Abstract
Infrared spectra of hexagonal Cd(OH)2, CdOHCl, and CdOHF, along with deuterated analogues CdODCl and CdODF, in the range 2.5–16 μ are reported for the first time. The effects of substituting a halogen for an OH group in Cd(OH)2 are (i) shift of OH stretching vibration to a lower frequency and (ii) appearance of strong absorption bands in the region 8–16 μ. All the observed bands in the deuterated analogues are displaced to lower frequencies with νH/νd ratios between 1.35–1.37. The spectra of CdOHCl and CdOHF show a high correlation with their zinc analogues and although both spectra appear consistent with a simple molecule of Cs or C1 symmetry, an alternate interpretation is given in terms of OH lattice vibrations.
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