TY  - JOUR
A1  - Tacke, Reinhold
A1  - Lopez-Mras, A.
A1  - Becht, J.
A1  - Sheldrick, W. S.
T1  - Synthese sowie Kristall- und Molekülstruktur von Tetrafluoro[2-(pyrrolidinio)ethyl]silicat
T1  - Synthesis and Crystal and Molecular Structure of Tetrafluoro[2-(pyrrolidinio)etbyl]silicate
N2  - Das zwitterionische Tctratluoro[2-(pyrrolidinio) ethyl]silicat (4) wurde durch Reaktion von Trimethoxy( 2-pyrrolidinoethyl)silan (5) mit Fluorwasserstoff in einem Ethanol/Flußsäure-Gemisch bei 0 °C synthetisiert. Die Kristall- und Molekülstruktur von 4 wurde bei - 100 °C mittels einer Einkristall-Röntgenstrukturanalyse untersucht. Außerdem wurde 4 durch NMR-Untersuchungen in Lösung charakterisiert (CD\(_3\)CN: \(^1\)H, \(^{13}\)C).
N2  - The zwitterionic tetrafluoro[2-(pyrrolidinio) ethyl]silicate (4) was synthesized by reaction of trimethoxy( 2-pyrrolidinoethyl)silane (5) with hydrogen fluoride in elhanollhydrofluoric acid at 0 °C. The crystal and mo1ecular structure of 4 was studied at - 100 °C by singlc-crystal X-ray diffraction. ln addition, 4 was characterized by solution-state NMR sturlies (CD\(_3\)CN: \(^1\)H, \(^{13}\)C).
KW  - Anorganische Chemie
KW  - Zwitterionic
KW  - Lambda5-organofluorosilicate
KW  - pentacoordinate silicon
KW  - crystal structure
Y1  - 1993
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-64269
ER  - 
TY  - JOUR
A1  - Tacke, Reinhold
A1  - Becht, J.
A1  - Lopez-Mras, A.
A1  - Sheldrick, W. S.
A1  - Sebald, A.
T1  - Syntheses, X-ray crystal structure analyses, and solid-state NMR studies of some zwitterionic organofluorosilicates
N2  - No abstract available
KW  - Anorganische Chemie
Y1  - 1993
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-64272
ER  - 
TY  - JOUR
A1  - Tacke, Reinhold
A1  - Becht, J.
A1  - Mattern, G.
A1  - Kuhs, W. F.
T1  - Zur Existenz zwitterionischer \(\lambda_5\)-(Ammonioorganyl)tetrafluorosilicate: Synthese sowie Kristall- und Molekülstruktur von Tetrafluoro(pyrrolidiniomethyl)silicat
T1  - On the Existence of Zwitterionic \(\lambda_5\)-(Ammonioorganyl)tetrafluorosillcates: Synthesis and Crystal and Molecular Structure of Tetrafluoro(pyrrolidiniomethyl)silicate
N2  - The zwitterionic tetrafluoro(pyrrolidiniomethyl)silicate (6) was synthesized by the reaction of trimethoxy(pyrrolidinomethyl) silane (7) with hydrogen fluoride in ethanol/hydrofluoric acid (yield 83%). 6 crystallizes in the space group P2\(_1\)fc with two crystallographically distinct molecules in the asymmetric unit. In both molecules the pentacoordinate silicon atom is surrounded by four fluorine atoms and one carbon atom, the latter being in an equatorial position. The coordination polyhedron of the silicon atoms can be described as a slightly distorted trigonal bipyramid. The zwitterionic structure was also proved for dissolved 6 (solution in CD\(_3\)CN, NMRspectroscopic studies).
KW  - Anorganische Chemie
KW  - Fluorosilicates
KW  - zwitterionic
KW  - Pentacoordinate silicon
Y1  - 1992
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-64217
ER  -