Infrared spectra of Hofmann-type durna, thiophene, pyrrole and phenol clathrates: Further evidence for hydrogen bonding interactions between host-lattice and guest molecules

The results are presented for an i.r. spectroscopic study of nickel and cadmium Hofmann-type clathrates, M(NH 3) 2Ni(CN) 4,2G, M = Ni or Cd and G = thiophene, furan, pyrrole or phenol, with the exception of the cadmium clathrate with furan which could not be prepared. The zinc clathrate with pyrrole...

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Bibliographic Details
Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1975-01, Vol.31 (12), p.1775-1784
Main Authors: Dempster, A.B., Morehouse, R.L., Uslu, H.
Format: Article
Language:English
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Summary:The results are presented for an i.r. spectroscopic study of nickel and cadmium Hofmann-type clathrates, M(NH 3) 2Ni(CN) 4,2G, M = Ni or Cd and G = thiophene, furan, pyrrole or phenol, with the exception of the cadmium clathrate with furan which could not be prepared. The zinc clathrate with pyrrole, Zn(NH 3) 2Ni(CN) 42C 4H 5N is also mentioned. Analysis of the vibrational spectra of fresh samples of the clathrates, and samples decomposed by grinding or evacuation, indicates the presence of hydrogen bonding between the host lattice ammonia and the aromatic guest molecules. The greater absorption band width of the perpendicular compared to the parallel vibrations of ammnonia is accounted for in terms of rather free internal rotation of the ammonia molecules in all the clathrates studied. The polymeric host lattice sheet structures with nickel are more stable than those with cadmium.
ISSN:0584-8539
DOI:10.1016/0584-8539(75)80232-7