The gas phase FTIR studies of chloroform plus B and halothane plus B (B = TMA, FCD3) mixtures

K. S. Rutkowski, S. M. Melikova, R. E. Asfin, B. Czarnik-Matusewicz, M. Rospenk

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучная

Аннотация

An infrared and ab initio (MP216-311++G(2d,2p)) study of complexes of chloroform (CI3CH(D)) and halothane (CHC1BrCF3) with weak methyl fluoride (FCD3) and strong trimethylamine (N(CH(D)(3))(3) TMA) proton acceptors in the gas phase near the room temperature is presented. The so called blue shifting hydrogen bond has been identified in the former case and the formation of conventional H-bond with the red frequency shift of CH stretching vibration of the proton donors was observed in the latter case. An attempt of temperature spectroscopic measurements has been made for the systems studied to estimate the formation energy. In the case of Cl3CD...N(CH3)(3) complex this value equals 23(2) kJ/ mol. The results obtained in ab inito calculations generally agree with those obtained in IR spectroscopic measurements, however they overestimate the frequency shift caused by the complex formation, especially in the case of the red-shifting H-bonds. Possible origin of such overestimation is discussed shortly. (C) 2013 Else
Язык оригиналаанглийский
Название основной публикацииThe gas phase FTIR studies of chloroform plus B and halothane plus B (B = TMA, FCD3) mixtures
Число страниц6
DOI
СостояниеОпубликовано - 2014

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