TY  - JOUR
A1  - Tacke, Reinhold
A1  - Wiesenberger, Frank
A1  - Lopez-Mras, Angel
A1  - Sperlich, Jörg
A1  - Mattern, Günter
T1  - Neuartige zwitterionische λ5-Spirosilicate: Synthese und Kristallstruktur von Bis[1,2-benzoldiolato(2-)][2-(dimethylammonio)phenyl]silicat sowie Synthese von Bis[2,3-naphthalindiolato(2-)][2-(dimethylammonio)phenyl]silicat-Hemiacetonitril-Solvat
N2  - No abstract available.
KW  - Silicate
KW  - Bis[1,2-benzenediolato(2-)][2-(dimethylammonio)phenyl]silicate
KW  - Bis[2,3-naphthalenediolato(2-)][2-(dimethylammonio)phenyl]silicate
KW  - zwitterionic λ5-Spirosilicates
Y1  - 1992
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86916
ER  - 
TY  - JOUR
A1  - Tacke, Reinhold
A1  - Sperlich, Jörg
A1  - Strohmann, Carsten
A1  - Frank, Brigitta
A1  - Mattern, Günter
T1  - Bis[3,4,5,6-tetrabrom-1,2-benzoldiolato(2-)]-(pyrrolidiniomethyl)silicat-Acetonitril-Solvat [(C6Br4O2)2SiCH2(H)NC4H8 · CH3CN]: Synthese sowie Kristall- und Molekülstruktur eines zwitterionischen [lambda]5-Spirosilicats
N2  - Single crystal X-ray studies on bis[3,4,5,6-tetrabromo-1 ,2-benzenediolato(2- )](pyrrolidiniomethyl)silicate acetonitrile solvate [(C6Br40 2hSiCH2(H)NC4H8 · CH3CN; monoclinic, P2t/c, a = 808.5(4), b = 1533.0(8), c = 2212.6(1) pm, ß = 97.67(2)0 , Z = 4] revealed a  zwitterionic structure with a pentacoordinate, formally negatively charged silicon atom and a positively charged ammonium moiety. The silicon atom is surrounded by four oxygen atoms and one carbon atom in a trigonalbipyramidal fashion, with the carbon atom in an equatorial position. The structure is displaced by 7.0% from the trigonal bipyramid towards the square pyramid. The zwitterion and the CH3CN molecule form intermolecular N-H · · · N hydrogen bonds.
KW  - Kristallstruktur
KW  - Spirosilicate
KW  - crystal structure
KW  - zwitterionic spirosilicate
Y1  - 1992
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86884
ER  - 
TY  - JOUR
A1  - Sperlich, Jörg
A1  - Becht, Joachim
A1  - Mühleisen, Mathias
A1  - Wagner, Stephan A.
A1  - Mattern, Günter
A1  - Tacke, Reinhold
T1  - Zwitterionische Bis[vic-arendiolato(2-)][(morpholinio)alkyl]silicate: Synthese sowie strukturelle Charakterisierung in Lösung und im Kristall
N2  - No abstract available.
KW  - Silicate
KW  - Bis[1,2-benzendiolato(2-)][(morpholinio)alkyl]silicates
KW  - Bis[2,3-naphthalenediolato(2-)][(morpholinio)alkyl]silicates
KW  - Zwitterionic [lambda]5-Spirosilicates
Y1  - 1993
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-73153
ER  -