Crystal Chemistry of RE6MgxCd23-xPb [0.6(1) ≤ x ≤ 3.2(1); RE = La and Ce]. New Mixed-Metal Derivatives of the RE6Cd23T Phases (T = Group 14/15/16 Element)
Abstract
Synthesis and crystal structure determinations are reported for six quaternary phases with the general formula RE 6 Mg x Cd 23– x Pb [ RE = La, Ce; 0.6(1) ≤ x ≤ 3.2(1)]. These compounds were prepared by high temperature reactions of the elements in sealed Nb tubes. As revealed by powder and single‐crystal X‐ray diffraction, their crystal structures are of the cubic Zr 6 Zn 23 Si system ( cF 120, Fm 3 m, Z = 4), itself an interstitially filled variant of the Th 6 Mn 23 structure type. Rather than distributing equally across the entire Cd 23 sub‐structure, Mg displayed a tendency to accumulate at specific sites (most notably 4 a ); charge differences between sites within the sub‐structure, as revealed by computational methods, are the likeliest explanation.
- Authors:
-
- Univ. of Delaware, Newark, DE (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Univ. of Delaware, Newark, DE (United States)
- Publication Date:
- Research Org.:
- Univ. of Delaware, Newark, DE (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1595054
- Alternate Identifier(s):
- OSTI ID: 1469407
- Grant/Contract Number:
- SC0008885
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Zeitschrift fuer Anorganische und Allgemeine Chemie
- Additional Journal Information:
- Journal Volume: 644; Journal Issue: 24; Journal ID: ISSN 0044-2313
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Intermetallic phases; Solid-state structures; Electronic structure; Lanthanides; Cadmium
Citation Formats
Desroches, Griffen, Ovchinnikov, Alexander, and Bobev, Svilen. Crystal Chemistry of RE6MgxCd23-xPb [0.6(1) ≤ x ≤ 3.2(1); RE = La and Ce]. New Mixed-Metal Derivatives of the RE6Cd23T Phases (T = Group 14/15/16 Element). United States: N. p., 2018.
Web. doi:10.1002/zaac.201800317.
Desroches, Griffen, Ovchinnikov, Alexander, & Bobev, Svilen. Crystal Chemistry of RE6MgxCd23-xPb [0.6(1) ≤ x ≤ 3.2(1); RE = La and Ce]. New Mixed-Metal Derivatives of the RE6Cd23T Phases (T = Group 14/15/16 Element). United States. https://doi.org/10.1002/zaac.201800317
Desroches, Griffen, Ovchinnikov, Alexander, and Bobev, Svilen. Tue .
"Crystal Chemistry of RE6MgxCd23-xPb [0.6(1) ≤ x ≤ 3.2(1); RE = La and Ce]. New Mixed-Metal Derivatives of the RE6Cd23T Phases (T = Group 14/15/16 Element)". United States. https://doi.org/10.1002/zaac.201800317. https://www.osti.gov/servlets/purl/1595054.
@article{osti_1595054,
title = {Crystal Chemistry of RE6MgxCd23-xPb [0.6(1) ≤ x ≤ 3.2(1); RE = La and Ce]. New Mixed-Metal Derivatives of the RE6Cd23T Phases (T = Group 14/15/16 Element)},
author = {Desroches, Griffen and Ovchinnikov, Alexander and Bobev, Svilen},
abstractNote = {Synthesis and crystal structure determinations are reported for six quaternary phases with the general formula RE 6 Mg x Cd 23– x Pb [ RE = La, Ce; 0.6(1) ≤ x ≤ 3.2(1)]. These compounds were prepared by high temperature reactions of the elements in sealed Nb tubes. As revealed by powder and single‐crystal X‐ray diffraction, their crystal structures are of the cubic Zr 6 Zn 23 Si system ( cF 120, Fm 3 m, Z = 4), itself an interstitially filled variant of the Th 6 Mn 23 structure type. Rather than distributing equally across the entire Cd 23 sub‐structure, Mg displayed a tendency to accumulate at specific sites (most notably 4 a ); charge differences between sites within the sub‐structure, as revealed by computational methods, are the likeliest explanation.},
doi = {10.1002/zaac.201800317},
journal = {Zeitschrift fuer Anorganische und Allgemeine Chemie},
number = 24,
volume = 644,
place = {United States},
year = {Tue Sep 11 00:00:00 EDT 2018},
month = {Tue Sep 11 00:00:00 EDT 2018}
}
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