13 relations: Alternant hydrocarbon, Chemical formula, Cross-conjugation, Cyclopropane, Cyclopropene, Cyclopropenone, Fulvene, Fulvenes, Hückel method, Hydrocarbon, Methylene group, Methylenecyclopropane, Polymer.
Alternant hydrocarbon
An alternant hydrocarbon is any conjugated hydrocarbon system which does not possess an odd-membered ring.
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Chemical formula
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
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Cross-conjugation
Cross-conjugation is a special type of conjugation in a molecule, when in a set of three Pi bonds only two pi-bonds interact with each other by conjugation, the third one is excluded from interaction.
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Cyclopropane
Cyclopropane is a cycloalkane molecule with the molecular formula C3H6, consisting of three carbon atoms linked to each other to form a ring, with each carbon atom bearing two hydrogen atoms resulting in D3h molecular symmetry.
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Cyclopropene
Cyclopropene is an organic compound with the formula 34.
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Cyclopropenone
Cyclopropenone is an organic compound with molecular formula C3H2O consisting of a cyclopropene carbon framework with a ketone functional group.
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Fulvene
Fulvene is one of several hydrocarbons with the same formula as benzene, C6H6.
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Fulvenes
Fulvenes are the class of hydrocarbon obtained by formally cross-conjugating one ring and methylidene through a common exocyclic double bond.
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Hückel method
The Hückel method or Hückel molecular orbital method (HMO), proposed by Erich Hückel in 1930, is a very simple linear combination of atomic orbitals molecular orbitals method for the determination of energies of molecular orbitals of π electrons in conjugated hydrocarbon systems, such as ethylene, benzene and butadiene.
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Hydrocarbon
In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.
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Methylene group
In organic chemistry, a methylene group is any part of a molecule that consists of two hydrogen atoms bound to a carbon atom, which is connected to the remainder of the molecule by a double bond.
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Methylenecyclopropane
Methylenecyclopropane is an organic compound with the formula (CH2)2CCH2.
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Polymer
A polymer (Greek poly-, "many" + -mer, "part") is a large molecule, or macromolecule, composed of many repeated subunits.
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