Bruehmann, Matthias, Mudring, Anja-Verena, Valldor, Martin and Meyer, Gerd ORCID: 0000-0003-1000-9001 (2011). {Os5Lu20}I-24, the First Extended Cluster Complex of Lutetium with Eight-Coordinate Endohedral Osmium Atoms in Two Different Environments. Eur. J. Inorg. Chem. (26). S. 4083 - 4089. MALDEN: WILEY-BLACKWELL. ISSN 1434-1948
Full text not available from this repository.Abstract
{Os5Lu20}I-24 was obtained from a conproportionation reaction of lutetium and lutetium triiodide in the presence of osmium in an arc-welded tantalum container at 850-1200 degrees C. The crystal structure has been determined by single-crystal X-ray diffraction analysis. Square antiprisms and cubes of lutetium atoms in a 4: 1 ratio share common square faces in a chain; they encapsulate osmium atoms and are surrounded by iodide ions. Os-Os distances within the cluster chains (299, 303, and 325 pm) imply only little if no bonding between neighbouring osmium atoms. The cluster complex chains are packed in the fashion of a hexagonal closest packing of rods. There are only van der Waals interactions between these chains as the shortest inter-chain Lu-I distances of 468 pm attest. Electronic structure calculations show mainly Os-Lu and Lu-I bonding, with lesser Lu-Lu and negligible Os-Os contributions. Remarkable is the considerable population of Lu-5d states close to the Fermi level. Susceptibility measurements show complex magnetic behavior with ferromagnetic coupling in the {Os5Lu20} chains and antiferromagnetic coupling between the chains, which results in geometric frustration. As a consequence, the spin system has a cluster-glasslike ground state.
Item Type: | Journal Article | ||||||||||||||||||||
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URN: | urn:nbn:de:hbz:38-489514 | ||||||||||||||||||||
DOI: | 10.1002/ejic.201100451 | ||||||||||||||||||||
Journal or Publication Title: | Eur. J. Inorg. Chem. | ||||||||||||||||||||
Number: | 26 | ||||||||||||||||||||
Page Range: | S. 4083 - 4089 | ||||||||||||||||||||
Date: | 2011 | ||||||||||||||||||||
Publisher: | WILEY-BLACKWELL | ||||||||||||||||||||
Place of Publication: | MALDEN | ||||||||||||||||||||
ISSN: | 1434-1948 | ||||||||||||||||||||
Language: | English | ||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||
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URI: | http://kups.ub.uni-koeln.de/id/eprint/48951 |
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