The 6H-pyridine clusters have been studied by the TOF mass spectrometry,the VUV from synchrotron rediation and the molecular beam technique three-type clusters are observed in the VUV photoionization mass spectroscopy: Pn+(n=2-5,P stands for6H-pyridine molecule), PnH+ (n=2-4) and Pn (H2O)m+(n=4,5, m=1;n=6, m=1,2). ThePnH+ clusters may have the chain structure,the Pn+ and Pn(H2O)m+ clusters may havethe cyclic structures, all of these are formed by the hydrogen-bond.
