Preparation, Characterization, and Crystal Structures of the SO3NHF− and SO3NF2− Ions
作者:Ralf Haiges、Ross Wagner、Jerry A. Boatz、Muhammed Yousufuddin、Markus Etzkorn、G. K. Surya Prakash、Karl O. Christe、Robert D. Chapman、Mark F. Welker、Charles B. Kreutzberger
DOI:10.1002/anie.200601020
日期:2006.8.4
Fokin,A.V. et al., Doklady Chemistry, 1969, vol. 186, p. 350 - 353
作者:Fokin,A.V. et al.
DOI:——
日期:——
Thermal decomposition of 2,2-bis(difluoroamino) propane studied by FTIR spectrometry and quantum chemical calculations: the primary dissociation kinetics and the mechanism for decomposition of the (CH3)2CNF2 radical
Abstract The kinetics of the thermal decomposition of 2,2-bis(difluoroamino) propane (BDFP) has been studied by pyrolysis/FTIR spectrometry at temperatures between 528 and 553 K using toluene as radical scavenger. The disappearance of BDFP was found to follow the first-order kinetics with the rate constant, k 1 =10 16.0±0.7 exp [−(24200±840)/T] s −1 , which agrees closely with the expression obtained
摘要 2,2-双(二氟氨基)丙烷 (BDFP) 的热分解动力学已通过热解/FTIR 光谱法在 528 至 553 K 之间的温度下使用甲苯作为自由基清除剂进行了研究。BDFP 的消失遵循一级动力学,速率常数 k 1 =10 16.0±0.7 exp [-(24200±840)/T] s -1 ,这与 Fokin 等人得到的表达式非常吻合阿尔。[多克尔。阿卡德。诺克。332 (1993) 735], k 1 =10 15.60 exp (-23600/T) s -1 。测得的大 A 因子支持较早的结论,即初级碎裂过程对应于两个 NF 2 组之一的断裂。测量的活化能也与预测的第一 CN 键解离能一致,44-48 kcal/mol,通过混合密度泛函理论和通过拟合观察到的速率常数 47.9 kcal/mol 的变分 RRKM 计算评估的结果。预计 2-二氟氨基丙基 (CH 3 ) 2 CNF 2
Triphenylmethyldifluoramine: a stable reagent for the synthesis of gem-bis(difluoramines)
作者:G. K. Surya Prakash、Markus Etzkorn、George A. Olah、Karl O. Christe、Stefan Schneider、Ashwani Vij
DOI:10.1039/b203811k
日期:——
The conversion of ketones into geminal bis(difluoramines) can be achieved under mild two-phase reaction conditions by employing triphenylmethyldifluoramine as an in situ source of difluoramine.