Zobrazeno 1 - 10
of 10
pro vyhledávání: '"M. C. Gelabert"'
Publikováno v:
Chemistry of Materials. 10:613-619
KxBa1-xCoS2 was synthesized by a new technique using a closed vitreous carbon crucible. Single crystals prepared from materials of nominal composition x = 0.2 were found to have only modest substitution levels (x ≈ 0.07) by microprobe and X-ray ana
Publikováno v:
Chemistry - A European Journal. 3:1884-1889
Ba6Ni25S27, synthesized by solid-state reaction of BaS, NiS, and Ni at 675°C, is cubic (Pm3m, a = 10.057(1) A). The structure was refined by using powder X-ray diffraction and Rietveld methods with Rp = 6.28%, Rwp = 8.13%, χ2 = 3.120. The structure
Publikováno v:
Journal of Solid State Chemistry. 127:211-221
BaCoS 2−δ consists of at least three different polymorphs: two that are stoichiometric and one that is potentially sulfur deficient with 0.0 ≤ δ ≤ 0.2. Two of these polymorphs were investigated here: a tetragonal single crystal P 4/ nmm , a =
Publikováno v:
Journal of Alloys and Compounds. 241:89-94
BaCu x Ni 1− x S 2−δ is found to be single phase for x = 0.0, 0.1, 0.2, 0.3 and 0.4, and δ = 0.00 to 0.09 and is isostructural with tetragonal BaNiS 2 . Lattice parameters ( a = 4.4374(2)A and c = 8.9089(4)A for x = 0.0; a = 4.4659(2)A and c =
Publikováno v:
Journal of Alloys and Compounds. 235:135-142
Air sensitive single crystals of K 2 Ni 3 S 4 have been synthesized by reaction of 1Ni, 2K 2 S and 4S in an evacuated silica tube at 750°C for 6 days. The structure was solved in the Fddd space group with a = 5.723(2)A, b = 10.040(3) A and c = 26.05
Publikováno v:
Journal of Solid State Chemistry. 113:355-361
BaCoS 2 is orthorhombic Cmma a = 6.4413(3) A, b = 6.4926(3) A, c = 8.9406(3) A, and is closely related to BaNiS 2 , which contains Ni-S layers separated by rock salt BaS sheets. Crystals were grown from the melt by slow cooling from 1050 to 950°C. T
Publikováno v:
ChemInform. 27
Air sensitive single crystals of K 2 Ni 3 S 4 have been synthesized by reaction of 1Ni, 2K 2 S and 4S in an evacuated silica tube at 750°C for 6 days. The structure was solved in the Fddd space group with a = 5.723(2)A, b = 10.040(3) A and c = 26.05
Publikováno v:
ChemInform. 27
BaCu x Ni 1− x S 2−δ is found to be single phase for x = 0.0, 0.1, 0.2, 0.3 and 0.4, and δ = 0.00 to 0.09 and is isostructural with tetragonal BaNiS 2 . Lattice parameters ( a = 4.4374(2)A and c = 8.9089(4)A for x = 0.0; a = 4.4659(2)A and c =
Publikováno v:
ChemInform. 29
Ba6Ni25S27, synthesized by solid-state reaction of BaS, NiS, and Ni at 675°C, is cubic (Pm3m, a = 10.057(1) A). The structure was refined by using powder X-ray diffraction and Rietveld methods with Rp = 6.28%, Rwp = 8.13%, χ2 = 3.120. The structure
Publikováno v:
ChemInform. 29