Abstract
Synthesis and IR spectra of novel Hofmann-Td-type aniline clathrates, M(NH3)2Zn(CN)4· 2C6H5NH2 (M = Zn or Cd) are reported for the first time. All the vibrational modes of aniline are characterised. The shifts in ν a(NH2) and ν s(NH2) reveal hydrogen bonding between the NH2 group of aniline and the cyanide group of the host lattice to be stronger than in Hofmann-type aniline clathrates. However, the out of plane deformation mode of aniline indicates absence of hydrogen bonding between ammonia and the π-cloud of the aniline ring. The related aniline clathrates with bridging Cd(CN)4 M(NH3)2Cd(CN)4· 2C6H5NH2 (M=Zn or Cd), exhibit similar behaviour.
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