IR spectra, methylene chain vibrations and rotational isomerism of n-alkyl trichloroacetates
作者:Yoshiyuki Mido、Nobuhiro Komatsu、Jesus Morcillo、M.Victoria Garcia
DOI:10.1016/0022-2860(88)87005-4
日期:1988.2
(R′—TCA) in the crystalline state (R′—TCAs with n = 4, 5 in the glassy state) have been studied, End-group (CCl 3 COO—) vibrations have been assigned by referring to the previous results for methyl and ethyl analogs and four methylene band progressions have been analyzed. Interaction between methylene and end group vibrations is discussed. It is suggested that in the crystalline state the nP-TCA ( n
摘要 研究了 10 种三氯乙酸正烷基酯 CCl 3 COO(CH 2 ) n CH 3 (R'-TCA) 的晶体状态(R'-TCA,n = 4, 5 处于玻璃态)的红外光谱,结束-组 (CCl 3 COO-) 振动已通过参考甲基和乙基类似物的先前结果进行分配,并分析了四个亚甲基带级数。讨论了亚甲基和端基振动之间的相互作用。表明在结晶状态下nP-TCA(n=2)分子仅在OCH 2 CH 2 CH 3 基团中采取gauche构象,其他R′-TCA分子相对于骨骼旋转轴。