VIBRATIONAL SPECTRUM AND STRUCTURE OF METAL-CYANIDE COMPLEXES IN THE SOLID STATE. III. Hg(CN)$sub 2$
The infrared spectra of solid Hg(CN)/sub 2/ and the mono- and di- substituted C/sup 13/ and N/sup 15/ species have been observed. The polarized spectrum of a single crystal of the normal species was also observed. The seven fundamental vibrations of the linear, symmetric Hg(CN)/sub 2/ molecule have been assigned at 2192, 415, 2193.5, 442, 276, 341, and ca 100 cm/sup -1/. From the observed frequencies of the normal and isotopic species, force constants were calculated for two possible structures: N--C--Hg--C --N and C --N--Hg--N--C. It is shown that the latter structure gives unreasonably large values for the CN stretching force constant (> 20 md/A) and the CN, HgN interartion constant ( approximately 2.4 md/A), while the former structure yields quite reasonable force constants, namely: FCN = 17.6, FHgC = 2.61, FCN, C'N' = --0.1, FHgC, HgC' = 0.1, and FHgC, CN = 0.1 md/A. These results are presented as strong evidence that the cyanides are bound to the mercury through carbon atoms. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-12-000162
- OSTI ID:
- 4332903
- Journal Information:
- Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 27; ISSN JCPSA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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