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Detection of the Elusive Highly Charged Zintl Ions Si 4 4− and Sn 4 4− in Liquid Ammonia by NMR Spectroscopy
Author(s) -
Neumeier Maria,
Fendt Franziska,
Gärtner Stefanie,
Koch Carina,
Gärtner Tobias,
Korber Nikolaus,
Gschwind Ruth M.
Publication year - 2013
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/anie.201209578
Subject(s) - ion , liquid ammonia , nuclear magnetic resonance spectroscopy , chemistry , silicide , circumstantial evidence , ammonia , spectroscopy , crystallography , analytical chemistry (journal) , silicon , physics , stereochemistry , organic chemistry , political science , quantum mechanics , law
It's detected! The existence of the prototypical Zintl ions Tt 4 4− (Tt=Group 14 element), which are isoelectronic to the P 4 molecule, used to be confined to the solid state. Recently, circumstantial evidence for a solution chemistry in liquid ammonia emerged. Direct spectroscopic observation of the dissolved anions has now been achieved. In the case of Si 4 4− , this is the first solution detection of any homoatomic silicide.