The atomic structure of a novel rare earth complex consisting of Nd and the sulfur-containing ligand pipdtc (C5H10NCS2^-) has been studied with extended x-ray absortpiton fine structure(EXAFS) and x-ray diffraction te...The atomic structure of a novel rare earth complex consisting of Nd and the sulfur-containing ligand pipdtc (C5H10NCS2^-) has been studied with extended x-ray absortpiton fine structure(EXAFS) and x-ray diffraction techniques.The complex of formula Nd(pipdtc)4N(CH3)4 crystallizaes in the monoclinic space group P21/n with the following lattice parameters,a=22.685(2),b=20.332(2),c=17.1270(10)A,β=100.570(10)°.Z=8,the calculated density is 1.47g/cm^3,A new derivative method is used to remove the piost-edge absorption background including the multielectron excitation effect.The EXAFS results demonstrate that there are about eight S and four O atoms around Nd with the Nd-S bond length of 2.916A and the Nd-O bond length of 2.415A,respectively.This implies that the powder of this complex is not stable and is easy to oxidize in air.The possible change of structure before and after oxidation is discussed.展开更多
文摘The atomic structure of a novel rare earth complex consisting of Nd and the sulfur-containing ligand pipdtc (C5H10NCS2^-) has been studied with extended x-ray absortpiton fine structure(EXAFS) and x-ray diffraction techniques.The complex of formula Nd(pipdtc)4N(CH3)4 crystallizaes in the monoclinic space group P21/n with the following lattice parameters,a=22.685(2),b=20.332(2),c=17.1270(10)A,β=100.570(10)°.Z=8,the calculated density is 1.47g/cm^3,A new derivative method is used to remove the piost-edge absorption background including the multielectron excitation effect.The EXAFS results demonstrate that there are about eight S and four O atoms around Nd with the Nd-S bond length of 2.916A and the Nd-O bond length of 2.415A,respectively.This implies that the powder of this complex is not stable and is easy to oxidize in air.The possible change of structure before and after oxidation is discussed.
