Redetermination of the perovskite-type compound YRh3B revealing a Rh deficiency
نویسندگان
چکیده
In contrast with previous structural studies of ytterbium trirhodium boride, YbRh(3)B, that suggest a boron deficiency, the current redetermination of the crystal structure of YbRh(3)B revealed instead a rhodium deficiency with a refined composition of YbRh(2.67 (2))B. In the ABX(3) perovskite-type structure, Yb, B and Rh are located on the A, B and X positions, respectively, with site symmetries of mm for the A and B sites, and 4/mm.m for the X site.
منابع مشابه
Redetermination of terbium scandate, revealing a defect-type perovskite derivative
The crystal structure of terbium(III) scandate(III), with ideal formula TbScO(3), has been reported previously on the basis of powder diffraction data [Liferovich & Mitchell (2004 ▶). J. Solid State Chem.177, 2188-2197]. The current data were obtained from single crystals grown by the Czochralski method and show an improvement in the precision of the geometric parameters. Moreover, inductively ...
متن کاملRedetermination of EuScO3
Single crystals of europium(III) scandate(III), with ideal formula EuScO(3), were grown from the melt using the micro-pulling-down method. The title compound crystallizes in an ortho-rhom-bic distorted perovskite-type structure, where Eu occupies the eightfold coordinated A sites (site symmetry m) and Sc resides on the centres of corner-sharing [ScO(6)] octa-hedra (B sites with site symmetry )....
متن کاملRedetermination of the distorted perovskite Nd0.53Sr0.47MnO3
Neodymium strontium manganese oxide with ideal composition Nd(0.5)Sr(0.5)MnO(3) was reported to have two different structure models. In one model, the x coordinate of an O atom is at x > 1/2, while in the other model the x-coordinate of this atom is at x < 1/2. Difference-density maps around this O atom obtained from the current redetermination clearly show that the structure with the O atom at...
متن کاملEpidemiologic Study of G6PD deficiency in infants with Jaundice in Khalij-Fars Hospital of Bandar-Abbas in 2015
Background: The purpose of this study was to determine the prevalence of G6PD deficiency in infants with jaundice in Khalij-Fars Hospital of Bandar Abbas in 2015. Methods: In this descriptive-analytic cross-sectional study, which is done in 2015 in Khalij-Fars Hospital of Bandar-Abbas, 226 infants with jaundice were entered. Admission age, hospitalization time, gender, age of birth, birth weig...
متن کاملRedetermination of Nd2Ti2O7: a non-centrosymmetric structure with perovskite-type slabs
Single crystals of dineodymium(III) dititanium(IV) hepta-oxide, Nd2Ti2O7, were synthesized by the flux method and found to belong to the family of compounds with perovskite-type structural motifs. The asymmetric unit contains four Nd, four Ti and 14 O-atom sites. The perovskite-type slabs are stacked parallel to (010) with a thickness corresponding to four corner-sharing TiO6 octa-hedra. The Nd...
متن کامل