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Journal ArticleDOI

Chemistry of oxometal ion—XIII. Studies on molybdenyl oxalates

01 Jan 1979-Journal of Inorganic and Nuclear Chemistry (Pergamon)-Vol. 41, Iss: 3, pp 417-420
About: This article is published in Journal of Inorganic and Nuclear Chemistry.The article was published on 1979-01-01. It has received 1 citations till now.
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TL;DR: In this article, the extraction of iron(III) from aqueous solutions by di(2-ethylhexyl)phosphoric acid (DEHPA, HA) in hexane at constant ionic strength (0.5 M NaNO3), has been investigated under acidic conditions by means of metal distribution measurements.

2 citations

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Journal ArticleDOI
TL;DR: In this paper, a normal coordinate treatment made on the 1:1, metal:ligand model of the chelate ring of tris(oxalato)‐Cr(III) resulted in the assignment of metaloxygen stretching bands in the range between 600 and 300 cm-1 for various oxalato complexes.
Abstract: The infrared spectra of 10 oxalato complexes have been obtained in the frequency range 4000 to 300 cm—1. A normal coordinate treatment made on the 1:1, metal:ligand model of the chelate ring of tris‐(oxalato)‐Cr(III) resulted in the assignment of metal‐oxygen stretching bands in the range between 600 and 300 cm—1 for various oxalato complexes. The force constants and the band assignments obtained are compared with those of the previous normal coordinate analysis based on the free oxalato ion. Relationships between the metal‐oxygen and the carbon‐oxygen stretching frequencies are discussed.

287 citations

Journal ArticleDOI
TL;DR: In this article, normal coordinate treatments have been made on the square planar 1:2 oxalato complex of Pt(II) and the octahedral 1:3 complex of Cr(III), and the results were compared with those obtained with simple 1:1 complexes.
Abstract: Normal coordinate treatments have been made on the square planar 1:2 oxalato complex of Pt(II) and the octahedral 1:3 oxalato complex of Cr(III), and the results were compared with those obtained with simple 1:1 complexes. It was found that coupling between the ligands in the square planar 1:2 complex is small whereas coupling between the ligands in the octahedral 1:3 complex is appreciable. Observed differences of the spectra between 1:1 and 1:2 oxalato complexes of Pt(II) and between 1:1 and 1:3 oxalato complexes of Cr(III) and Co(III) are in good agreement with the results of these calculations.

97 citations

Journal ArticleDOI
TL;DR: In this paper, the preparation and chemical properties of molybdenum(V) with 2:2′-dipyridyl are described and possible structures of the complexes are discussed.

57 citations