.; Ursaki, Veacheslav; Tiginyanu, Ivan (American Institute of Physics (AIP), 2013-06-17)

High-pressure Raman scattering measurements have been carried out in ZnGa2Se4 for both tetragonal defect chalcopyrite and defect stannite structures. Experimental results have been compared with theoretical lattice dynamics ...
High-pressure study of the structural and elastic properties of defect-chalcopyrite HgGa2Se4

Gomis Hilario, Oscar; Vilaplana Cerda, Rosario Isabel; Manjón Herrera, Francisco Javier; Santamaría-Pérez, D.; Errandonea, D.; Pérez-González, E.; López-Solano, J.; Rodríguez-Hernández, P.; Muñoz, Alfonso; Tiginyanu, Ivan; Ursaki, Veacheslav (American Institute of Physics (AIP), 2013-02-20)

In this work, we focus on the study of the structural and elastic properties of mercury digallium selenide (HgGa2Se4) which belongs to the family of AB 2 X 4 ordered-vacancy compounds with tetragonal defect chalcopyrite ...
Influence of Deposition Potential on Structure of ZnO Nanowires Synthesized in Track-Etched Membranes

Pruna, Alina Iuliana; Pullini, Daniele; Busquets Mataix, David Jerónimo (Electrochemical Society, 2012)

Single-crystal ZnO nanowires long up to several microns were fabricated by one-step electrochemical deposition. A template-based process employing track-etched polycarbonate (TE-PC) membranes was used for this purpose. The ...
Modulation of ABA signaling in vivo by an engineered receptor-insensitive PP2C allele

Dupeux, Florine; Antoni Alandes, Regina; Betz, Katja; Santiago, Julia; González Guzmán, Miguel; Rodriguez, Lesia; Rubio, Silvia; Park, Sang-Youl; Cutler, Sean R.; Rodríguez Egea, Pedro Luís; Marquez, Jose A. (American Society of Plant Biologists, 2011-05)

[EN] The plant hormone abscisic acid (ABA) plays a crucial role in the control of the stress response and the regulation of plant growth and development. ABA binding to PYRABACTIN RESISTANCE1 (PYR1)/PYR1-LIKE (PYL)/REGULATORY ...
New high-pressure phase and equation of state of Ce2Zr2O8

Errandonea, Daniel; Kumar, R.S.; Achary, S.N.; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Shukla, R.; Tyagi, A.K. (American Institute of Physics (AIP), 2012-03-08)

In this paper we report a new high-pressure rhombohedral phase of Ce2Zr2O8 observed in high-pressure angle-dispersive x-ray diffraction and Raman spectroscopy studies up to nearly 12 GPa. The ambient-pressure cubic phase ...
Pressure Impact on the Stability and Distortion of the Crystal Structure of CeScO3

Errandonea, Daniel; Santamaria-Perez, David; Martinez-Garcia, Domingo; Gomis, O.; Shukla, Rakesh; Achary, S. Nagabhusan; Tyagi, Avesh K.; Popescu, Catalin (American Chemical Society, 2017)

[EN] The effects of high pressure on the crystal structure of orthorhombic (Pnma) perovskite-type cerium scandate were studied in situ under high pressure by means of synchrotron X-ray powder diffraction, using a ...
Sensitive and selective chromogenic sensing of carbon monoxide via reversible axial CO coordination in binuclear rhodium complexes

Moragues Pons, María Esperanza; Esteban Moreno, Julio; Ros-Lis, José Vicente; Martínez Mañez, Ramón; Marcos Martínez, María Dolores; Martínez, Manuel; Soto Camino, Juan; Sancenón Galarza, Félix (American Chemical Society, 2011-10)

The study of probes for CO sensing of a family of binuclear rhodium(II) compounds of general formula [Rh 2{(XC 6H 3)P(XC 6H 4)} n(O 2CR) 4-n]·L 2 containing one or two metalated phosphines (in a head-to-tail arrangement) ...
Solvatochromic and Single Crystal Studies of Two Neutral Triarylmethane Dyes with a Quinone Methide Structure

Chulvi, Katherine; Costero Nieto, Ana María; OCHANDO GOMEZ, LUIS-ENRIQUE; Gil Grau, Salvador; Vivancos, José-Luis; Gavina, Pablo (MDPI, 2015-11)

The crystal structure of two neutral triarylmethane dyes with a p-quinone methide core was determined by X-ray diffraction analysis. The spectroscopic characteristics of both compounds in 23 solvents with different polarities ...
Structural and Lattice-Dynamical Properties of Tb2O3 under Compression: A Comparative Study with Rare Earth and Related Sesquioxides

IBAÑEZ, JORDI; Sans-Tresserras, Juan Ángel; Cuenca-Gotor, Vanesa Paula; OLIVA, R.; Gomis, O.; Rodríguez-Hernández, Plácida; MUÑOZ, A.; Rodriguez-Mendoza, U.R.; Velazquez, M.; Veber, P.; Popescu, Catalin; Manjón, Francisco-Javier (American Chemical Society, 2020-07-20)

[EN] We report a joint experimental and theoretical investigation of the high pressure structural and vibrational properties of terbium sesquioxide (Tb2O3). Powder X-ray diffraction and Raman scattering measurements show ...
Structural and vibrational behavior of cubic Cu1.80(3)Se cuprous selenide, berzelianite, under compression

Chulia-Jordan, R.; Santamaria-Perez, D.; Pereira, A. L. J.; Garcia-Domene, B.; Vilaplana Cerda, Rosario Isabel; Sans-Tresserras, Juan Ángel; Martinez-Garcia, D.; Morales-Garcia, A.; Popescu, C.; Muehle, C.; Jansen, M.; Manjón, Francisco-Javier (Elsevier, 2020-07-25)

[EN] We have performed an experimental study of the crystal structure and lattice dynamics of cubic Cu1.80(3)Se at ambient temperature and high pressures. Two reversible phase transitions were found at 2.9 and 8.7 GPa. The ...
Symmetry Breaking in Iron(II) Spin-Crossover Molecular Crystals

Ortega-Villar, Norma; Muñoz Roca, María del Carmen; Real, José A. (MDPI, 2016-03)

[EN] This review provides an up to date survey of a singular class of iron(II) spin crossover (SCO) molecular materials that undergo high-spin (HS) Ø low-spin (LS) phase transitions accompanied by crystallographic symmetry ...
X-ray diffraction study on pressure-induced phase transformations and the equation of state of ZnGa2Te4

Errandonea, Daniel; Kumar, R.S.; Gomis Hilario, Oscar; Manjón Herrera, Francisco Javier; Ursaki, Veacheslav; Tiginyanu, Ivan (American Institute of Physics (AIP), 2013-12-18)

We report on high-pressure x-ray diffraction measurements up to 19.8¿GPa in zinc digallium telluride (ZnGa2Te4) at room temperature. An irreversible structural phase transition takes place at pressures above 12.1¿GPa and ...