Rotational spectra of several difluoromethane–water
adducts have been observed using two broadband chirpedpulse
Fourier-transform microwave (CP-FTMW) spectrometers.
The experimental structures of (CH2F2)···(H2O)2,
(CH2F2)2···(H2O), (CH2F2)···(H2O)3, and (CH2F2)2···(H2O)2
were unambiguously identified with the aid of 18 isotopic
substituted species. A subtle competition between hydrogen,
halogen, and carbon bonds is observed and a detailed analysis
was performed on the complex network of non-covalent
interactions which stabilize each cluster. The study shows that
the combination of stabilizing contact networks is able to
reinforce the interaction strength through a cooperative effect,
which can lead to large stable oligomers.
