Weak hydrogen bonds in adducts between freons: the rotational study of CH2F2–CH2ClF

none4siThe rotational spectra of 2 isotopologues of the molecular adduct CH2F2–CH2ClF show that the two subunits are held together through two weak C–H F–C and one C–H Cl–C linkages, rather than through three weak C–H F–C connections. This suggests the weak Cl H interaction to be observed preferentially to a weak F H one. Structural information on these weak hydrogen bonds has been obtained. The dissociation energy has been estimated from centrifugal distortion to be 5.3 kJ mol1.mixedSpada, Lorenzo; Gou, Qian; Tang, Shouyuan; Caminati, WaltherSpada, Lorenzo; Gou, Qian; Tang, Shouyuan; Caminati, Walthe