Oxidation States of Manganese Methyl Phæophorbide a in Aqueous Solution

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

Oxidation States of Manganese Hematoporphyrin IX in Aqueous Solution*

Biochemistry ◽  
1963 ◽  
Vol 2 (2) ◽  
pp. 361-371 ◽  
Author(s):  
Paul A. Loach ◽  
Melvin Calvin
Keyword(s):  
Aqueous Solution ◽  
Oxidation States ◽  
Hematoporphyrin Ix

OXIDATION STATES OF MANGANESE IN FUSED ALKALI NITRATES

1963 ◽  
Vol 41 (1) ◽  
pp. 108-111 ◽  
Author(s):  
Ruth M. Bennett ◽  
Owen G. Holmes
Keyword(s):  
Aqueous Solution ◽  
Oxidation States ◽  
Great Similarity ◽  
Hydroxide Ion ◽  
Alkaline Aqueous Solution

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.

The Stability of the Lower Oxidation States of Indium in Aqueous Solution

1953 ◽  
Vol 75 (22) ◽  
pp. 5652-5654 ◽  
Author(s):  
Loren G. Hepler ◽  
Z Z. Hugus ◽  
Wendell M. Latimer
Keyword(s):  
Aqueous Solution ◽  
Oxidation States ◽  
The Stability ◽  
Lower Oxidation

On the Existence and Stability of Cations of d- and f-Transition Elements in Acidic Non-Aqueous Media

1988 ◽  
Vol 41 (9) ◽  
pp. 1433 ◽  
Author(s):  
TA Odonnell
Keyword(s):  
Aqueous Solution ◽  
Chemical Nature ◽  
Aqueous Media ◽  
Transition Element ◽  
Oxidation States ◽  
Transition Elements ◽  
Acidic Media ◽  
Acidic Aqueous Solution ◽  
Existence And Stability ◽  
Acidic Solvents

Recently observed spectra of solvated d- and f-transition element cations in superacidic media, together with spectra of aqua cations in acidic aqueous solution, are used to propose that cationic speciation is much more general in acidic solvents and melts than is usually accepted. It will be shown that cations in unusually low oxidation states are stabilized in highly acidic media, and that these cations disproportionate as the acidity of the medium is decreased and that in general these latter phenomena are independent of the chemical nature or the temperature domain of the medium.

ChemInform Abstract: Lawrencium Chemistry: No Evidence for Oxidation States Lower than 3+ in Aqueous Solution.

ChemInform ◽  
1988 ◽  
Vol 19 (33) ◽  
Author(s):  
U. W. SCHERER ◽  
J. V. KRATZ ◽  
M. SCHAEDEL ◽  
W. BRUECHLE ◽  
K. E. GREGORICH ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Oxidation States

The Oxidation States of Neptunium in Aqueous Solution

1949 ◽  
Vol 71 (2) ◽  
pp. 687-693 ◽  
Author(s):  
J. C. Hindman ◽  
L. B. Magnusson ◽  
T. J. LaChapelle
Keyword(s):  
Aqueous Solution ◽  
Oxidation States

Lawrencium chemistry: no evidence for oxidation states lower than 3+ in aqueous solution

1988 ◽  
Vol 146 (2) ◽  
pp. 249-254 ◽  
Author(s):  
U.W. Scherer ◽  
J.V. Kratz ◽  
M. Schädel ◽  
W. Brüchle ◽  
K.E. Gregorich ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Oxidation States

scholarly journals Anion Exchange Behaviour of Zr, Hf, Nb, Ta and Pa as Homologues of Rf and Db in Fluoride Medium

2019 ◽  
Vol 54 (1) ◽  
Author(s):  
Fabiola Monroy-Guzman ◽  
Didier Trubert ◽  
Lucette Brillard ◽  
Michel Hussonnois ◽  
Olimpus Constantinescu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Chemical Properties ◽  
Oxidation States ◽  
Predominant Species ◽  
Fluoride Complexes ◽  
Anionic Complexes ◽  
Small Production ◽  
Work Stability ◽  
Exchange Behaviour ◽  
Fluoride Medium

Studies of the chemical property of transactinide elements are very difficult due to their short half-lives and extremely small production yields. However it is still possible to obtain considerable information about their chemical properties, such as the most stable oxidation states in aqueous solution, complexing ability, etc., comparing their behaviour with their lighter homologous in the periodic table. In order to obtain a better knowledge of the behavior of rutherfordium, Rf (element 104), dubnium, Db (element 105) in HF medium, the sorption properties of Zr, Hf, Nb, Ta and Pa, homologues of Rf and Db, were studied in NH4F/HClO4 medium in this work. Stability constants of the fluoride complexes of these elements were experimentally obtained from Kd obtained at different F- and H+ concentrations. The anionic complexes: [Zr(Hf)F5]-, [Zr(Hf)F6]2-, [Zr(Hf)F7]3-, [Ta(Pa)F6]-, [Ta(Pa)F7]2-, [Ta(Pa)F8]3-, [NbOF4]- and [NbOF5]2- are present as predominant species in the HF range over investigation.    

Sign in / Sign up

Export Citation Format

Share Document