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KMID : 1059519850290050510
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Journal of the Korean Chemical Society
1985 Volume.29 No. 5 p.510 ~ p.515
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Dimerization of Aquooxomolybdenum (Ⅴ) ion in Acid Media (Ⅰ). Dehydrogenation of Bridging Hydroxide of Mo2O4(OH)24+(aq)
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Kim Chang-Su
Kim Chan-Woo
Kwon Chang-Yong
Yi Moon-Pyoung
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Abstract
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Color of MoO3+(aq) in concentrated methanesulfonic acid (∼10M) changes dark green due to the formation of Mo2O2(OH)24+(aq) dimer. This color is similar to that shown by addition of water to that shown by addition of water to green MoO3+(aq) 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 Mo2O2(OH)24+(aq) are dehydrogenated at the less concentration of ∼6 M for HPTS and ∼10M for CH3SO3H. The structure of both the yl-oxygens and the bridging oxygens of final product is identified to (*image)unit.
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