Dimerization of Aquooxomolybdenum (V) ion in Acid Media (I). Dehydrogenation of Bridging Hydroxide of $Mo_2O_4(OH)_{2(aq)}^{4+}$

산성용액에서 아쿠오옥소몰리브덴 (V) 이온의 이합화 반응 (I). 이합체 착물의 두다리인 히드록소의 탈수소화 반응

  • Chang-Su Kim (Department of Chemistry Education, Taegu University) ;
  • Chann-Woo Kim (Department of Chemistry Education, Taegu University) ;
  • Chang-Yong Kwon (Department of Chemistry Education, Taegu University) ;
  • Moon-Pyoung Yi (Department of Chemistry Education, Taegu University)
  • 김창수 (大邱大學校 師範大學 化學敎育科) ;
  • 김찬우 (大邱大學校 師範大學 化學敎育科) ;
  • 권창용 (大邱大學校 師範大學 化學敎育科) ;
  • 이문평 (大邱大學校 師範大學 化學敎育科)
  • Published : 1985.10.20

Abstract

Color of $MoO_{(aq)}^{3+}$ in concentrated methanesulfonic acid (∼10M) changes dark green due to the formation of $Mo_2O_2(OH)_{2(aq)}^{4+}$ dimer. This color is similar to that shown by addition of water to that shown by addition of water to green $MoO_{(aq)}^{3+}$ solution in 15-16M methanesulfonic acid. The molar extinction coefficient of monomer in 15M methanesulfonic acid is about 20 at 415nm. Rate constants are independent on the aquomolybdenum (V) and hydrogen ion concentration under the condition of this experment. Bridging hydroxides of $Mo_2O_2(OH)_{2(aq)}^{4+}$ are dehydrogenated at the less concentration of ∼6 M for HPTS and ∼10M for $CH_3SO_3H$. The structure of both the yl-oxygens and the bridging oxygens of final product is identified to (*image)unit.

Keywords

References

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