dc.creator Straley, Joseph W. en_US dc.date.accessioned 2006-06-15T12:46:21Z dc.date.available 2006-06-15T12:46:21Z dc.date.issued 1955 en_US dc.identifier 1955-P-2 en_US dc.identifier.uri http://hdl.handle.net/1811/7443 dc.description Author Institution: Department of Physics, University of North Carolina en_US dc.description.abstract The absolute intensities of infrared absorption bands of species $B_{1}$ and $B_{2}$ have been determined for the halogenated methanes $CH_{2}F_{2}, CH_{2}Cl_{2}, CH_{2}Br_{2}$, and $CF_{2}Cl_{2}$. For the three methylene halides, the bond moments $\mu_{CH}$ and $\mu_{CX}$ and the bond derivative $\delta{\mu_{CX}}/\delta r_{CX}$ have been determined. The ambiguity in sign of the bond derivative $\delta\mu_{CH}/\delta r_{CH}$ has not been resolved. The bond moments $\mu_{CX}$ are all assumed to be negative; their numerical values vary in a nearly linear manner with the electronegativities of the halogens in question. The bond moments $\mu_{CH}$ are all positive but differ from molecule to molecule being larger in $CH_{2}Br_{2}$ than in $CH_{2}F_{2}$. The sign of the bond derivatives $\delta\mu_{CX}/\delta r_{CX}$ is opposite that of the associated $\mu_{CX}$ and in each case represents an effective charge of approximately 0.7e. The simplified model does not yield consistent results when applied to bands of different species in $CF_{2}Cl_{2}$. en_US dc.format.extent 102935 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title THE ABSOLUTE INTENSITY OF INFRARED ABSORPTION BANDS IN $CH_{2}F_{2}, CH_{2}Cl_{2}, CH_{2}Br_{2}$, AND $CF_{2}Cl_{2}$ en_US dc.type article en_US
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