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
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Building a Quintuple Bond
TL;DR: Nguyen et al. as mentioned in this paper used functional groups that bond with chromium in such a way that the chromium atoms can form quintuple bonds with each other, which opens the way for more novel multiple bond chemistry and will provide plenty of food for thought for experimentalists and theoreticians alike.
Journal ArticleDOI
Group 14 inorganic hydrocarbon analogues
TL;DR: In addition to expanding the general knowledge with respect to periodic trends, inorganic Group 14 hydrides have a prominent role in industry as gaseous, and now liquid-phase, precursors to semi-conducting films; furthermore, these species have been successfully used to prepare nanomaterials of controllable shape and function.
Journal ArticleDOI
Interconnected bis-silylenes: a new dimension in organosilicon chemistry.
TL;DR: The synthesis of interconnected bis-silylenes is described and their potential as a new building block in organosilicon chemistry is assessed.
Journal ArticleDOI
Access to a stable Si2N2 four-membered ring with non-Kekulé singlet biradical character from a disilyne.
TL;DR: The reactions of 2 with methanol and carbon tetrachloride show that 2 has both closed-shell and radical-type reactivity, and the molecular structure of 2 was characterized by NMR spectroscopy and X-ray crystallography, revealing that2 has a planar centrosymmetric Si( 2)N(2) four-membered ring.
Journal ArticleDOI
Ab initio quantum chemistry calculations on the electronic structure of heavier alkyne congeners: diradical character and reactivity.
TL;DR: The electronic structure of the heavier congeners of alkynes has been studied with emphasis on characterizing their extent of diradical character, and there appears to be very little energy penalty for large geometric distortions that convert from one ordering to the other on the singlet surface.
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.