So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Lu, Ying-Bing; Wu, Jun-Wei; Zhu, Shui-Dong; Wang, Sheng-Qian; Zhang, Shi-Yong; Liu, Cai-Ming; Li, Rong; Li, Juan; Ai, Jia-Hao; Xie, Yong-Rong researched the compound: 1,10-Phenanthroline( cas:66-71-7 ).Quality Control of 1,10-Phenanthroline.They published the article 《3-Pyridylacetic-Based Lanthanide Complexes Exhibiting Magnetic Entropy Changes, Single-Molecule Magnet, and Fluorescence》 about this compound( cas:66-71-7 ) in ACS Omega. Keywords: lanthanide pyridylacetate phenanthroline complex preparation magnetic property; fluorescence thermal stability lanthanide pyridylacetate phenanthroline; crystal structure lanthanide pyridylacetate phenanthroline. We’ll tell you more about this compound (cas:66-71-7).
Four complexes from lanthanides, 3-pyridylacetate, and 1,10-phenanthroline, formulated as [Ln2(3-PAA)2(μ-Cl)2(phen)4](ClO4)2 [Ln = Gd(1), Dy(2), Eu(3), Tb(4), 3-PAA = 3-pyridylacetic acid, phen = 1,10-phenanthroline], were obtained. The four compounds were characterized by IR spectra, thermogravimetric analyses, powder X-ray diffraction, and single-crystal X-ray diffraction. Compounds 1-4 are isomorphous, and they have a dinuclear structure. Magnetic studies reveal that 1 shows the magnetocaloric effect with -ΔSmmax = 19.03 J kg-1 K-1 at 2 K for ΔH = 5 T, and 2 displays a field-induced single-mol. magnet with Ueff = 19.02 K. The photoluminescent spectra of 3 and 4 exhibit strong characteristic emission, which demonstrate that the ligand-to-EuIII/TbIII energy transfer is efficient.
There are many compounds similar to this compound(66-71-7)Quality Control of 1,10-Phenanthroline. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics