Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Carlos Mujica"'
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 637:919-922
The title compound Pb(ReO4)2(C2H6O2)1.5 was prepared by recrystallization of the anhydrous lead perrhenate in ethane-1,2-diol (ethylene glycol). The colorless compound crystallizes in the monoclinic space group P21/n (No. 14) with four formula units
Publikováno v:
JOURNAL OF SOLID STATE CHEMISTRY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
The ternary copper(I) samarium(III) sulfide SmCuS 2 has been prepared by heating SmS and CuS in the ratio 1:1 at 1273 K for 3 days in sealed quartz ampoule. Single-crystal diffraction analysis shows that SmCuS 2 crystallizes monoclinic in the LaCuS 2
Publikováno v:
Journal of Solid State Chemistry. 173:78-82
Four quaternary sulfides SrCu 2 M S 4 and EuCu 2 M S 4 ( M =Ge and Sn) were prepared from a thoroughly ground mixture of EuS or SrS, Cu, or Sn, and S in stoichiometric proportions. Electrical conductivity measurements on pressed pellets showed that a
Publikováno v:
Journal of Alloys and Compounds. 307:127-130
The europium rhenium oxide Eu2ReO5 has been synthesized by solid state reaction of Eu3ReO8 with metallic rhenium and europium oxide Eu2O3 at 1450 K in sealed silica ampoules. The crystal structure was determined by X-ray diffraction analysis on a twi
Publikováno v:
Journal of Alloys and Compounds. 288:120-123
Trisaquatris(tetraoxorhenate(VII)) europium(III), Eu(ReO4)3(H2O)3 was prepared by the reaction of Eu2O3 with concentrated HReO4 at room temperature. The colorless compound crystallizes in the orthorhombic space group Pna21 (No. 33) with four formula
Autor:
Carlos Mujica, Jaime Llanos
Publikováno v:
Materials Research Bulletin. 32:1313-1321
The electrical properties and bonding in Ba{sub 6}Cu{sub 12}Fe{sub 13}S{sub 27} are analyzed with the extended Hueckel tight-binding method. Because the Fermi level crosses several bands, metallic properties could be expected for this material. The e
Publikováno v:
Journal of Alloys and Compounds. 255:227-230
The new barium copper(I) sulfide tetrathiovanadate(V), Ba 2 Cu 3 S 2 [VS 4 ], was obtained as a by-product of the reaction of BaS with sulvanite (Cu 3 VS 4 ). The compound crystallizes monoclinically in the space group C2 c (No. 15), with four formul
Publikováno v:
Materials Research Bulletin. 31:483-486
The insertion of polyethyleneoxide in a lamellar copper iron sulfide of formula CuFeS 2 by an exchange reaction of potassium from KCuFeS 2 with an aqueous solution of the polymer was performed. The characterization of the new compound by X-ray diffra
Publikováno v:
Journal of Solid State Chemistry. 122:31-35
The new chalcogenide CsCuFeS 2 has been prepared by solid state reaction of stoichiometric amounts of CuFeS 2 and Cs 2 CO 3 at 1280 K. This phase crystallizes in the ThCr 2 Si 2 -type structure with space group I 4/ mmm (No. 139), Z = 2, and cell con
Publikováno v:
Materials Research Bulletin. 30:43-48
The insertion of alkali metals in chalcopyrite has been investigated by X-ray photoelectron spectroscopy and band structure calculations of the extended Huckel type. The results show that the alkali metal insertion (removal) reaction, which correspon