title: Sodium citrate dihydrate doped with Mn3+ ions.
abstract: Sodium citrate dihydrate doped with Mn(3+) ions, namely trisodium(I) managnese(III) citrate(3-) dihydrate, [Na(3)Mn(0.011)(C(6)H(5)O(7))(H(2)O)(2)](n), was obtained during attempts to prepare some complex Mn(III) citrates from a concentrated strong alkaline solution containing Na(+), Mn(3+) and citrate ions. The compound is isostructural with the recently described Na(3)(C(6)H(5)O(7)).2H(2)O [Fischer & Palladino (2003). Acta Cryst. E59, m1080-m1082]. The essential difference between these two structures is the presence of a very small proportion (0.205 wt%) of Mn(3+) ions, which are positioned at the special 4e Wyckoff position in C2/c, where they are in a highly distorted octahedral environment of O atoms from two citrate anions.
authors.affiliation: Department of General and Inorganic Chemistry, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia.
authors.forename: Dejan
authors.initials: D
authors.lastname: Poleti
authors.forename: Ljiljana
authors.initials: L
authors.lastname: Karanović
authors.forename: Tamara
authors.initials: T
authors.lastname: Dordjević
authors.forename: Katarina
authors.initials: K
authors.lastname: Duris
mesh_terms: D000838:Anions / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D002951:Citrates / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008345:Manganese / Q000737:chemistry*; D000077559:Sodium Citrate; D012996:Solutions
chemical_list: D000838:Anions; D002412:Cations; D002951:Citrates; D012996:Solutions; D000077559:Sodium Citrate; D008345:Manganese