YAlC: A Bonding Chameleon with Heteropolyacetylene Features

Autor:	Reinhard Nesper, Eduardo Cuervo-Reyes, Martin R. Kotyrba
Rok vydání:	2015
Předmět:	Flux method Chemistry Inorganic chemistry Intermetallic chemistry.chemical_element General Chemistry Yttrium General Medicine Catalysis Carbide Ion Crystallography Covalent bond Substructure Ternary operation
Zdroj:	Angewandte Chemie. 127:9742-9745
ISSN:	0044-8249
DOI:	10.1002/ange.201501356
Popis:	YAlC was prepared by a flux method. It crystallizes as a partially filled-up TlI structure, showing remarkable structural aspects at the border between Zintl phases and intermetallics. This novel ternary aluminide–carbide exhibits a unique one-dimensional multi-center bond and a polyacetylene-related aluminum carbide substructure. The different functionalities of aluminum and of yttrium are quite remarkable. While the latter behaves more like a trivalent ion, aluminum contributes considerably to covalent bonding with carbon. Still yttrium d states contribute, but hardly in a directed manner.
Databáze:	OpenAIRE
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