Universität zu Köln

Larres, Markus, Pantenburg, Ingo and Meyer, Gerd ORCID: 0000-0003-1000-9001 (2013). The First Rare-Earth Metal Telluride Chlorides, RTeCl (R = La, Ce, Pr, Nd). Z. Anorg. Allg. Chem., 639 (15). S. 2744 - 2748. WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-3749

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Abstract

The first rare-earth metal telluride chlorides, RTeCl with R = La, Ce, Pr, Nd, were obtained as single crystals and/or powder samples by the reaction of anhydrous rare-earth trichlorides, RCl3, with the respective rare-earth metals R and elemental tellurium (Te) in sealed tantalum containers at temperatures as high as 1050 degrees C. All four telluride-chlorides crystallize with the so-called tetragonal PbFCl type of structure but according to RTeCl = PbClF, with, for the example of LaTeCl-I, a = 451.7(1), c = 827.4(2) pm, V-E/Z = 84.5(1) angstrom(3), tetragonal, P4/nnm (No. 129). LaTeCl and CeTeCl are dimorphic, the second modification crystallizes with the PbCl2 type of structure with, for LaTeCl-II, a = 795.2(1), b = 450.8(1), c = 940.4(1) pm, V-E/Z = 84.3(1) angstrom(3), orthorhombic, Pnma (No. 62). In both structures, La3+ is nine-coordinate, [LaTe5Cl4], with similar mean La-Te and La-Cl distances in both modifications, 333.2 vs. 333.1 pm and 302.9 vs. 301.8 pm, respectively.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Larres, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Pantenburg, Ingo UNSPECIFIED UNSPECIFIED UNSPECIFIED Meyer, Gerd UNSPECIFIED orcid.org/0000-0003-1000-9001 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-470786
DOI:	10.1002/zaac.201300406
Journal or Publication Title:	Z. Anorg. Allg. Chem.
Volume:	639
Number:	15
Page Range:	S. 2744 - 2748
Date:	2013
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1521-3749
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BROMIDE; IODIDE; ROUTE Multiple languages Chemistry, Inorganic & Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47078