Complexation of iron(III) alkoxides with alkoxides of alkali and alkaline-earth metals
An investigation of the solubility in MOEt-''Fe(OEt)/sub 3/''-EtOH systems (M = Li, Na, K, Ba/2) at 20/sup 0/C has established that the crystallization branches of the components are arranged along the sections with Fe:M ratios equal to 1:1 and 1:3, between which there is homogeneous region for the existence of colored glasses which are amorphous to x-rays on the M(OEt)/sub n/-''Fe(OEt)/sub 3/ side (only for the 1:1 composition when M = Li). Their IR spectra differ from the spectra of the components. The formation of the complexes MFe(OEt)/sub 4/ (I) M = Li, Na, K, Ba/2) and M/sub 3/Fe(OEt)/sub 6/ (II) (M = Na, K, Ba/2) in solution has been established by conductometric titrations (with subsequent treatment of the results by statistical methods). The stability of the complexes of type I increases along the series K < Na < Li < Ba and exceeds the stability of the complexes of type II. The absence of solid complexes in the M(OMe)/sub n/-Fe(OMe)/sub 3/-MeOH systems (M = Li, Na, K, Ba/2) has been proved (in contradiction to the literature data). It has been concluded that there is a considerable decrease in the strength of the bimetallic alkoxide upon the transition from Al to Fe(III).
- Research Organization:
- M.V. Lomonosov Moscow State Univ., USSR
- OSTI ID:
- 6157674
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Journal Name: Sov. J. Coordinat. Chem.; (United States) Vol. 11:9; ISSN SJCCD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPLEXES
ALKALINE EARTH METAL COMPLEXES
ALKOXIDES
BARIUM COMPLEXES
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL ANALYSIS
COHERENT SCATTERING
COMPLEXES
COMPLEXOMETRY
CRYSTALLIZATION
DIFFRACTION
INFRARED SPECTRA
IRON COMPLEXES
LITHIUM COMPLEXES
PHASE TRANSFORMATIONS
POTASSIUM COMPLEXES
QUANTITATIVE CHEMICAL ANALYSIS
SCATTERING
SODIUM COMPLEXES
SOLUBILITY
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TITRATION
TRANSITION ELEMENT COMPLEXES
X-RAY DIFFRACTION