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Methylcyclopentadiene is any of three isomeric cyclic dialkenes with the formula C 5 MeH 5 (Me = CH 3).These isomers are the organic precursor to the methylcyclopentadienyl ligand (C 5 H 4 Me, often denoted as Cp′), commonly found in organometallic chemistry.
NiCl 2 + 2 NaC 5 H 5 → Ni(C 5 H 5) 2 + 2 NaCl Organometallic complexes that include both the cyclopentadienyl anion and cyclopentadiene itself are known, one example of which is the rhodocene derivative produced from the rhodocene monomer in protic solvents .
Di-tert-butylcyclopentadiene is an organic compound with the formula (Me 3 C) 2 C 5 H 4, where Me = methyl.It is a colorless liquid that is soluble in organic solvents. The compound is the conjugate acid of the di-tert-butylcyclopentadienyl ligand, (Me 3 C) 2 C 5 H 3 − [1] (sometimes abbreviated Cp ‡−).
2,3-pentadiene, H 3 C−CH=C=CH−CH 3, with two enantiomers (R and S). [5] It and 1,2-pentadiene are the least common isomers of pentadiene. Well known derivatives containing pentadiene groups include hexadienes , cyclopentadiene , and especially three fatty acids linoleic acid , α- linolenic acid , and arachidonic acid as well as their ...
2 t Bu − 3. These ligands are so large that their complexes behave differently from the pentamethylcyclopentadienyl analogues. Because they cannot closely approach the metal, these bulky ligands stabilize high spin complexes, such as (C 5 H 2 t Bu 3) 2 Fe 2 I 2. These large ligands stabilize highly unsaturated derivatives such as (C 5 H 2 t ...
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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The central ring can serve as a diene in Diels–Alder reactions with various dienophiles. For example, reaction with benzyne leads to 1,2,3,4-tetraphenylnaphthalene and reaction with diphenylacetylene leads to hexaphenylbenzene. [5] In this way, it is a precursor to graphene-like molecules, [6] such as coronene.