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Title: An Obscured or Nonexistent Binary Intermetallic, Co 7 Pr 17 , Its Existent Neighbor Co 2 Pr 5 , and Two New Ternaries in the System Co/Sn/Pr, CoSn 3 Pr 1–x , and Co 2–x Sn 7 Pr 3

Abstract

Four compounds are reported in this study. Co7Pr17 (10, cP96, P213, a = 13.4147(8) Å, Z = 4), either non-existent or obscured in the Co/Pr phase diagram has been obtained from a PrBr3 flux. With 29.2 mol% Co, it is close to Co2Pr5 (28.6 mol% Co, 2, C2Mn5 type of structure, mC28, C2/c, a = 16.5471(7) Å, b = 6.5107(3) Å, c = 7.1067(3) Å, β = 96.230(3)', Z = 4), existent in the Co/Pr phase diagram, produced by arc-melting of a stoichiometric mixture of the metals. The addition of the reactive metal tin to Co/Pr mixtures yielded two new ternary polar intermetallics, CoSn3Pr1-x (x = 0.04, 11, RuSn3La type, cP40, Pm3-n, a = 9.587(3) Å, Z = 8) and Co2–xSn7Pr3 (x = 0.78, 12, Ni2–xSn7–yCe3 type, oC24, Cmmm, a = 4.5043(4) Å, b = 27.227(2) Å, c = 4.5444(3) Å, Z = 2). Electronic structure calculations reveal extensive heteroatomic Co-Pr interactions in the binaries with little homoatomic contributions. With tin as the third component in the ternaries, heteroatomic Co–Sn and Sn–Pr bonding interactions are dominant, following the sequence of coordination spheres around Co.

Authors:
 [1];  [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]
  1. Ames Lab., Ames, IA (United States)
  2. Univ. zu Koln (Germany)
  3. Ames Lab., Ames, IA (United States); Stockholm Univ. (Sweden)
  4. Ames Lab., Ames, IA (United States); Stockholm Univ. (Sweden); Iowa State Univ., Ames, IA (United States)
  5. Ames Lab., Ames, IA (United States); Univ. zu Koln (Germany)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1477240
Report Number(s):
IS-J-9755
Journal ID: ISSN 1528-7483
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Crystal Growth and Design
Additional Journal Information:
Journal Volume: 18; Journal Issue: 10; Journal ID: ISSN 1528-7483
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Rhodehouse, Melissa L., Bell, Thomas, Smetana, Volodymyr, Mudring, Anja-Verena, and Meyer, Gerd H. An Obscured or Nonexistent Binary Intermetallic, Co 7 Pr 17 , Its Existent Neighbor Co 2 Pr 5 , and Two New Ternaries in the System Co/Sn/Pr, CoSn 3 Pr 1–x , and Co 2–x Sn 7 Pr 3. United States: N. p., 2018. Web. doi:10.1021/acs.cgd.8b01141.
Rhodehouse, Melissa L., Bell, Thomas, Smetana, Volodymyr, Mudring, Anja-Verena, & Meyer, Gerd H. An Obscured or Nonexistent Binary Intermetallic, Co 7 Pr 17 , Its Existent Neighbor Co 2 Pr 5 , and Two New Ternaries in the System Co/Sn/Pr, CoSn 3 Pr 1–x , and Co 2–x Sn 7 Pr 3. United States. https://doi.org/10.1021/acs.cgd.8b01141
Rhodehouse, Melissa L., Bell, Thomas, Smetana, Volodymyr, Mudring, Anja-Verena, and Meyer, Gerd H. Thu . "An Obscured or Nonexistent Binary Intermetallic, Co 7 Pr 17 , Its Existent Neighbor Co 2 Pr 5 , and Two New Ternaries in the System Co/Sn/Pr, CoSn 3 Pr 1–x , and Co 2–x Sn 7 Pr 3". United States. https://doi.org/10.1021/acs.cgd.8b01141. https://www.osti.gov/servlets/purl/1477240.
@article{osti_1477240,
title = {An Obscured or Nonexistent Binary Intermetallic, Co 7 Pr 17 , Its Existent Neighbor Co 2 Pr 5 , and Two New Ternaries in the System Co/Sn/Pr, CoSn 3 Pr 1–x , and Co 2–x Sn 7 Pr 3},
author = {Rhodehouse, Melissa L. and Bell, Thomas and Smetana, Volodymyr and Mudring, Anja-Verena and Meyer, Gerd H.},
abstractNote = {Four compounds are reported in this study. Co7Pr17 (10, cP96, P213, a = 13.4147(8) Å, Z = 4), either non-existent or obscured in the Co/Pr phase diagram has been obtained from a PrBr3 flux. With 29.2 mol% Co, it is close to Co2Pr5 (28.6 mol% Co, 2, C2Mn5 type of structure, mC28, C2/c, a = 16.5471(7) Å, b = 6.5107(3) Å, c = 7.1067(3) Å, β = 96.230(3)', Z = 4), existent in the Co/Pr phase diagram, produced by arc-melting of a stoichiometric mixture of the metals. The addition of the reactive metal tin to Co/Pr mixtures yielded two new ternary polar intermetallics, CoSn3Pr1-x (x = 0.04, 11, RuSn3La type, cP40, Pm3-n, a = 9.587(3) Å, Z = 8) and Co2–xSn7Pr3 (x = 0.78, 12, Ni2–xSn7–yCe3 type, oC24, Cmmm, a = 4.5043(4) Å, b = 27.227(2) Å, c = 4.5444(3) Å, Z = 2). Electronic structure calculations reveal extensive heteroatomic Co-Pr interactions in the binaries with little homoatomic contributions. With tin as the third component in the ternaries, heteroatomic Co–Sn and Sn–Pr bonding interactions are dominant, following the sequence of coordination spheres around Co.},
doi = {10.1021/acs.cgd.8b01141},
journal = {Crystal Growth and Design},
number = 10,
volume = 18,
place = {United States},
year = {Thu Sep 06 00:00:00 EDT 2018},
month = {Thu Sep 06 00:00:00 EDT 2018}
}

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Figures / Tables:

Figure 1 Figure 1: The Co/Sn/Pr compositional triangle. Blue: binaries; red: new intermetallics; green: reported ternaries.

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