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Alkali Metal Tetrelide–Tetrelates: “Double Salts” With [E 4 ] 4− Zintl Anions (E=Si, Ge) and the First Dimeric Cyclotrisilicate Ions [Si 6 O 17 ] 10−
Author(s) -
Hoffmann Stefan,
Fässler Thomas F.,
Hoch Constantin,
Röhr Caroline
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20011203)40:23<4398::aid-anie4398>3.0.co;2-9
Subject(s) - alkali metal , ion , silicon , silicate , crystallography , chemistry , germanium , inorganic chemistry , materials science , organic chemistry
The previously unknown silicate ion [Si 6 O 17 ] 10− (c) and mixed‐valent silicon centers that differ by five oxidation states are present in the tetrelide(−1)–tetrelate(+4) compound Cs 10 [Si 4 ][Si 3 O 9 ] (anions a and b) and Rb 14 [E 4 ][Si 6 O 17 ] (E=Si and Ge; anions a and c). The structures of this new class of compounds can be described by chemical twinning of the silicate and Zintl phases A $\rm{^{I}_{4}}$ [E $\rm{^{IV}_{4}}$ ].