In 2022,New Journal of Chemistry included an article by Zhou, Qian-hua; Pan, Ming-yue; He, Qi; Tang, Qian; Chow, Cheuk-fai; Gong, Cheng-bin. Safety of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline. The article was titled 《Electrochromic behavior of fac-tricarbonyl rhenium complexes》. The information in the text is summarized as follows:
This paper aims to investigate the electrochromic properties of tricarbonyl rhenium complexes. Using 4,7-diphenylphenanthroline (L1) and 4,7-di(4-substituted)-1,10-phenanthroline (L2-L5) as bidentate ligands, tricarbonyl rhenium complexes, fac-Re(CO)3(Lx)Cl (x = 1-5), were synthesized and characterized by IR spectroscopy, 1H NMR, 13C NMR, and high resolution mass spectrometry. Their stereochem. was investigated by single crystal x-ray diffraction. Theor. HOMO and LUMO charge distributions of fac-Re(CO)3(Lx)Cl were calculated by d. functional theory calculations Their electrochem. and electrochromic properties were studied by cyclic voltammetry, UV-visible spectroscopy and chronoamperometry. All fac-Re(CO)3(Lx)Cl complexes underwent a quasi-reversible reduction-oxidation process and an anodic peak at 1.3 V vs. Ag/Ag+. Electrochromic devices based on fac-Re(CO)3(Lx)Cl exhibited good electrochromic performance such as an obvious change in color from bleached yellow state to colored green state (a challenging electrochromic color), rapid response time of <3 s, moderate optical contrast and coloration efficiency, and good switching stability (fac-Re(CO)3(L2)Cl retained 95.2% of its initial optical contrast after 2400 electrochromic switching cycles). The fac-Re(CO)3(L2)Cl with an electron-donating group (-OCH3) at its para-position exhibited better performance including good switching stability, a higher optical contrast and a significant change in color than the unsubstituted, -CH3 substituted, -COOCH3 substituted and Br-substituted analogs. In the experiment, the researchers used 4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9Safety of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline)
4,7-Bis(4-bromophenyl)-1,10-phenanthroline(cas: 97802-08-9) belongs to organobromine compounds.The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides.Safety of 4,7-Bis(4-bromophenyl)-1,10-phenanthroline
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary