Affiliation:
1. Department of Chemistry and Center for Computational Chemistry, The University of Georgia, Athens, GA 30602–2556, USA.
Abstract
Dative, or nonoxidative, ligand coordination is common in transition metal complexes; however, this bonding motif is rare in compounds of main group elements in the formal oxidation state of zero. Here, we report that the potassium graphite reduction of the neutral hypervalent silicon-carbene complex L:SiCl
4
{where L: is:C[N(2,6-Pr
i
2
-C
6
H
3
)CH]
2
and Pr
i
is isopropyl} produces L:(Cl)Si–Si(Cl):L, a carbene-stabilized bis-silylene, and L:Si=Si:L, a carbene-stabilized diatomic silicon molecule with the Si atoms in the formal oxidation state of zero. The Si-Si bond distance of 2.2294 ± 0.0011 (standard deviation) angstroms in L:Si=Si:L is consistent with a Si=Si double bond. Complementary computational studies confirm the nature of the bonding in L:(Cl)Si–Si(Cl):L and L:Si=Si:L.
Publisher
American Association for the Advancement of Science (AAAS)
Reference35 articles.
1. Chemistry of Hypervalent Compounds 1999
2. Tetramesityldisilene, a Stable Compound Containing a Silicon-Silicon Double Bond
3. A Stable Compound Containing a Silicon-Silicon Triple Bond
4. The Chemistry of Organic Silicon Compounds Volume 2 1998
5. The Chemistry of Organic Silicon Compounds Volume 3 2001
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683 articles.
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