Separation and determination of zirconium, thorium, titanium, and the rare earths was written by Pribil, R.. And the article was included in Oesterreichische Chemiker-Zeitung in 1963.Quality Control of 3,3”-Dibromo-5′-(3-bromophenyl)-1,1′:3′,1”-terphenyl This article mentions the following:
A complexometric procedure is described for the separation of Zr, Th, and Ti from each other and from Sc and various lanthanides. Anal. determinations were made by titration of complexes formed with EDTA, diethylenetriaminepentaacetic acid, and triethylenetetraminehexaacetic acid and various complexon-type complex formers. Xylenol Orange was used as indicator. In the experiment, the researchers used many compounds, for example, 3,3”-Dibromo-5′-(3-bromophenyl)-1,1′:3′,1”-terphenyl (cas: 96761-85-2Quality Control of 3,3”-Dibromo-5′-(3-bromophenyl)-1,1′:3′,1”-terphenyl).
3,3”-Dibromo-5′-(3-bromophenyl)-1,1′:3′,1”-terphenyl (cas: 96761-85-2) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Quality Control of 3,3”-Dibromo-5′-(3-bromophenyl)-1,1′:3′,1”-terphenyl
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary