Universität zu Köln

Rhodehouse, Melissa L., Bell, Thomas, Smetana, Volodymyr ORCID: 0000-0003-0763-1457, Mudring, Anja-Verena and Meyer, Gerd H. (2018). An Obscured or Nonexistent Binary Intermetallic, Co7Pr17, Its Existent Neighbor Co2Pr5, and Two New Ternaries in the System Co/Sn/Pr, CoSn3Pr1-x, and Co2-xSn7Pr3. Cryst. Growth Des., 18 (10). S. 6273 - 6284. WASHINGTON: AMER CHEMICAL SOC. ISSN 1528-7505

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Abstract

Four compounds are reported in this study. Co7Pr17 (10, cP96, P2(1)3, a = 13.4147(8) angstrom, Z = 4), either nonexistent 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) angstrom, b = 6.5107(3) angstrom, c = 7.1067(3) angstrom, beta = 96.230(3)degrees, 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, Pm(3) over barn, a = 9.587(3) angstrom, Z = 8) and Co2-xSn7Pr3 (x = 0.78, 12, Ni2-xSn7-yCe3 type, oC24, Cmmm, a = 4.5043(4) angstrom, b = 27.227(2) angstrom, c = 4.5444(3) angstrom, 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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rhodehouse, Melissa L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bell, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Smetana, Volodymyr UNSPECIFIED orcid.org/0000-0003-0763-1457 UNSPECIFIED Mudring, Anja-Verena UNSPECIFIED UNSPECIFIED UNSPECIFIED Meyer, Gerd H. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-171183
DOI:	10.1021/acs.cgd.8b01141
Journal or Publication Title:	Cryst. Growth Des.
Volume:	18
Number:	10
Page Range:	S. 6273 - 6284
Date:	2018
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1528-7505
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ICOSAHEDRAL LI CLUSTERS; CRYSTAL-STRUCTURE; RARE-EARTH; MAGNETIC-PROPERTIES; PHYSICAL-PROPERTIES; LAYERED STRUCTURES; COMPOUNDS R; GOLD; SN; CHEMISTRY Multiple languages Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17118