cyclopentadiene


Also found in: Acronyms, Encyclopedia, Wikipedia.

cyclopentadiene

(ˌsaɪkləʊˌpɛntəˈdaɪiːn)
n
(Elements & Compounds) a colourless liquid unsaturated cyclic hydrocarbon obtained in the cracking of petroleum hydrocarbons and the distillation of coal tar: used in the manufacture of plastics and insecticides. Formula: C5H6
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Translations
ciclopentadiene
Mentioned in ?
References in periodicals archive ?
AIE-active C8 molecules with a concentration of 1.2 x [10.sup.-3] M showed a strong and broad absorption peak centered at 363 nm, which is an electronic [pi]-[[pi].sup.*] transition of the cyclopentadiene ring [23].
Dimetallic cyclopentadiene compounds can theoretically be used as catalysts for various reactions common in industrial settings.
Two cyclopentadiene rings fixed to the metal is characteristic of this kind of catalyst.
By activating the compound hafnocene (a complex of hafnium metal ions with cyclopentadiene and chlorine ligands) to react with [N.sub.2] by switching the chlorine for iodine, the [N.sub.2] becomes complexed between two hafnocenes, effectively reducing the triple bond to a single bond.
For example, in the reaction of cyclopentadiene and acrylonitrile on silica we obtained 62% of the endo adduct and 38% of the exo adduct.
On the Ti-TADDOLate-catalyzed Diels-Alder addition of 3-butenoyl-1,3-oxazolidin-2-one to cyclopentadiene. General features of Ti-BINOLate- and Ti-TADDOLate-mediated reactions.