Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Solid Solutions RE 16 Rh 11–x Z x (RE = La, Ce, Pr, Nd, Sm; Z = Ga, Zn, Cd, In, Sn, Sb, Pb, Bi) – Centrosymmetric n = 2 Variants of Parthé’s Homologous Series A 5n+6 B 3n+5

Solid Solutions RE 16 Rh 11–x Z x (RE = La, Ce, Pr, Nd, Sm; Z = Ga, Zn, Cd, In, Sn, Sb, Pb, Bi) –... Several samples of solid solutions RE 16 Rh 11-x Z x (RE = La, Ce, Pr, Nd, Sm; Z = Ga, Zn, Cd,In, Sn, Sb, Pb, Bi) were synthesized by high-frequency melting of the elements in sealed tantalum ampoules. The samples were characterized by powder X-ray diffraction, and the structures of eight compounds were refined on the basis of single-crystal X-ray diffractometer data. The compounds crystallize with a centrosymmetric variant (space group P4⁄mbm) of the Ca 16 Sb 11 type (P4̄ 2 1 m). The relation between both structure types is discussed on the basis of a group-subgroup scheme. Only for La 16 Rh 8 Sn 3 we observed full rhodium-tin ordering. The striking structural motif is a chain of face-sharing square prisms (filled with tin) and anti-prisms (filled with rhodium). The La 16 Rh 8 Sn 3 structure is closely related to the structure types W 5 Si 3 , Ca 16 Sb 11 , Y 3 Rh 2 , Sm 26 Co 11 Ga 6 , Pu 31 Pt 20 , and Yb 36 Sn 23 and is the centrosymmetric n = 2 member of Parthé’s A 5n+6 B 3n+5 series. 119 Sn Mössbauer spectra resolved the two crystallographically independent tin sites of La 16 Rh 8 Sn 3 , while a Pr 16 Rh 9 Sb 2 sample shows only a singlet in its 121 Sb Mössbauer spectrum. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Zeitschrift für Naturforschung B de Gruyter

Solid Solutions RE 16 Rh 11–x Z x (RE = La, Ce, Pr, Nd, Sm; Z = Ga, Zn, Cd, In, Sn, Sb, Pb, Bi) – Centrosymmetric n = 2 Variants of Parthé’s Homologous Series A 5n+6 B 3n+5

Loading next page...
 
/lp/de-gruyter/solid-solutions-re-16-rh-11-x-z-x-re-la-ce-pr-nd-sm-z-ga-zn-cd-in-sn-VeE7FVO7h0

References

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
de Gruyter
Copyright
Copyright © 2012 by the
ISSN
0932-0776
eISSN
1865-7117
DOI
10.5560/znb.2012-0070
Publisher site
See Article on Publisher Site

Abstract

Several samples of solid solutions RE 16 Rh 11-x Z x (RE = La, Ce, Pr, Nd, Sm; Z = Ga, Zn, Cd,In, Sn, Sb, Pb, Bi) were synthesized by high-frequency melting of the elements in sealed tantalum ampoules. The samples were characterized by powder X-ray diffraction, and the structures of eight compounds were refined on the basis of single-crystal X-ray diffractometer data. The compounds crystallize with a centrosymmetric variant (space group P4⁄mbm) of the Ca 16 Sb 11 type (P4̄ 2 1 m). The relation between both structure types is discussed on the basis of a group-subgroup scheme. Only for La 16 Rh 8 Sn 3 we observed full rhodium-tin ordering. The striking structural motif is a chain of face-sharing square prisms (filled with tin) and anti-prisms (filled with rhodium). The La 16 Rh 8 Sn 3 structure is closely related to the structure types W 5 Si 3 , Ca 16 Sb 11 , Y 3 Rh 2 , Sm 26 Co 11 Ga 6 , Pu 31 Pt 20 , and Yb 36 Sn 23 and is the centrosymmetric n = 2 member of Parthé’s A 5n+6 B 3n+5 series. 119 Sn Mössbauer spectra resolved the two crystallographically independent tin sites of La 16 Rh 8 Sn 3 , while a Pr 16 Rh 9 Sb 2 sample shows only a singlet in its 121 Sb Mössbauer spectrum.

Journal

Zeitschrift für Naturforschung Bde Gruyter

Published: Jun 1, 2012

There are no references for this article.