نتایج جستجو برای: strained molecules
تعداد نتایج: 198218 فیلتر نتایج به سال:
ab initio calculation at hf/6-31g* level of theory for geometry optimization and mp2/6-31g*//hf/6-31g* for a single point total energy calculation are reported for the important energyminimumconformations and transition-state geometries of of cyclodeca-1,2,3-triene (1). the mostfavorable conformation of 1 is a unsymmetrical twist-chair (1-tc) structure. degenerateinterconversion of 1-tc with it...
Gold-catalyzed reactions, which have been widely explored over the past several years, are powerful tools in organic synthesis to access complex molecular frameworks, and some corresponding excellent reviews have been reported. However, little attention has been paid to summarize the reactions of strained small-ring-containing molecules catalyzed by gold. This critical review mainly puts its em...
We have used an ab initio SCF molecular orbital approach in conjunction with the isodesmic reaction procedure to investigate anomalous energy effects in strained aza systems and some of their nitro derivatives. The introduction of nitrogens into strained molecular frameworks is found to confer added degrees of stability. In general this increases with the number of nitrogens in a series of simi...
A highlight of the first synthesis 1-azahomocubane and initial studies this molecule (https://doi.org/10.1039/D3SC00001J), presenting opportunities for nitrogen scanning strained hydrocarbon molecules.
The solution deposition of halogenated porphyrins is influenced by the underlying Au(111) substrate. Upon annealing, metalation occurs, and coupling between solvent molecules leads to formation strained frameworks.
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