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Synthesis of Five‐ and Six‐Coordinate Tris(pentafluoroethyl)fluorosilicates
Author(s) -
Steinhauer Simon,
Stammler HansGeorg,
Neumann Beate,
Ignat'ev Nikolai,
Hoge Berthold
Publication year - 2014
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.201308059
Subject(s) - tris , chemistry , medicinal chemistry , silicon , stereochemistry , organic chemistry , biochemistry
The research area of perfluoroalkylsilanes is still in its infancy. Although there are already many examples of difluorotriorganylsilicates, the first example of a completely characterized trifluorotriorganylsilicate is presented, the dianion [Si(C 2 F 5 ) 3 F 3 ] 2− . The strongly electron‐withdrawing influence of the pentafluoroethyl groups appears to be a fundamental cause of the stability of this compound. This dianion is also the first structurally characterized example of a tris(pentafluoroethyl)silicon compound. The synthesis and complete characterization of [PPh 4 ] 2 [Si(C 2 F 5 ) 3 F 3 ] and [PPh 4 ][Si(C 2 F 5 ) 3 F 2 ] along with the precursor [H(OEt 2 ) 2 ][Si(C 2 F 5 ) 3 F 2 ] was achieved from SiCl 4 and LiC 2 F 5 .