OXIDATION STATES OF MANGANESE IN FUSED ALKALI NITRATES

1963 ◽  
Vol 41 (1) ◽  
pp. 108-111 ◽  
Author(s):  
Ruth M. Bennett ◽  
Owen G. Holmes

When dissolved in fused alkali nitrate, manganese (II) is oxidized to MnO2. In the same solvent MnO4− decomposes to MnO2. Peroxide ion arrests the decomposition at MnO42−, while the presence of hydroxide ion results in the formation of MnO43−. The spectra of MnO42− and MnO43− in molten nitrate show great similarity to their spectra in alkaline aqueous solution.

Nature ◽  
1964 ◽  
Vol 202 (4930) ◽  
pp. 343-345 ◽  
Author(s):  
PAUL A. LOACH ◽  
MELVIN CALVIN

1982 ◽  
Vol 35 (6) ◽  
pp. 1245 ◽  
Author(s):  
P Becker ◽  
JK Beattie

The oxidation of cyclohexanol by ferricyanide in alkaline aqueous solution is catalysed by micromolar concentrations of K3RuCl6. The rate law at 25.0�C in pH 11.9 phosphate buffer containing 0.50 M NaCl is -d[FeIII]/dt = [Ru](2klk2[alcohol][FeIII])/(2kl[alcohol] + k2[FeIII]) with kl 12 � 2 mol-1 1. s-1 and k2 (2.5 � 0.2) × 102 mol-1 1. s-1. A deuterium isotope effect of about 4 is observed when (D12)cyclohexanol is used. A mechanism consistent with these observations involves reduction of the RuIII catalyst by hydride transfer from the alcohol followed by reoxidation by ferricyanide to the original RulIII state.


Biochemistry ◽  
1963 ◽  
Vol 2 (2) ◽  
pp. 361-371 ◽  
Author(s):  
Paul A. Loach ◽  
Melvin Calvin

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