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Cover Picture: ZAAC ‐ Journal of Inorganic and General Chemistry 4/2016
Publication year - 2016
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201690003
Subject(s) - cover (algebra) , simple (philosophy) , intermetallic , ternary operation , citation , crystallography , chemistry , computer science , library science , philosophy , organic chemistry , engineering , mechanical engineering , alloy , epistemology , programming language
The cover picture shows even complex structures can be traced back to the very simple ones. For the new intermetallic compound Ta 7 Cu 10 Ga 34 there is a simple relation to bcc or CsCl type as a 8 × 4 × 2 super structure described by two steps. The first one is a 45° rotation of a Ga 8 cube. The second one is the formation of an orders defect variant: 64 × CsCl → M 64 M ′ 64 → Ta 14 Cu 20 Ga 4 □ 26 Ga 64 → 2 × Ta 7 Cu 10 Ga 34 . Similar principles were already found for other ternary gallium‐rich intermetallics with Cu and a group 5 transition metal. So the structure of Ta 7 Cu 10 Ga 34 continues this series by a new representative with a modified pattern on pp. 350ff.