The Phase Transition of Quaternary Fluoroalkyl Halide Salts of 1,4-Diazabicyclo[2.2.2]octane
作者： Tohru Terada , Takashi Nogami , Yasuhiko Shirota
DOI: 10.1246/BCSJ.62.2793
关键词: Chemistry 、 Alkyl 、 Polymer chemistry 、 Molecule 、 Ionic conductivity 、 Halide 、 Octane 、 DABCO 、 Salt (chemistry) 、 Organic chemistry 、 Bicyclic molecule 、 General chemistry
摘要: The solid–solid phase transition of quaternary halide salts 1,4-diazabicyclo[2.2.2]octane (DABCO) was investigated by DSC, Raman spectroscopies, and the measurements ionic conductivity anions. DABCO studied are classified into two; one is salt possessing both fluoroalkyl alkyl groups, other ones same groups at ends molecule. former molecule exhibited a gradual increase above temperature. higher than that latter molecules symmetric DABCO. These facts were explained spacer effect group. temperature dependence spectra established group much more rigid group, molecular movement took place mainly portion in high phase. ...
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