C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 13/00 (2006.01) C07C 229/16 (2006.01)
Patent
CA 2067514
- 10 - ABSTRACT OF THE DISCLOSURE One embodiment of the present invention is based on the discovery of another hexadecanuclear manganese aggregate having a core of 6 barium ions surrounding a carbonate ion. Stated differently, one embodiment of the present invention comprises a composition of matter having the formula: [Mnl6Bal004(OH)4(CO3)5L8]?xH20 wherein x is an integer ranging from about 0 to about 120 and L is a ligand. Another embodiment of the present invention comprises a method of preparing the novel compounds of the present invention, which method comprises preparing a chloride free aqueous solution containing a source of carbonate ion selected from sodium carbonate, CO2 and mixtures thereof and a compound having the formula: Ba2[Mn4(O)(OH)(O2CR)2L2]?xH2O wherein R is hydrogen or a hydrocarbyl group, x is an integer ranging from 0 to about 30, and L is a ligand having formula I set forth above, and thereafter allowing the reaction mixture to stand for a time sufficient for a compound having the formula: [Mn16Bal004(OH)4(CO3)5L8]?xH20 to form. The compounds of the present invention have magnetic proper- ties rendering them particularly suitable for use in magnetic thermometry and magnetic fluids.
Gorun Sergiu Mircea
Stibrany Robert Timothy
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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