A New Type of Lanthanide(III) Complex with 3-Hydroxybenzoic Acid, [ML₃(H₂O)₃].2H₂O. Crystal and Molecular Structure of Triaquatris(3-Hydroxybenzoato)-Neodymium(III) Dihydrate

Abstract

Abstract Triaquatris(3-hydroxybenzoato)neodymium(III) dihydrate, a new type of lanthanide complex with 3-hydroxybenzoic acid, crystallizes in the monoclinic space group C2/c with a = 22.220(8), b = 10.007(6), c = 22.086(8) Å, β = 99.33(3)[ddot] and Z = 8. The crystal and molecular structure of the complex has been determined using X-ray diffraction data measured with MoKα radiation. The Nd3+ ion is coordinated to nine oxygen atoms, with Nd-O distances ranging from 2.338(7) to 2.697(6) Å. The coordinated oxygen atoms are from three water molecules and six oxygen atoms are from the 3-hydroxybezoate anions. There are three different binding modes for the anion to the Nd3+ ion: mono-, bi- and terdentate.