Three new mononuclear lanthanide complexes [Ln(2,4,6-TMBA)₃(terpy)(H₂O)]·C₂H₅OH·H₂O (Ln = Gd(1), Er(2) and [Tb(2,4,6-TMBA)₃(terpy)(H₂O)]·C₂H₅OH(3) (2,4,6-TMBA = 2,4,6-trimethylbenzoate, terpy = 2,2′:6′,2′-terpyridine) were synthesized by solution evaporation method with 2,4,6-trimethylbenzoic acid and 2,2′:6′,2′-terpyridine. These new lanthanide complexes were characterized by elemental analysis, infrared spectroscopy, single-crystal X-ray diffraction, and thermal analysis. The title complexes were found to be mononuclear units with the same coordination number of nine. The structures of the three lanthanide complexes could be divided into two types. The difference was that there were not only free ethanol molecules but also free water molecules in complexes 1–2, while there were only free ethanol molecules in complex 3. Thermogravimetry (TG), differential thermogravimetric (DTG), differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FTIR) were used to study the thermal behavior of complexes and the gas escaping from the thermal decomposition process. In addition, the fluorescence test showed that complex 3 had strong green luminescence properties, and the fluorescence lifetime of complex 3 was 0.637 ms.

三个新的单核镧系元素配合物 [Ln(2,4,6-TMBA) ₃ (terpy)(H ₂ O)]·C ₂ H ₅ OH·H ₂ O (Ln = Gd(1), Er(2) 和 [ Tb(2,4,6-TMBA) ₃ (terpy)(H ₂ O)]·C ₂ H ₅OH(3) (2,4,6-TMBA = 2,4,6-trimethylbenzoate, terpy = 2,2':6',2'-terpyridine) 以2,4,6-trimethylbenzoic 溶液蒸发法合成酸和 2,2':6',2'-三联吡啶。通过元素分析、红外光谱、单晶 X 射线衍射和热分析对这些新的镧系元素配合物进行了表征。发现标题配合物是具有相同配位数九的单核单位。三种镧系配合物的结构可分为两种类型。不同之处在于配合物1-2中不仅有游离乙醇分子，还有游离水分子，而配合物3中只有游离乙醇分子。热重（TG）、差示热重（DTG）、差示扫描量热法（DSC） , 和傅里叶变换红外光谱 (FTIR) 用于研究配合物的热行为和热分解过程中逸出的气体。此外，荧光测试表明配合物3具有很强的绿色发光特性，配合物3的荧光寿命为0.637 ms。