一个搅动不安
发表于 2025-3-30 12:09:57
The Contrasting Strain Energies of Small Ring Carbon and Silicon Rings. The Relationship with free opropane. Silicon rehybridization on bonding is much less, and SiH bond stengthening does not compensate for SiSi bond weakening. The CH bond dissociation energies, which are uniquely high in cyclopropane, provide support for this interpretation.
强制令
发表于 2025-3-30 14:45:32
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异教徒
发表于 2025-3-30 17:31:39
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moribund
发表于 2025-3-31 00:45:21
A Theoretical Approach to Substituent Effects in Radical Chemistry,approach to the electronic structure and react vity of chemical species allowed us to generalize the Linnett theory and to describe the mechanism of various processes involving free radicals. We have also proposed a general definition of the concept of stabilization energy applying to any compound.
Intersect
发表于 2025-3-31 04:23:17
Sigma and PI Effects in Radicals, electron sigma bond energies are found to be strongly dependent on the energy match between the interacting orbitals. Odd electron pi-bonds are strong for radical ions involving first row elements, but weak for neutral radicals and bonds between second row elements. The principles deduced from thes
Collision
发表于 2025-3-31 07:59:41
The Contrasting Strain Energies of Small Ring Carbon and Silicon Rings. The Relationship with free he latter and rehybridization in the former. The weakness of the CC bonds in cyclopropane is compensated somewhat by CH bond strengthening. In silicon rings, angle deformation effects dominate, and trisilacyclopropane is much more strained than tetra- silacyclobutane and even more strained than cycl
diabetes
发表于 2025-3-31 13:10:32
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阻塞
发表于 2025-3-31 14:58:23
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doxazosin
发表于 2025-3-31 19:59:26
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MULTI
发表于 2025-4-1 00:27:23
ESR-Spectroscopical Investigation of Capto-Dative Substituent Effects in Benzyl Radicals,ed in terms of substituent-induced spin delocalization. On the basis of the dependence of radical stabilization on spin delocalization it is concluded that capto-dative substitution implies a synergetic substituent effect on radical stabilization, whereas antagonistic effects are observed in the cas