Results 21 to 30 of about 75,364 (265)

X-ray Crystallographic Study of Ranaconitine

open access: yesNatural Product Communications, 2011
The crystal structure of natural diterpenoid alkaloid ranaconitine isolated from Aconitum sinomontanum Nakai has been determined by single crystal X-ray diffraction analysis.
Yang Li   +5 more
doaj   +1 more source

Crystal structure of a methimazole-based ionic liquid

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The structure of 1-methyl-2-(prop-2-en-1-ylsulfanyl)-1H-imidazol-3-ium bromide, C7H11N2S+·Br−, has monoclinic (P21/c) symmetry. In the crystal, the components are linked by N—H...Br and C—H...Br hydrogen bonds. The crystal structure of the title compound
Jamie C. Gaitor   +8 more
doaj   +1 more source

High-pressure neutron study of the morphotropic PZT: phase transitions in a two-phase system [PDF]

open access: yes, 2012
In piezoelectric ceramics the changes in the phase stabilities versus stress and temperature in the vicinity of the phase boundary play a central role. The present study was dedicated to the classical piezoelectric, lead-zirconate-titanate (PZT) ceramic ...
A. M. Asiri   +12 more
core   +2 more sources

X-ray, Hirshfeld surface analysis, spectroscopic and DFT studies of polycyclic aromatic hydrocarbons: Fluoranthene and acenaphthene [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
The X-ray structure, theoretical calculation, Hirshfeld surfaces analysis, IR and Raman spectra of fluoranthene and acenaphthene were reported. Acenaphthene crystallizes in the orthorhombic crystal system and space group P21ma, with crystal ...
Śmiszek-Lindert Wioleta   +5 more
doaj   +1 more source

The iridium double perovskite Sr2YIrO6 revisited: A combined structural and specific heat study [PDF]

open access: yes, 2016
Recently, the iridate double perovskite Sr$_2$YIrO$_6$ has attracted considerable attention due to the report of unexpected magnetism in this Ir$^{5+}$ (5d$^4$) material, in which according to the J$_{eff}$ model, a non-magnetic ground state is expected.
Aslan-Cansever, G.   +13 more
core   +1 more source

Synthesis, Characterization and Determination of the Crystal Structure of New Cadmium Coordination Polymers Based on Bridging Schiff-Base Pyridine Ligand; Investigation of Hirshfeld Surface Analysis [PDF]

open access: yesشیمی کاربردی روز, 2020
Two new polymeric compounds of cadmium acetate and Schiff-base ligand 1,2-bis(1-(pyridine-4-yl)ethylydine)hydrazine, L, [Cd(OAc)2(L)]n ,(1) and [Cd(OAc)2(L)(H2O)]n , (2) were synthesized and characterized by single crystal X-ray diffraction analysis ...
Behrouz Notash   +2 more
doaj   +1 more source

Crystal structures of 5-chloro-2-methoxybenzoates of Mn(II), Co(II), Ni(II) and Zn(II)

open access: yesEclética Química, 2018
The crystal and molecular structures of [bis(5-chloro-2- methoxybenzoate)tetraaquamanganese(II)], [pentaaqua(5-chloro-2-methoxybenzoato)cobalt(II)] (5- chloro-2-methoxybenzoate), [pentaaqua(5-chloro-2-methoxybenzoato)nickel(II)] (5-chloro-2 ...
K. Stêpniak   +3 more
doaj   +1 more source

Rayleigh waves in anisotropic crystals rotating about the normal to a symmetry plane [PDF]

open access: yes, 2012
The propagation of surface acoustic waves in a rotating anisotropic crystal is studied. The crystal is monoclinic and cut along a plane containing the normal to the symmetry plane; this normal is also the axis of rotation.
Destrade, Michel
core   +2 more sources

Atomistic studies of transformation pathways and energetics in plutonium

open access: yes, 2008
One of the most challenging problems in understanding the structural phase transformations in Pu is to determine the energetically favored, continuous atomic pathways from one crystal symmetry to another.
A. Saxena   +7 more
core   +1 more source

Anomalous electrical conductivity in rapidly crystallized Cu${}_{50-x}$Zr${}_{x}$ (x = 50 - 66.6) alloys [PDF]

open access: yes, 2015
Cu${}_{50-x}$Zr${}_{x}$ (x = 50, 54, 60 and 66.6) polycrystalline alloys were prepared by arc-melting. The crystal structure of the ingots has been examined by X-ray diffraction.
Chtchelkatchev, N. M.   +3 more
core   +1 more source

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