Matrix effects in the low-temperature ozonation of ethylene, tetramethylethylene and 1-hexene
作者:U Samuni、Y Haas、R Fajgar、J Pola
DOI:10.1016/s0022-2860(98)00459-1
日期:1998.8
deposited at low temperature, and having an amorphous structure. The reaction was found to start at 26 K, the temperature at which the matrix undergoes a phase transition. In contrast, only tetramethylethylene (TME) was found to react in an argon matrix, the other two compounds remaining inactive towards ozone up to the softening temperature of argon (∼40 K). These results are interpreted as indicating
摘要 在氩气和 CO2 基质中在低温 (12–80 K) 下研究了标题化合物的臭氧化作用。发现所有三种都与低温沉积的 CO2 基质中的臭氧反应,并具有无定形结构。发现反应开始于 26 K,即基质发生相变的温度。相比之下,只有四甲基乙烯 (TME) 被发现在氩气基质中反应,其他两种化合物在氩气软化温度 (~40 K) 之前对臭氧保持惰性。这些结果被解释为表明一旦两种反应物自由移动到所需的配置,烯烃和臭氧之间的反应就会在低温下引发。这个想法得到了 TME 反应的分子动力学模拟的支持。TME初级臭氧化物的红外光谱,
Environmental Effects on the Formation of the Primary and Secondary Ozonides of Ethylene at Cryogenic Temperatures
作者:U. Samuni、R. Fraenkel、Y. Haas、R. Fajgar、J. Pola
DOI:10.1021/ja9532852
日期:1996.1.1
12−20 K. In the argon matrix, no perceptible reaction took place at any temperature below the softening onset of the matrix, while formation of ethylene ozonides (both primary and secondary) was observed at temperatures as low as 25 K in the amorphous CO2 matrix. The ozonides were identified by their infrared spectra, whose assignments were confirmed with the help of an ab initio calculation. The same
乙烯和臭氧共同沉积在 15-26 K 的氩气和 12-20 K 的 CO2 低温基质中。在氩气基质中,在低于基质软化开始的任何温度下都没有发生可察觉的反应,同时形成在低至 25 K 的温度下,在无定形 CO2 基质中观察到亚乙基臭氧化物(初级和次级)。臭氧化物通过它们的红外光谱进行鉴定,其归属在 ab initio 计算的帮助下得到确认。同样的反应在 65 K 下沉积的结晶 CO2 基质中是察觉不到的,只有在 77 K 和更高温度下才能观察到。对固体氩主体进行的分子动力学模拟表明,高度有序的晶体结构不允许反应所需的运动。
Infrared spectrum of the primary ozonide of ethylene in solid xenon
作者:Christopher K. Kohlmiller、Lester Andrews
DOI:10.1021/ja00400a016
日期:1981.5
The ozonolysis of ethylene. Microwave spectrum, molecular structure, and dipole moment of ethylene primary ozonide (1,2,3-trioxolane)
作者:J. Z. Gillies、Charles W. Gillies、R. D. Suenram、F. J. Lovas