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The pure rotational spectra of CF$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">35</mrow>}$Cl-H$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$O, CF$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">37</mrow>}$Cl-H$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$O, CF$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">35</mrow>}$Cl-H$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">18</mrow>}$O, CF$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">35</mrow>}$Cl-OHD, CF$\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">35</mrow>}$Cl-D$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$O isotopologues have been investigated by pulsed supersonic-jet FT-microwave spectroscopy. We assigned the \textit{m}~=~0 and \textit{m}~=~1 (for the first 2 isotopologues) states and the spectra, for all, are characteristic of a symmetric top of evenly spaced band. A substitution analysis was made for the \textit{m} = 0 state of the dimers with H$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$$\mathrm{<mrow\; data-mjx-texclass="ORD">18</mrow>}$O and D$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$O. Ab initio calculation (MP2 level of electron correlation and 6-311++G** basis set) have been carried out in order to obtain information about the structure and relative stability. The interaction between the subunits occurs via C-Cl$\cdot \cdot \cdot$O(H$\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}$O) halogen bond.