Journal ArticleDOI
A stable compound containing a silicon-silicon triple bond.
TLDR
The reaction of 2,2,3,3-tetrabromo-1,1,4, 4,4-tetrakis[bis(trimethylsilyl)methyl]-1, 4-diisopropyltetrasilane with four equivalents of potassium graphite (KC8) in tetrahydrofuran produces 1,1-4,4-, which shows half the magnitude of the bond shortening of alkynes compared with thatAbstract:
The reaction of 2,2,3,3-tetrabromo-1,1,4,4-tetrakis[bis(trimethylsilyl)methyl]-1,4-diisopropyltetrasilane with four equivalents of potassium graphite (KC 8 ) in tetrahydrofuran produces 1,1,4,4-tetrakis[bis(trimethylsilyl)methyl]-1,4-diisopropyl-2-tetrasilyne, a stable compound with a silicon-silicon triple bond, which can be isolated as emerald green crystals stable up to 100°C in the absence of air. The SiSi triple-bond length (and its estimated standard deviation) is 2.0622(9) angstroms, which shows half the magnitude of the bond shortening of alkynes compared with that of alkenes. Unlike alkynes, the substituents at the SiSi group are not arranged in a linear fashion, but are trans-bent with a bond angle of 137.44(4)°.read more
Citations
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Preparation, Structure, and Reactions of a Lattice-Framework Disilene
TL;DR: In this article, a lattice-framework disilene, a racemate of (4R,6R,4‘R, 6R)-and (4S,6S, 4‘S, 6S, S,6 S, 6 S)-cyclopropene, was derived from tri-tert-butyl-3-(tribromosilyl)cyclopropene.
Journal ArticleDOI
[[(Me3Si)2CH]2iPrSi(NHC)Si═Si(Me)SiiPr[CH(SiMe3)2]2]+: A Molecule with Disilenyl Cation Character
TL;DR: Cation 2 has been fully characterized by multinuclear NMR spectroscopy and X-ray diffraction analysis and indicates that there are significant contributions from the NHC-stabilized cationic resonance structure 2A, the disilene- like structure 2B, and even some contribution from the silylene-like structure 2C.
Journal ArticleDOI
Comparative bonding analysis of N2 and P2 versus tetrahedral N4 and P4
Paul Jerabek,Gernot Frenking +1 more
TL;DR: In this paper, the nature of the chemical bonds in E2 and tetrahedral E4 (E = N, P) has been analyzed with the help of an energy decomposition method.
Journal ArticleDOI
Reduction of the dihalocyclopentasilanes. A quest for a homocyclic silylene
TL;DR: Results indicate that a homocyclic silylene intermediate is generated in the reduction of dibromocyclopentasilane, which is not a good protecting group for hindering the 1,2-silyl migration.
Journal ArticleDOI
Reaction Mechanisms of Small-Molecule Activation by Amidoditetrylynes R2N–EE–NR2 (E = Si, Ge, Sn)
TL;DR: Four projects are presented that feature the virtue of cooperation between theory and experiment and the calculated reaction profiles using density functional theory at the BP86/TZVPP level for the reaction of small molecules with amidoditetrylynes R2N-EE-NR2, which were found to be effective catalysts for hydroboration reactions.
References
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BookDOI
The chemistry of organic silicon compounds
Zvi Rappoport,Yitzhak Apeloig +1 more
TL;DR: A.R.Bassindale and P.G.Taylor as mentioned in this paper discussed the photochemistry of organosilicon compounds, A.R., B.B.Birkofer and O.Ojima.
Journal ArticleDOI
π-Bonding and the Lone Pair Effect in Multiple Bonds between Heavier Main Group Elements
Journal ArticleDOI
Tetramesityldisilene, a stable compound containing a silicon-silicon double bond
TL;DR: Irradiation of 2,2-bis(2,4,6-trimethylphenyl)hexamethyltrisilane in hydrocarbon solution produces tetramesityldisilene, which can be isolated as a yellow-orange solid stable to room temperature and above in the absence of air.
Journal ArticleDOI
Synthesis and Characterization of 2,6-Trip2H3C6PbPbC6H3-2,6-Trip2 (Trip = C6H2-2,4,6-i-Pr3): A Stable Heavier Group 14 Element Analogue of an Alkyne
TL;DR: The Stable Heavier Group 14 Element Analogue of an Alkyne (SHE 14) as discussed by the authors is a stable heavier group 14 analogue of an alkyne.