Universität zu Köln

Steinberg, Simon ORCID: 0000-0001-8022-7018, Valldor, Martin and Meyer, Gerd ORCID: 0000-0003-1000-9001 (2013). Change of magnetic and electronic features through subtle substitution in cubic, non-centrosymmetric extended rare-earth metal cluster complexes {TR3}X-3. J. Solid State Chem., 206. S. 176 - 182. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1095-726X

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Abstract

The new compound {IrCe3}I-3 was synthesized by comproportionation reactions of stoichiometric ratios of CeI3, Ce and Ir. Single crystal X-ray diffraction structure determination shows that {IrCe3}I-3 crystallizes with the cubic variant of the {TR3}X-3 family (I4(1)32, Z=8, a=12.450(1) angstrom, V=1930.0(3) angstrom(3)) and is isostructural with the recently reported {RuLa3}Br-3. Octahedral {IrCe6} clusters share three common edges forming interpenetrating chains that run along the 4(1) screw axes. Magnetic measurements on pure powder samples of {IrCe3}I-3 show paramagnetic behavior and, at temperatures below 2 K, a mictomagnetic state. The isostructural {RuLa3}Br-3 is a Pauli paramagnet suggesting metallic conductivity which is consistent with band structure calculations where the Fermi level is placed below a pseudogap. For {IrCe3}I-3, on the contrary, the Fermi level falls in a narrow gap rather than a pseudogap suggesting activated conductivity. (C) 2013 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Steinberg, Simon UNSPECIFIED orcid.org/0000-0001-8022-7018 UNSPECIFIED Valldor, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Meyer, Gerd UNSPECIFIED orcid.org/0000-0003-1000-9001 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-474639
DOI:	10.1016/j.jssc.2013.08.012
Journal or Publication Title:	J. Solid State Chem.
Volume:	206
Page Range:	S. 176 - 182
Date:	2013
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1095-726X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TRANSITION-METALS; EXPLORATORY SYNTHESIS; MOLECULAR-COMPLEXES; OXIDATION-STATE; HALIDES; ELEMENTS; IODIDES; PHASES; INTERMETALLICS; INTERSTITIALS Multiple languages Chemistry, Inorganic & Nuclear; Chemistry, Physical Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47463