Method of Preparing a Nanoparticulate Iron - Crown Ether Complex
AssigneeAsiacom Group Investments, Inc.
InventorsAlimamed L. Shabanov, Elmira M. Ramazanova, U. A. Gasanova
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Abstract
A stabilized nano-Fe6-iron-crown ether complex is formed by preparing a solution of an iron salt and an olygomer crown compound in dialkylamine or diethylamine. Sodium tetrahydroboron (NaBH4) and dialkylamine or ethylendiamine are added at a temperature of 0-10° C. The mixture is heated to room temperature and boiled, thereby converting the formed iron (II)-borhydride complex (Fe(BH4)2) to a crown ether—iron-hydride complex [CWFe06].(2H)6. At higher temperature this last complex is converted to the Fe06-crown nanocomposite complex.
Claims11
A method of preparing nanoparticle Fe06-crown ether complex comprising the steps of:
- preparing dialkylamine or ethylenediamine solutions of iron (II) complexes with olygomer crown ethers, containing two nitrogen atoms in macrocyclic ring at a first predetermined temperature;
- adding a predetermined amount of a solution of sodium tetrahydroboron in ethylene diamine and mixing the result for a first predetermined period of time;
- heating the resulting mixture to a second predetermined temperature and then boiling the mixture for a second predetermined period of time;
- filtering the resulting mixture under a nitrogen atmosphere;
- adding ethanol to the resulting mixture to reduce excess NaBH4, and continuing to boil the mixture until at least half of the ethylene diamine has been removed;
- and
- cooling the mixture to below 5° C. to precipitate a nanoparticle Fe06-crown ether complex CWFe6.
A method for stabilization of nanoparticle Fe60 comprising the step of inclusion of Fe60 into a cavity of a macrocyclic compound by electron transfer from nitrogen atoms of a crown ether ring of olygomer crown to empty electron orbitals of nano iron, thereby causing the nanoparticle to have a relatively high electron density.
Dependencies are inferred from the claim text.