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- Q4545828 subject Q52369.
- Q4545828 abstract "[1.1.1]Propellane is an organic compound, the simplest member of the propellane family. It is a hydrocarbon with formula C5H6 or C2(=CH2)3. The molecular structure consists of three rings of three carbon atoms each, sharing one C-C bond.[1.1.1]Propellane is a highly strained molecule. The bonds of the two central carbon atoms have an inverted tetrahedral geometry, and the length of the central bond is 160 pm. The strength of that bond is disputed; estimates vary from 59–65 kcal/mol to no strength at all. The energy of the biradical state (without the central bond and unfilled central carbons) is calculated to be 80 kcal/mol higher. The compound is highly unstable, and at 114 °C it will spontaneously isomerize to 3-methylidenecyclobutene with a half-life of 5 minutes. Its strain energy is estimated to be 102 kcal/mol (427 kJ/mol).The type of bonding in this molecule has been explained in terms of charge-shift bonding".
- Q4545828 iupacName "Tricyclo[1.1.1.01,3]pentane".
- Q4545828 thumbnail 1.1.1-propellane.svg?width=300.
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- Q4545828 iupacname "Tricyclo[1.1.1.01,3]pentane".
- Q4545828 name "[1.1.1]Propellane".
- Q4545828 type ChemicalCompound.
- Q4545828 type ChemicalSubstance.
- Q4545828 type ChemicalObject.
- Q4545828 type Thing.
- Q4545828 type Q11173.
- Q4545828 comment "[1.1.1]Propellane is an organic compound, the simplest member of the propellane family. It is a hydrocarbon with formula C5H6 or C2(=CH2)3. The molecular structure consists of three rings of three carbon atoms each, sharing one C-C bond.[1.1.1]Propellane is a highly strained molecule. The bonds of the two central carbon atoms have an inverted tetrahedral geometry, and the length of the central bond is 160 pm.".
- Q4545828 label "1.1.1-Propellane".
- Q4545828 depiction 1.1.1-propellane.svg.
- Q4545828 name "[1.1.1]Propellane".