Structure and photoluminescence properties study of neodymium complexes containing fluorine ligands

Qiang Liu, Shuai Zhang, Kai Du, Wa Li, Qiang Yin, Pei-jun Cai

Index: 10.1016/j.jfluchem.2018.03.015

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Abstract

Two neodymium(III) fluorou ternary complexes, [Nd(C5H2F6O2)3(C18H15OP)2] (C5H2F6O2 = hexafluoroacetylacetone, C18H15OP = triphenylphosphine oxide) (1) and [Nd(C5H2F6O2)3(C12H24N3O4P)2] (C5H2F6O2 = hexafluoroacetylacetone, C12H24N3O4P) = tri(4-morphollno) phosphine oxide) (2) have been synthesized by mild condition. The single crystals suitable for X-ray measurement were obtained and the structures of the two complexes were determined by X-ray diffraction in solid states. Single crystal analysis revealed that the two complexes were both eight-coordinated with one central Nd ion and eight O atoms from ligands. They were crystallized in monoclinic symmetry with P21/c and monoclinic symmetry C2/c space group, respectively. The complexes were characterized by IR-spectroscopy, thermogravimetric, elemental analyses and fluorescent. In fluorescence spectra, the two complexes both exhibit characteristic neodymium-centered emission.