Vacuum Pyrolysis−Matrix Isolation FTIR and Density Functional Theoretical Studies of Transient Dimethylgermanone, (CH<sub>3</sub>)<sub>2</sub>GeO
作者:Valery N. Khabashesku、Sergei E. Boganov、Konstantin N. Kudin、John L. Margrave、Oleg M. Nefedov
DOI:10.1021/om9806803
日期:1998.11.1
germene (CH3)2GeCH2 (9) and acrolein from 2 and of isopropenyl methyl ketone from 3 have also been observed, providing evidence for a new route of the thermal decomposition of epoxides 2 and 3. Vibrational assignments of the spectral bands, attributed to germanone 1 and its cyclodimer 6, have been done by comparison with the density functional theory B3LYP/6-311G(d,p) calculated harmonic frequencies and
瞬态有机锗酮(CH 3)2 Ge O(1)是由3,3-二甲基-6-氧杂-3-germabicyclo [3.1.0]己烷(2)及其1,3的三种前体通过真空热解生成的。1,3,5-四甲基类似物(3)和八甲基环四锗烷(4),并通过FTIR光谱在12 K的氩气低温固态基质中直接观察到。的不稳定的二聚体1四甲基-1,3- cyclodigermoxane(6)已在基质隔离热解产物的光谱被初步确定从2 - 4。瞬态生殖烯(CH 3)2的产生葛CH 2(9)和由丙烯醛2和从异丙烯基甲基酮的3也已经观察到,对于环氧化物的热分解的新路径提供证据2和3。光谱带的振动分配,归因于锗烷1及其环二聚体6通过与密度泛函理论B3LYP / 6-311G(d,p)的比较计算得出谐波频率和红外强度,并通过振动可视化和计算每个正常模式的势能分布(PED)进行了比较。实验和计算频率与观察到的锗自然丰度引起的Ge O和Ge-C