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Preparation and Structures of Salts with the Anions of IF 2 − , ClF 4 − IF 4 − , TeF 7 − , and AsF 4 −
Author(s) -
Zhang Xiongzhi,
Seppelt Konrad
Publication year - 1997
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19976230178
Subject(s) - tetramethylammonium , ion , crystallography , crystallinity , crystal structure , chemistry , crystal twinning , x ray crystallography , crystal (programming language) , inorganic chemistry , physics , diffraction , organic chemistry , programming language , microstructure , computer science , optics
Single crystal structures are presented for the IF 2 − , ClF 4 − , IF 4 − , TeF 7 − , and AsF 4 − fluoroanions. The 1,1,3,3,5,5 hexamethylpiperidinium (pip + ) ion was used as cation in order to obtain good crystallinity and to avoid twinning and disorder which are notorious with the tetramethylammonium ion. Precise structural data are obtained for the first time, and the ions have the expected geometries. The pip + has the further advantage that cation‐anion interactions are weak, which results in fairly ideal structures of the anions. Pip + BrF 2 − is too unstable to be obtained in single crystal form, and pip + BrOF 4 − as well as NO + BrOF 4 − show disordered anions and cations.