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CYCLOPROPANE-WATER: MICROWAVE SPECTRUM AND STRUCTURE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/12450

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Title: CYCLOPROPANE-WATER: MICROWAVE SPECTRUM AND STRUCTURE
Creators: Andrews, Anne M.; Hillig, K. W., II; Kuczkowski, R. L.
Issue Date: 1991
Abstract: The microwave spectrum of the cyclopropane-water complex has been observed by Fourier transform microwave spectroscopy. Only $a$-type transitions were observed in the spectrum; they were split into doublets of unequal intensity separated by 0.5 to 2 MHz. The stronger and weaker transitions were fit separately to rotational constants $A = 19950(100)$ MHz, $B = 2158.845(5)$ MHz, $C = 2340.321(5)$ MHz and $A = 19945(160)$ MHz, $B = 2158.843(7)$ MHz, $C = 2340.876$(7) MHz, respectively. The water is hydrogen bonded to the center of an edge of the cyclopropane; the hydrogen bond is nearly linear (bond center-H-O $angle = 180(5)^{0}$) with the O and bonded H in the CCC plane. The H to edge distance is 2.35 {\AA}. The position of the free H is uncertain. Nuclear spin statistics and isotopic data indicate that the splittings in the spectrum arise from an internal motion of the water subunit which exchanges the two hydrogens.""
URI: http://hdl.handle.net/1811/12450
Other Identifiers: 1991-RE-4
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