SOLID COMPLEXES WITH TETRAVALENT METAL IONS AND ETHYLENEDIAMIME TETRA- ACETIC ACID (EDTA)

Journal Article · Wed Jan 01 04:00:00 EST 1964 · Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron

DOI:https://doi.org/10.1016/0022-1902(64)80233-5· OSTI ID:4111308

Langer, H G

Stable, crystalline acidic 1: 1 EDTA chelates could be obtained with tetravalent germanium, tin, titanium, zirconium, hafnium, and thorium. In acidic solution, the preparation of these slightly soluble compounds is straightforward-- -in contrast to other, previously reported methodsand yields very pure materials. All chelates are hydrated. In the case of octa-co-ordinated metals, the water is loosely bound, for hexa-co-ordinated metals, it is part of the molecule and has a strong influence on the infra-red spectra. This difference in water co- ordination has been shown by analytical data, infra-red spectra, and heat treatments. Addition of base leads to hydrolysis which is complicated for all Group IV3 metal chelates, but which results in characteristic salt formation for both germanium and tin EDTA. Changes in the infrared absorptions after hydrolysis and after heat treatment were helpful for the interpretation of bonding in the original chelates. (auth)

• Research Organization: Dow Chemical Co., Framingham, Mass.
• NSA Number: NSA-18-010076
• OSTI ID: 4111308
• Journal Information: Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron, Journal Name: Journal of Inorganic and Nuclear Chemistry (England) Merged with Inorg. Nucl. Chem. Lett. to form Polyhedron Vol. Vol: 26; ISSN JINCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
CHELATES
CHEMICAL REACTIONS
CHEMISTRY
CONFIGURATION
CRYSTALS
EDTA
ELECTRONS
GERMANIUM COMPLEXES
HAFNIUM COMPLEXES
HEAT TREATMENTS
HYDROLYSIS
INFRARED RADIATION
IONS
MOLECULES
QUALITATIVE ANALYSIS
SALTS
SOLIDS
SOLUBILITY
SOLUTIONS
SPECTRA
THORIUM COMPLEXES
TIN COMPLEXES
TITANIUM COMPLEXES
VALENCE
VARIATIONS
WATER
ZIRCONIUM COMPLEXES