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The C 4 ring of the cis isomer of CBDO is non-planar. For simple non-planar cyclobutanes, dihedral angles range from 19 to 31°. CBDO’s cis isomer crystallizes as two conformers with an average dihedral angle of 17.5° in the solid state. [6] However, the trans isomer has a dihedral angle of 0°. [7]
It can be prepared by base-catalyzed isomerization of 2,3-dimethyl-1-butene. [2] Another route involves direct dimerization of propylene. [3] It can also be produced by photolysis of tetramethylcyclobutane-1,3-dione. [4]
5-Decyne, also known as dibutylethyne, is a type of alkyne with a triple bond at its fifth carbon (the '5-' indicates the location of the triple bond in the chain). Its formula is C 10 H 18 . Its density at 25 °C and otherwise standard conditions is 0.766 g/ml. [ 1 ] The boiling point is 177 °C. [ 2 ]
1,2,3,4,5-Pentakis(4-butylphenyl)-1,3-cyclopentadiene is an organochemical compound from the diene group and a cyclopentadiene derivative. The anion of this compound is used as a sterically demanding ligand, often abbreviated as Cp [BIG] , in the organometallic chemistry of sandwich compounds .
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[9] The other method is to further remove hydrogens and develop triple bonds or cyclopropanes along the ring. Thus computational studies suggest that cyclodecatetraeneyne is (although formally a 12-π system) planar and aromatic, [10] as is bicyclo[8.1.0]undeca-1,3,7,9-tetraen-5-yne. [11]
Tetraphenylcyclopentadienone is an organic compound with the formula (C 6 H 5 C) 4 C 4 C=O. It is classified as a cyclic dienone. It is a dark purple to black crystalline solid that is soluble in organic solvents. It is an easily made building block for many organic and organometallic compounds.