Shape of the Adduct Formic Acid–Dimethyl Ether: A Rotational Study

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• 作者：Luca Evangelisti ; Lorenzo Spada ; Weixing Li ; Anna Ciurlini ; Jens-Uwe Grabow ; Walther Caminati
• 刊名：Journal of Physical Chemistry A
• 出版年：2016
• 出版时间：May 12, 2016
• 年：2016
• 卷：120
• 期：18
• 页码：2863-2867
• 全文大小：290K
• 年卷期：0
• ISSN：1520-5215

文摘

Formic acid and dimethyl ether are combined in a supersonic expansion to form a molecular adduct with the two subunits held together by a “classical” OH···O hydrogen bond and a bifurcated weak CH₂···O hydrogen bond. The rotational spectra of the parent and of two ¹³C isotopologues in natural abundance show that the complex has C_s symmetry, with the heavy atom symmetry planes of HCOOH and (CH₃)₂O perpendicular to each other.