# THE ASYMMETRIC STRETCHING FREQUENCIES OF $FeCl_{2}, CoCl_{2}, NiCl_{2}$ AND $CoBr_{2}$

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 dc.creator James, Thomas C. en_US dc.creator Hougen, Jon T. en_US dc.creator Klemperer, William en_US dc.date.accessioned 2006-06-15T13:05:49Z dc.date.available 2006-06-15T13:05:49Z dc.date.issued 1960 en_US dc.identifier 1960-C-8 en_US dc.identifier.uri http://hdl.handle.net/1811/7934 dc.description Author Institution: Department of Chemistry, Northwestern University; Department of Chemistry, Harvard University en_US dc.description.abstract “The infrared absorption spectra of the gaseous dichlorides of iron, cobalt, and nickel and of nickel bromide display two absorptions in the region of the asymmetric stretching frequency. The stronger, higher frequency member of the pair has been observed in emission experiments on unsaturated vapors, and is assigned to the asymmetric stretch of the presumably linear monomer. The weaker transition is assigned to a vibrational mode of the dimeric molecule. The observed frequencies are $FeCl_{2}, 490 cm^{-1}; CoC1_{2}-492 cm^{-1}$; $NiCl_{2},-505 cm{-1}$; and $CoBr_{2},-397 cm^{-1}$. Force constants of the three dichlorides calculated from these frequencies agree with those of the diatomic monochlorides to 0.1 $millidynes/A^{2}$.” en_US dc.format.extent 79466 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title THE ASYMMETRIC STRETCHING FREQUENCIES OF $FeCl_{2}, CoCl_{2}, NiCl_{2}$ AND $CoBr_{2}$ en_US dc.type article en_US