Acta Phys. -Chim. Sin. ›› 1989, Vol. 5 ›› Issue (06): 750-754.doi: 10.3866/PKU.WHXB19890622

• Note • Previous Articles     Next Articles

REDUCTION OF P2Mo186- EXCITATION STATE BY ALIPHATIC ALCOHOLS

You Xiaozhen; Ren Tong; Chen Jie; Zhu Longgen   

  1. Coordination Chemistry Institute; Nanjing University
  • Received:1988-04-11 Revised:1989-03-21 Published:1989-12-15
  • Contact: You Xiaozhen

Abstract: In this paper, the kinectics and quantum yields of heteropolyanion P_2Mo_(18)O_(62)~(6-) excitation state reduced by methanol, ethanol, n-propanol, 2-propanol, ethylene glycol, and tert-butyl alcohol are reported.
We have measured the conversion rate of HPC to its reduced form HPB under the irradiation of Xe lamp when mixed with aliphatic alcohol. By a good linear relation between the concentration of HPB and the reaction time (Figure 2), a zero -order reaction was shown. The quantum yield of HPB was measured in the presence of aliphatic alcohol, the rate constants κ_r defined by d(HPB)/dt=κ_r(HPC*) (Aliphatic alcohol) wwere also estimated. The sequence of the κ_r is as follows:
ethylene glycol>2-propanol>n-propanol~ethanol>methanol>>tert-butyl alcohol
In addition, the spectra and properties of both HPC and HPB have been compared.