Cerium(III) methanesulfonate explained

Cerium(III) methanesulfonate is a white salt, usually found as the dihydrate with the formula Ce(CH₃SO₃)₃·2H₂O that precipitates from the neutralisation of cerium(III) carbonate with methanesulfonic acid, as first reported by L.B. Zinner in 1979.^{[1] [2]} The crystals have a monoclinic polymeric structure were each methanesulfonate ion forms bonds with two cerium atoms, which present a coordination number of 8.^[3] The anhydrous salt is formed by water loss at 120 °C. Similar methanesulfonates can be prepared with other lanthanides.^[4] Cerium(III) methanesulfonate in solution is used as a precursor of electrogenerated cerium(IV), which is a strong oxidant and whose salts can be used in organic synthesis.^[5] The same principle of Ce(IV) electrogeneration is the fundamental reaction in the positive half-cell of the zinc–cerium battery.

See also

• Cerium
• Zinc–cerium battery

Notes and References

1. Zinner. L.B.. Hydrated lanthanide methanesulfonates. Anais da Academia Brasileira de Ciências. 1979. 30. 27.
2. Zinner. L.B.. Anhydrous lanthanide (III) methanesulfonates. Anais da Academia Brasileira de Ciências. 1980. 52. 4. 715.
3. Aricó. E.M. Zinner. L.B.. Apostolidis. C.. Dornberger. E.. Kanellakopulos. B.. Rebizant. J.. Structures of the anhydrous Yb(III) and the hydrated Ce(III), Sm(III) and Tb(III) methanesulfonates. Journal of Alloys and Compounds. 1997. 249. 1–2. 111–115. 10.1016/s0925-8388(96)02756-9 .
4. Aricó. E.M.. Zinner. L.B.. Kanellakopulos. B.. Dornberger. E.. Rebizante. J.. Apostolidis. C.. Structure and properties of hydrated La(III), Nd(III) and Er(III) methanesulfonates. Journal of Alloys and Compounds. 2001. 323–324. 39–44. 10.1016/s0925-8388(01)00975-6 .
5. Kreh. Robert P.. Mediated electrochemical synthesis of aromatic aldehydes, ketones, and quinones using ceric methanesulfonate. The Journal of Organic Chemistry. 1989. 54. 7. 1526–1531. 10.1021/jo00268a010.