CAJ | 학술논문

采用水热方法合成了1种Pr（Ⅲ）配合物，[Pr（2，5-pdc）（Ac）（H2 O）·2H2 O]n （2，5-pdc ＝2，5-吡啶二羧酸根），通过X射线衍射确定了配合物的晶体结构。结果表明，该配合物为单斜晶系，P2（1）/c空间群。在配合物中，Pr（Ⅲ）离子是9配位的，通过醋酸根和2，5-吡啶二羧酸根将配合物连成3D网状结构。室温下测定了配合物晶体粉末的IR光谱，UV-Vis-NIR光谱以及可见区和近红外区的发射光谱。重点研究配合物的发光性能，该配合物在近红外区表现出Pr （Ⅲ）离子的特征发射带，与Pr （Ⅲ）离子的理论发射带相比发生了红移和劈裂现象，可以从配合物的UV-Vis-NIR吸收光谱中得到佐证。
채용수열방법합성료1충Pr（Ⅲ）배합물，[Pr（2，5-pdc）（Ac）（H2 O）·2H2 O]n （2，5-pdc ＝2，5-필정이최산근），통과X사선연사학정료배합물적정체결구。결과표명，해배합물위단사정계，P2（1）/c공간군。재배합물중，Pr（Ⅲ）리자시9배위적，통과작산근화2，5-필정이최산근장배합물련성3D망상결구。실온하측정료배합물정체분말적IR광보，UV-Vis-NIR광보이급가견구화근홍외구적발사광보。중점연구배합물적발광성능，해배합물재근홍외구표현출Pr （Ⅲ）리자적특정발사대，여Pr （Ⅲ）리자적이론발사대상비발생료홍이화벽렬현상，가이종배합물적UV-Vis-NIR흡수광보중득도좌증。
One Pr(Ⅲ)complex ,[Pr(2 ,5-pdc)(Ac)(H2 O)2 H2 O]n (2 ,5-pdc = 2 ,5-pyridine dicarboxy-late) ,was synthesized by the hydrothermal method and its crystal structure was determined by sin-gle-crystal Xray diffraction .Structure analysis reveals that the complex crystallizes in the monoclinic with space group P2(1)/c .In the complex ,the Pr(Ⅲ)ions were nine-coordinated and were bridged in-to 3D network structure by the acetates and 2 ,5-pyridine dicarboxylates .At room temperature ,the IR spectrum、UV-Vis-NIR absorption spectrum and the emission spectra of the complex in the visible and NIR region were measured .The luminescence properties of the complex were emphatically dis-cussed .The emission bands of the NIR spectrum present red-shift and splitting relative to the theo-retical values ,which were evidenced in the UV-Vis-NIR absorption spectrum .