Silanylidene and Germanylidene Anions: Valence‐Isoelectronic Species to the Well‐Studied Phosphinidene

The reduction of TipMCl3 (Tip=2,4,6‐triisopropylphenyl) (M=Si, Ge) with KC8 in the presence of cyclic alkyl(amino) carbene (cAAC) afforded the acyclic silanylidene and germanylidene anions in the form of potassium salt [K(cAAC)MTip]2 (M=Si (1); Ge (2)). The silanylidene and germanylidene anions are...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2018-09, Vol.57 (36), p.11776-11780
Main Authors: Siddiqui, Mujahuddin M., Sinhababu, Soumen, Dutta, Sayan, Kundu, Subrata, Ruth, Paul Niklas, Münch, Annika, Herbst‐Irmer, Regine, Stalke, Dietmar, Koley, Debasis, Roesky, Herbert W.
Format: Article
Language:English
Subjects:
Anions
Chemical bonds
Computer applications
Crystal structure
cyclic alkyl(amino) carbenes
Germanium
germanylidene
NMR
Nuclear magnetic resonance
phosphinidene
Potassium
Potassium salts
silanylidene
Silicon
Structural analysis
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Summary:The reduction of TipMCl3 (Tip=2,4,6‐triisopropylphenyl) (M=Si, Ge) with KC8 in the presence of cyclic alkyl(amino) carbene (cAAC) afforded the acyclic silanylidene and germanylidene anions in the form of potassium salt [K(cAAC)MTip]2 (M=Si (1); Ge (2)). The silanylidene and germanylidene anions are valence‐isoelectronic to the well‐studied phosphinidene and are a new class of acyclic anions of Group 14. Compounds 1 and 2 were isolated and well characterized by NMR and single‐crystal X‐ray structure analysis. Furthermore, the structure and bonding of compounds 1 and 2 was investigated by computational methods. Acyclic group 14 anions: Silanylidene and germanylidene potassium salts stabilized by a cyclic alkyl(amino) carbene (cAAC), [(cAAC)KMTip]2 (M=Si,1; Ge, 2), have been synthesized. These anions are isoelectronic to the well‐studied phosphinidene. The structure and bonding of compounds 1 and 2 have been investigated by experimental and theoretical methods.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201805936