Infrared spectra and structure of alkali-metal and alkaline-earth di-2-ethylhexylphosphates

Journal Article · Tue Oct 01 00:00:00 EDT 1985 · Sov. J. Coordinat. Chem.; (United States)

OSTI ID:6509035

Stoyanov, E S; Mikhailov, V A; Popov, V M

The types of coordination of the di-2-ethylhexylphosphate anion (X/sup -/) to M/sup +/ (M = Li, Na, K, Rb, Cs) and Mg/sup 2 +/ in solid salts and in their solutions in CCl/sub 4/ have been studied by IR spectroscopy (25-4000 cm/sup -1/). The combination LiX forms only polymers of type (I); NaX and KX form not only I, but also two types of monomers, (II) and (III), and RbX and CsX form practically only III and I to only a slight extent. The compound Mgx/sub 2/ forms linear polymeric molecules of the (MgX/sub 2/)/sub n/ type, in which the four oxygen atoms in the first coordination sphere of Mg/sup 2 +/ form a distorted tetrahedron. The forms CaX/sub 2/ and BaX/sub 2/ contain two or more inequivalent types of POO groups. The laws obtained for the variation of the types of coordination of POO groups to the M/sup +/ cation along the series from Li/sup +/ to Cs/sup +/ have been discussed in connection with the changes in the density of the charges on the M/sup +/ cations and their radii. It has been established that the interaction of the polymeric (LiX)/sub n/ molecules with pyridine (Py) results in the formation of short-chain (LiX 2Py)/sub n/ polymers and that the interaction in 100% pyridine results in the formation of long-chain polymers and monomeric molecules of type II. The properties of the salts studied and the corresponding carboxylates have been compared. The structure types are illustrated.

• OSTI ID: 6509035
• Journal Information: Sov. J. Coordinat. Chem.; (United States), Vol. 10:12; Other Information: Translated from Koordinatsionnaya Khimiya; 10: No. 12, 1619-1627(Dec 1984)
• Country of Publication: United States
• Language: Russian

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CESIUM COMPLEXES
INFRARED SPECTRA
LITHIUM COMPLEXES
MAGNESIUM COMPLEXES
ORGANIC PHOSPHORUS COMPOUNDS
POTASSIUM COMPLEXES
RUBIDIUM COMPLEXES
SODIUM COMPLEXES
CARBON TETRACHLORIDE
CATALYTIC EFFECTS
CHEMICAL BONDS
CHEMICAL PREPARATION
LATTICE VIBRATIONS
MOLECULAR STRUCTURE
POLYMERIZATION
PYRIDINE
STRUCTURAL CHEMICAL ANALYSIS
VISCOSITY
ALKALI METAL COMPLEXES
ALKALINE EARTH METAL COMPLEXES
AZINES
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
COMPLEXES
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PYRIDINES
SPECTRA
SYNTHESIS
400201* - Chemical & Physicochemical Properties