Filters
Results 1 - 1 of 1
Results 1 - 1 of 1.
Search took: 0.025 seconds
AbstractAbstract
[en] Hf2Te was prepared by arc-melting appropriate compressed mixtures of HfTe2 and hafnium. The structure of the new hafnium-rich telluride was determined by means of powder diffractometry, RB=0.0565. Hf2Te adopts a Nb2Se-type structure, monoclinic, space group C2/m, Z=8, Pearson symbol mS24, a=1516.3(2) pm, b=370.26(4) pm, c=1006.4(1) pm, β=90.50(1) . The structure comprises pairwise interpenetrating columns of trans-face-shared centred Hf9 cuboids. The columns form puckered slabs which are interconnected by homo- and heteronuclear bonds. Tellurium atoms are one-sidedly coordinated by six hafnium atoms. The coordination configurations about the two distinct tellurium atoms represent Hf6Te hypho-fragments of a tri-capped trigonal prismatic Hf9Te closo-cluster. Characteristic features of four other M2Q structure types are elucidated. The valence electron concentration available for metal-metal bonding together with the cohesive energy of the respective metal are found to control the formation of the various M2Q metal partial structures. (orig.)
Primary Subject
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue