X-ray absorption spectra of MnO/sub 4//sup -/ and MnO/sub 4//sup 2 -/ with synchrotron radiation: a study of structure and bonding properties of transition-metal complexes in solution

Journal Article · Wed Mar 25 00:00:00 EST 1981 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00396a063· OSTI ID:6395645

Sham, T K; Brunschwig, B S

Differences in the structures of the K x-ray absorption edges of solid KMnO/sub 4/ and aqueous solutions of permanganate and manganate are reported. The applicability of synchrotron radiation to the determination of solution structures is demonstrated by these results. The extended x-ray absorption fine structure (EXAFS) results for KMnO/sub 4/ (solid), KMnO/sub 4/ (aqueous), K/sub 2/MnO/sub 4/ (aqueous), and Mn(H/sub 2/O/sub 6/)/sup 2 +/ (aqueous) are tabulated together with reference values of those obtained by x-ray crystal data. The data show that MnO/sub 4//sup -/ acts as a unit in both solid and solution. The values for the metal-oxygen distances determined by EXAFS and x-ray crystal structure are in close agreement. The difference in the Mn-O bond distance ..delta..r between MnO/sub 4//sup -/ and MnO/sub 4//sup 2 -/ in solution is 0.042 A.

• Research Organization: Brookhaven National Lab., Upton, NY
• OSTI ID: 6395645
• Journal Information: J. Am. Chem. Soc.; (United States), Vol. 103:6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
POTASSIUM PERMANGANATES
STRUCTURAL CHEMICAL ANALYSIS
ABSORPTION SPECTRA
COMPARATIVE EVALUATIONS
EXPERIMENTAL DATA
FINE STRUCTURE
INTERATOMIC DISTANCES
SYNCHROTRON RADIATION
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
AQUEOUS SOLUTIONS
SOLIDS
ALKALI METAL COMPOUNDS
BREMSSTRAHLUNG
COHERENT SCATTERING
DATA
DIFFRACTION
DISPERSIONS
DISTANCE
ELECTROMAGNETIC RADIATION
INFORMATION
MANGANESE COMPOUNDS
MIXTURES
NUMERICAL DATA
OXYGEN COMPOUNDS
PERMANGANATES
POTASSIUM COMPOUNDS
RADIATIONS
SCATTERING
SOLUTIONS
SPECTRA
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties