Study on Quantum Effect in Hydrogen Bonded Dielectric Substances

Proton and deuteron distributions obtained from the neutron structure analyses of khco_3kh 3(从事_ 3)译文:2,nh_3 ch_2 COOH / h_2 po_3 and their deuterated analogues have been studied by solving the SchrodingerCalculated distributions reproduce quite all the observedones,indicating the presence of the quantum tunneling. the isotope效应on the structural parameters ofthe hydrogen bond system can be understood by the tunneling effect. In addition，NMR also gives the evidence of the quantum tunneling in nh_3 ch_2 COOH / h_2 po_3。

Proton and deuteron distributions obtained from the neutron structure analyses of KHCO_3, KH_3(SeO_3)_2, NH_3CH_2COOH・H_2PO_3 and their deuterated analogues have been studied by solving the Schrodinger equation with double Morse potential. Calculated distributions reproduce quite well all the observed ones, indicating the presence of the quantum tunneling. The isotope effect on the structural parameters of the hydrogen bond system can be understood by the tunneling effect. In addition, NMR also gives the evidence of the quantum tunneling in NH_3CH_2COOH・H_2PO_3.