In 2022,Giordana, Alessia; Priola, Emanuele; Pantaleone, Stefano; Andreo, Luca; Mortati, Leonardo; Benzi, Paola; Operti, Lorenza; Diana, Eliano published an article in Dalton Transactions. The title of the article was 《HgBrI: a possible tecton for NLO molecular materials?》.Reference of 4,4′-Dimethyl-2,2′-bipyridine The author mentioned the following in the article:
Mixed Hg(II) halides were known for a long time as good NLO (nonlinear optic) materials. The NLO properties are due to the halogen disposition in the solid state and the electron distribution among the bonds formed by soft elements. The possibility of using HgBrI as a asym. tecton in the preparation of noncentrosym. crystalline compounds was studied by exploiting the coordinating power of Hg(II) toward N-donor ligands, and 7 coordination complexes were obtained. To unravel the nature of these complex systems the authors combined the data from different techniques: Raman spectroscopy, SC-XRD and Second Harmonic Generation, supported by a periodic DFT computational approach. In HgBrI crystalline products with low symmetry, the presence of substitutional disorder leads to a lack of the inversion center conferring NLO activity, which is absent in analogous complexes of Hg(II) halides. These results indicate HgBrI as an interesting tecton to obtain metallorg. NLO materials. After reading the article, we found that the author used 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Reference of 4,4′-Dimethyl-2,2′-bipyridine)
4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.Reference of 4,4′-Dimethyl-2,2′-bipyridine Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.