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These isomers are the organic precursor to the methylcyclopentadienyl ligand (C 5 H 4 Me, often denoted as Cp′), commonly found in organometallic chemistry. As with cyclopentadiene , methylcyclopentadiene is prepared by thermal cracking of its Diels–Alder dimer, followed by distillation for removal of cyclopentadiene, a common impurity.
Cyclopentadiene is an organic compound with the formula C 5 H 6. [6] It is often abbreviated CpH because the cyclopentadienyl anion is abbreviated Cp − . This colorless liquid has a strong and unpleasant odor .
1,2,3,4,5-Pentamethylcyclopentadiene is a cyclic diene with the formula C 5 (CH 3) 5 H, often written C 5 Me 5 H, where Me is CH 3. [3] It is a colorless liquid. [1]1,2,3,4,5-Pentamethylcyclopentadiene is the precursor to the ligand 1,2,3,4,5-pentamethylcyclopentadienyl, which is often denoted Cp* (C 5 Me 5) and read as "C P star", the "star" signifying the five methyl groups radiating from ...
Cyclopentene is a chemical compound with the formula (CH 2) 3 (CH) 2. It is a colorless liquid with a petrol-like odor. It has few applications, and thus is mainly used as a minor component of gasoline, present in concentrations of less than 1%. [1] [2] It is one of the principal cycloalkenes.
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 ...
These ligands are more basic and more lipophilic. Replacing methyl groups with larger substituents results in cyclopentadienes that are so encumbered that pentaalkyl derivatives are no longer possible. Well-studied ligands of this type include C 5 R 4 H − (R = iso-Pr) and 1,2,4-C 5 R 3 H 2 − (R = tert-Bu).
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 ‡−).
Trimethylsilyl cyclopentadiene is an organosilicon compound with the chemical formula C 5 H 5 Si(CH 3) 3. It exists as a colorless liquid. It exists as a colorless liquid. It is used in the synthesis of some metal cyclopentadienyl complexes and has attracted interest for its fluxional structure .