Na  x  Mg 5− x  Ga 9 , a New Intermetallic Phase as a Link Between Zintl Phases and Metals | Zendy

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Na x Mg 5− x Ga 9 , a New Intermetallic Phase as a Link Between Zintl Phases and Metals

Author(s) -

Nesper Reinhard

Publication year - 1989

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.198900581

Subject(s) - intermetallic , polyhedron , crystallography , zintl phase , phase (matter) , atom (system on chip) , materials science , metal , structure type , electron counting , crystal structure , chemistry , electron , metallurgy , alloy , physics , mathematics , organic chemistry , quantum mechanics , computer science , embedded system , geometry

Na x Mg 5− x Ga 9 crystallizes in a new structure type in which the Ga atoms form a three‐dimensional framework of linked icosahedra and Friauf polyhedra. These two types of polyhedra are typical for intermetallic phases. The compound shows a considerable phase width. The structure determination gives indications that, despite the metallic properties, variable electron numbers cause local changes of the chemical bonding which only take place at a single terminally bound Ga atom.

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