The cyclopentadienyl cation is another textbook example of an antiaromatic compound. It is conventionally understood to be planar, cyclic, and have 4 π electrons (4n for n=1) in a …

2024年1月15日 · Coordination of the cyclopentadienyl cation by [Sb3F16]− or C6F6 stabilizes the antiaromatic singlet state in the solid state.

2017年3月27日 · The cyclopentadienyl cation can only be prepared with difficulty, as this paper describes. Once it is formed, it has a triplet electronic ground state (with 2 unpaired electrons), …

Antiaromatic Ions. In a similar fashion, cyclically conjugated ions with 4n pi electrons can be predicted to be antiaromatic and therefore highly unstable. An excellent example is the …

2017年5月17日 · There are two important configurations of energy levels for 3-membered cyclic pi systems, depending on the number of pi electrons. With two pi electrons, we’d expect an …

Antiaromatic Ions. In a similar fashion, cyclically conjugated ions with 4n pi electrons can be predicted to be antiaromatic and therefore highly unstable. An excellent example is the …

When a hydride anion (H - ) is removed from the s p 3 hybridized ring carbon of cyclopentadiene, the cyclopentadienyl cation will be formed and the hybridization of the s p 3 hybridized ring …

2021年1月1日 · The planar cyclopentadienyl cation is antiaromatic, and while the Cl and phenyl per-substituted analogs have been characterized (as ground state triplets or singlets with low …

2023年1月23日 · Hence, cyclopentadiene (its conjugate base i.e. Cyclopentadienyl anion is aromatic in nature) is much more acidic than cycloheptatriene (its conjugate base i.e. …

The singlet states of cyclopentadienyl (Cp) cations are considered as true prototypes of an antiaromatic system. Unfortunately, their high intrinsic reactivity inhibited their isolation in the …