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High‐Pressure Synthesis and Characterization of the Alkali Diazenide Li 2 N 2
Author(s) -
Schneider Sebastian B.,
Frankovsky Rainer,
Schnick Wolfgang
Publication year - 2012
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.201108252
Subject(s) - surprise , alkali metal , antibonding molecular orbital , lithium (medication) , characterization (materials science) , character (mathematics) , type (biology) , physics , chemistry , information retrieval , computer science , materials science , nanotechnology , mathematics , organic chemistry , psychology , geology , nuclear physics , geometry , social psychology , paleontology , psychiatry , atomic orbital , electron
Diazenide surprise : The synthesis of an alkali diazenide, Li 2 N 2 , is presented. Lithium diazenide adopts an unprecedented structure type for compounds with A 2 B 2 composition (see picture). Spectroscopic analysis shows a significant feature at 1328 cm −1 which is assigned to the stretching vibration of the [N 2 ] 2− ion. Electronic structure calculations underline the metallic character and confirm the 50 % occupation of the antibonding π states in [N 2 ] 2− .