Structure and photoluminescence properties study of neodymium complexes containing fluorine ligands

Two neodymium(III) fluorou ternary complexes, [Nd(C 5 H 2 F 6 O 2 ) 3 (C 18 H 15 OP) 2 ] (C 5 H 2 F 6 O 2 = hexafluoroacetylacetone, C 18 H 15 OP = triphenylphosphine oxide) ( 1 ) and [Nd(C 5 H 2 F 6 O 2 ) 3 (C 12 H 24 N 3 O 4 P) 2 ] (C 5 H 2 F 6 O 2 = hexafluoroacetylacetone, C 12 H 24 N 3 O 4 P) = 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 P2 1 /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.