The crystal structure of the Nd2Os3Si5 compound was refined from single-crystal X-ray diffraction (P4/mnc space group, a = 10.762(5) A, c = 5.796(2) Angstrom) down to R = 0.0662 for 393 reflections with F-0 > 4sigma(F-0). This compound belongs to a partly disordered U2Mn3Si5 type structure: the Si2 site has been refined with a split position x,y,z (16i) instead of xx + 1/2,1/4 (8g), and for an occupancy of 50%. X-Ray single-crystal investigations of the PrOs2Si2 and Ce(Ru0.6Os0.4)(2)Si-2 compounds were also performed for the first time. Both compounds crystallize in the CeGa2Al2 structure type, 14/mmm space group, with a = 4.1678(4) Angstrom, c = 9.901(1) Angstrom, R = 0.0433 and a = 4.173(1) Angstrom, c = 9.797(3) Angstrom, R = 0.0393, respectively.
X-Ray single-crystal investigation of rare earth osmium silicides / Rizzoli, Corrado; P. S., Salamakha; O. L., Sologub; Belletti, Daniele; A. P., Goncalves; M., Almeida. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - 363:(2004), pp. 217-222. [10.1016/S0925-8388(03)00470-5]
X-Ray single-crystal investigation of rare earth osmium silicides
RIZZOLI, Corrado;BELLETTI, Daniele;
2004-01-01
Abstract
The crystal structure of the Nd2Os3Si5 compound was refined from single-crystal X-ray diffraction (P4/mnc space group, a = 10.762(5) A, c = 5.796(2) Angstrom) down to R = 0.0662 for 393 reflections with F-0 > 4sigma(F-0). This compound belongs to a partly disordered U2Mn3Si5 type structure: the Si2 site has been refined with a split position x,y,z (16i) instead of xx + 1/2,1/4 (8g), and for an occupancy of 50%. X-Ray single-crystal investigations of the PrOs2Si2 and Ce(Ru0.6Os0.4)(2)Si-2 compounds were also performed for the first time. Both compounds crystallize in the CeGa2Al2 structure type, 14/mmm space group, with a = 4.1678(4) Angstrom, c = 9.901(1) Angstrom, R = 0.0433 and a = 4.173(1) Angstrom, c = 9.797(3) Angstrom, R = 0.0393, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
