Yimklan Saranphong, Kaeosamut Nippich, Sammawipawekul Nithiwat, Wongngam Sutsiri, Ngamsomrit Satienrapong, Rujiwatra Apinpus, Chimupala Yothin
Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand.
ACS Omega. 2024 Jan 8;9(3):3988-3996. doi: 10.1021/acsomega.3c08506. eCollection 2024 Jan 23.
A series of five isostructural 3D lanthanide-based coordination polymers [Ln(HO)(glu)(SO)] [Ln = Pr(), Nd(), Sm(), Eu(), and Gd()] was effortlessly obtained within a few minutes via the microwave-heating method. The employment of auxiliary bases, that is, sodium hydroxide, 4,4'-bipyridine, and 1,4-diazabicyclo[2.2.2]octane, led to the formation of the title complex, whereas base-free synthesis yielded a three-dimensional inorganic coordination polymer, [Ln(HO)(SO)]·HO, Ln = Nd (). The robustness of the synthetic method was illustrated as both microwave-heating and conventional hydrothermal techniques also enabled the formation of a high-crystalline phase-pure complex -. In the structure of -, glutarato (glu) and sulfato ligands link dinuclear Ln(III) building units into three-dimensional frames. The glu ligands act as tethering linkers, expanding the structure into a neutral 3D coordination network. Hydrogen bonds were found to be the predominant intermolecular interactions in the crystal structures. Photoluminescence of the complex - was studied.
通过微波加热法，在几分钟内轻松获得了一系列五个同构的基于镧系元素的三维配位聚合物[Ln(HO)(glu)(SO)] [Ln = Pr(Ⅲ)、Nd(Ⅲ)、Sm(Ⅲ)、Eu(Ⅲ)和Gd(Ⅲ)]。使用辅助碱，即氢氧化钠、4,4'-联吡啶和1,4-二氮杂双环[2.2.2]辛烷，导致形成标题配合物，而无碱合成产生了三维无机配位聚合物[Ln(HO)(SO)]·HO，Ln = Nd (Ⅲ)。合成方法的稳健性体现在微波加热和传统水热技术都能形成高结晶度的纯相配合物-。在-的结构中，戊二酸根（glu）和硫酸根配体将双核Ln(III)结构单元连接成三维框架。glu配体作为连接链，将结构扩展为中性三维配位网络。发现氢键是晶体结构中主要的分子间相互作用。研究了配合物-的光致发光。
