Abstract
The absolute infrared absorption intensities of four fundamental bands in CH2Cl2 have been measured in the vapor state. The intensities that have been observed are A6 (CH stretching)=48.0×1010 cycles/sec at NTPA7 (CH rocking)=13.0×100 cycles/sec at NTPA8 (CCl stretching)=1420.0×1010 cycles/sec at NTPA9 (CCl rocking)=375.0×1010 cycles/sec at NTP.These data indicate that the bond moments and bond derivatives are μCH=+0.45×10−18 esuμCCl=−0.95×10−18esu∂μCH/∂rCH=+0.3×10−10 esu or −0.2×10−10 esu∂μCCl/∂rCCl=+3.7×10−10 esu.It was not possible to resolve the ambiguity in signs that lead to the alternate values of ∂μCH/∂rCH.
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