experimental data for 4-(5-)methylimdazole



  Dear Netters,
      I am now studying on 4-(or 5-)methylimdazole and its protonated
  compound with theoretical methods. Unfortunately, it is not so easy for
  me to find their very basic experimental data.
      Does anybody out there kindly provide some references or hints
  concerning their geometries, atomic charges and dipole moments in the gas
  phase as well as in the sovlent ?  Any other data related to them are
  also highly appreciated.
      By the way, I have consulted the book "Comprehensive Heterocyclic
  Chemistry (1984) edited by Katritzky and Rees but got disappointed.
      Many thanks in advance.
  				G.S.Li
  				email: li - at - pink.incm.u-nancy.fr