1-B and 2-B, respectively (ΔG°296 = 2.3 kcal/mol for 1; ΔG°296 > 2.3 kcal/mol for 2). The thermodynamically less stable isomers can be prepared photochemically. Interconversions between 1-A and 1-B and between 2-A and 2-B occur both thermally and photochemically. Kinetic studies on the thermal isomerizations in solution provide ΔG⧧298= 23 ± 1 kcal/mol, ΔH⧧298= 23 ± 1 kcal/mol, and ΔS⧧298= 1 ± 4 cal/mol·deg
二
铁羰基物种对共轭的π
配体haptotropic重排(μ 2,η 3:η 5 -acenaphthylene)的Fe 2(CO)5(1)和它的类似物(μ 2,η 3:η 5 -aceanthrylene)研究了Fe 2(CO)5(2)的溶液状态和固态状态。二
铁配合物1和2具有两个异构体,并且每种异构体均被分离和表征。异构体1-A和2-A在热力学上比1-B和B更稳定分别为2-B(ΔG ° 296 = 2.3 kcal / mol于1 ; ΔG ° 296 > 2.3 kcal / mol于2)。热力学上不稳定的异构体可以通过光
化学方法制备。之间的互1-A和1-B和之间2-A和2-B发生热和光
化学。在溶液中的热异构化动力学研究提供Δ ģ ⧧ 298 = 23±1千卡/摩尔,Δ ħ ⧧ 298 = 23±1千卡/摩尔,和Δ小号⧧ 298= 1±4卡/摩尔·度为的反应1-B至1-A ,和Δ ģ ⧧