Universität zu Köln

Hetzert, Marc, Werker, Melanie and Ruschewitz, Uwe ORCID: 0000-0002-6511-6894 (2018). A(I)SeC(2)H (A(I)=K, Rb, Cs): Crystalline Compounds with the Elusive Se--CC-H Anion. Angew. Chem.-Int. Edit., 57 (50). S. 16475 - 16480. WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-3773

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Abstract

By reaction of alkali metal acetylides, A(I)C(2)H (A(I)=K, Rb, Cs), with elemental selenium in liquid ammonia highly crystalline powders of A(I)SeC(2)H were obtained. The structure analysis based on the resulting synchrotron powder diffraction data revealed that all compounds crystallize in an orthorhombic unit cell (Cmc2(1), Z = 4) exhibiting the elusive -SeC2H anion, which is unprecedented in a crystalline compound up to now. Elemental analysis and IR spectroscopic data confirm this finding. Upon heating, A(I)SeC(2)H compounds release acetylene based on DSC/TGA experiments resulting in powders with the proposed composition A(2)(I)Se(2)(C-2). The resulting powders were indexed with small cubic unit cells, but a reasonable structural model could not be developed up to now. Upon exposure of A(I)SeC(2)H compounds to water elemental selenium is formed again.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hetzert, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Werker, Melanie UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED orcid.org/0000-0002-6511-6894 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-162238
DOI:	10.1002/anie.201810910
Journal or Publication Title:	Angew. Chem.-Int. Edit.
Volume:	57
Number:	50
Page Range:	S. 16475 - 16480
Date:	2018
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1521-3773
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ALKINYLVERBINDUNGEN VON UBERGANGSMETALLEN; METAL ACETYLIDES A(2)MC(2); TERNARY CARBIDES; M-I; ALKALI; TRANSITION; NA; SELENIUM; COMPLEXES; TELLURIUM Multiple languages Chemistry, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/16223