Method for producing bridged manganese complexes of triazacyclononane
US9012630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2010 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Feb 19, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/0216
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for producing manganese complex compounds of the general formula (1), wherein M, X, L, z, Y and q are defined as in claim 1. The method is characterized by the following steps: a) reacting one or more bivalent metal salts with the ligand L in water as the solvent to form a coordination compound from the one or more bivalent metal salt and the ligand L, the one or more bivalent metal salts being selected from bivalent manganese salts and iron salts and at least one bivalent metal salt being a bivalent manganese salt, b) oxidizing the coordination compound of step a) with an oxidant while at the same time maintaining a pH of 11 to 14, to transform the metal M from the bivalent to the trivalent and/or tetravalent form, c) reducing the pH of the reaction mixture to a pH of 4 to 9 and removing any metal oxides or metal hydroxides of the metal M formed and d) adding, at a pH of 4 to 9, a salt of the formula MezYq, wherein Me represents an alkali metal ion, ammonium ion or an alkanol ammonium ion, and Y, z and q are defined as in formula (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.