Universität zu Köln

Werker, Melanie and Ruschewitz, Uwe ORCID: 0000-0002-6511-6894 (2019). Cs2Cd(C2H)(2)(C-2): A Crystalline Acetylide with Bridging C-2 Units. Inorg. Chem., 58 (23). S. 16205 - 16211. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-510X

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Abstract

Cs2Cd(C2H)(2)(C-2) was synthesized by heating known Cs2Cd(C2H)(4) either in a dry argon atmosphere at 200 degrees C or under ammonothermal conditions (130 degrees C, similar to 100 bar). The crystal structure of the resulting dark orange-brown microcrystalline material was solved and refined from synchrotron powder diffraction data (Cmcm, Z = 4). Cs2Cd(C2H)(2)(C-2) is composed of Cd2+ cations tetrahedrally coordinated end-on by four acetylide groups. Two of them are terminating C2H- groups, whereas the other two positions are occupied by bridging C-2(2-) anions. Thus, a polymeric (1)(infinity)[Cd(C2H)(2)(C-2)(2/2)(2-)] chain-like anion results and these chains are separated by Cs+ cations. So obviously Cs2Cd(C2H)(2)(C-2) is formed from Cs2Cd(C2H)(4) by a condensation reaction of two of its four C2H- groups under the release of one acetylene (C2H2) molecule. This reaction mechanism is supported by DSC/TGA measurements, and the crystal structure of Cs2Cd(C2H)(2)(C-2) is further supported by IR spectroscopic investigations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Werker, Melanie UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED orcid.org/0000-0002-6511-6894 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-124885
DOI:	10.1021/acs.inorgchem.9b02730
Journal or Publication Title:	Inorg. Chem.
Volume:	58
Number:	23
Page Range:	S. 16205 - 16211
Date:	2019
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1520-510X
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; TERNARY CARBIDES; NA-CS; M-I; ALKALI; TRANSITION; RB; DIFFRACTION; A(2)MC(2); A(I) Multiple languages Chemistry, Inorganic & Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/12488