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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Journal ArticleDOI
The Structure of the Carbene Stabilized Si2H2 May Be Equally Well Described with Coordinate Bonds as with Classical Double Bonds
Chandrajeet Mohapatra,Subrata Kundu,Alexander N. Paesch,Regine Herbst-Irmer,Dietmar Stalke,Diego M. Andrada,Gernot Frenking,Herbert W. Roesky +7 more
TL;DR: These are the first molecular examples of Si2H2 characterized by single crystal X-ray structural analysis and the structure of compound 1 explains equally well its structure with coordinate bonds as with classical double bonds of a 2,3-disila-1, 3-butadiene.
Journal ArticleDOI
A Helmeted Dialkylsilylene
TL;DR: In this article, a helmeted dialkylsilylene, 2,2,5,5-5-tetrakis(trimethylsilyl)silacyclopentane-1,1-diyl, that was synthesized as the firs...
Journal ArticleDOI
[{2,6-(Me2NCH2)2C6H3}Sn]2: an intramolecularly coordinated diorganodistannyne.
Journal ArticleDOI
Asymmetric Induction in Methyl Ketone Aldol Additions to α-Alkoxy and α,β-Bisalkoxy Aldehydes: A Model for Acyclic Stereocontrol
TL;DR: In this paper, a systematic study of methyl ketone aldol additions under nonchelating conditions with α-alkoxy and α,β-bisalkoxy aldehydes is described.
Journal ArticleDOI
Triple Bonds between Transition Metals and the Heavier Elements of Groups 14 and 15
TL;DR: In the mid-1990s, the first examples of complexes containing triple bonds between transition metals and heavier analogues of the carbon as well as the nitrogen groups were reported, thus signaling the beginning of a new era in organometallic chemistry as discussed by the authors.
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.