A Triatomic Silicon(0) Cluster Stabilized by a Cyclic Alkyl(amino) Carbene

Kartik Chandra Mondal; Sudipta Roy; Birger Dittrich; Diego M Andrada; Gernot Frenking; Herbert W Roesky

doi:10.1002/anie.201511019

A Triatomic Silicon(0) Cluster Stabilized by a Cyclic Alkyl(amino) Carbene

Angew Chem Int Ed Engl. 2016 Feb 24;55(9):3158-61. doi: 10.1002/anie.201511019. Epub 2016 Jan 28.

Authors

Kartik Chandra Mondal¹, Sudipta Roy², Birger Dittrich³, Diego M Andrada⁴, Gernot Frenking⁵, Herbert W Roesky⁶

Affiliations

¹ Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany. csdkartik@iitm.ac.in.
² Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany.
³ Anorganische Chemie und Strukturchemie II, Heinrich-Heine Universität Düsseldorf, Gebäude 26.42.O1.21, Universitätsstraße 1, 40225, Düsseldorf, Germany. dittrich@hhu.de.
⁴ Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany.
⁵ Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany. frenking@chemie.uni-marburg.de.
⁶ Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077, Göttingen, Germany. hroesky@gwdg.de.

PMID: 26821613
DOI: 10.1002/anie.201511019

Abstract

Reduction of the neutral carbene tetrachlorosilane adduct (cAAC)SiCl4 (cAAC=cyclic alkyl(amino) carbene :C(CMe2)2 (CH2)N(2,6-iPr2C6H3) with potassium graphite produces stable (cAAC)3Si3, a carbene-stabilized triatomic silicon(0) molecule. The Si-Si bond lengths in (cAAC)3Si3 are 2.399(8), 2.369(8) and 2.398(8) Å, which are in the range of Si-Si single bonds. Each trigonal pyramidal silicon atom of the triangular molecule (cAAC)3Si3 possesses a lone pair of electrons. Its bonding, stability, and electron density distributions were studied by quantum chemical calculations.

Keywords: carbenes; clusters; density functional calculations; pi acceptors; silicon.

Publication types

Research Support, Non-U.S. Gov't