troposphere. Our studies reveal that at cryogenic temperatures, this equilibration is governed by rare heavy‐atom tunneling. In solid argon at 3 K, 1 rearranges to 2 via tunneling with a rate constant of approximately 5.3×10−5 s−1. Thus, in a nonpolar environment, 2 is slightly more stable than 1, in agreement with calculations at the CCSD(T) level of theory. However, if the argon is doped with 1 % of H2O
苯氧化物(之间的平衡1)和氧杂(2)是大的重要性对于理解在
生物系统和在对流层苯的降解。我们的研究表明,在低温下,这种平衡受罕见的重原子隧穿控制。在3 K的固态
氩气中,1的隧穿以约5.3×10 -5 s -1的速率常数重新排列为2。因此,在非极性环境中,2比1稳定一些,这与CC
SD(T)理论级别的计算一致。但是,如果
氩气掺杂了1%的H 2 O或CF 3在分别作为典型的氢或卤素键供体的情况下,形成了1和2的弱络合物,现在2隧穿回形成1。因此,通过形成非共价复合物,1变得比2稳定,重原子隧穿的方向相反。