In 2019,Chemistry – A European Journal included an article by Nihei, Masayuki; Yanai, Yuta; Natke, Dominik; Takayama, Ryo; Kato, Marina; Sekine, Yoshihiro; Renz, Franz; Oshio, Hiroki. Synthetic Route of C12H12N2. The article was titled 《Solid-State Hydrogen-Bond Alterations in a [Co2Fe2] Complex with Bifunctional Hydrogen-Bonding Donors》. The information in the text is summarized as follows:
A hydrogen-bonding donor-acceptor system, [Co2Fe2(bpy*)4(CN)6(tp*)2](PF6)2·2ABA·4BN·2PE (1Solv), was prepared by co-crystallization of an external stimuli-responsive cyanide-bridged tetranuclear [Co2Fe2] complex and bifunctional hydrogen-bonding donors, p-aminobenzoic acid. Compound 1Solv exhibited a gradual electron-transfer-coupled spin transition (ETCST), and the removal of solvent mols. led to an abrupt thermal ETCST behavior with increased transition temperature X-ray structural anal. revealed that the modification of ETCST was caused by a significant alteration of a hydrogen-bonding mode between the tetranuclear [Co2Fe2]2+ cations and ABA mols. Variable temperature IR measurements indicated that the desolvated form, 1desolv, showed dynamic alteration of hydrogen-bonding interactions coupled with thermal ETCST behavior. These results suggested that the tetranuclear [Co2Fe2] complex shows solid-state modulations of hydrogen-bond strengths by external stimuli. In the part of experimental materials, we found many familiar compounds, such as 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Synthetic Route of C12H12N2)
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.Synthetic Route of C12H12N2 Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.