《Molecular Vises for Precisely Positioning Ligands near Catalytic Metal Centers in Metal-Organic Frameworks》 was written by Yan, Wei; Li, Shenhui; Yang, Tao; Xia, Yucong; Zhang, Xinrui; Wang, Chao; Yan, Zier; Deng, Feng; Zhou, Qianghui; Deng, Hexiang. Quality Control of Tris(4-bromophenyl)amine And the article was included in Journal of the American Chemical Society in 2020. The article conveys some information:
The construction of a mol. vise by pairing a tritopic phenylphosphorus(III) linker and a monotopic linker in opposite positions within a metal-organic framework is reported. The angle between these linkers at metal sites is fixed upon changing the functionality in the monotopic linker, while the distance between them is precisely tuned. This distance within the mol. vise is accurately measured by 1H-31P solid-state NMR spectroscopy. This unveils the impact of the distance on catalytic performance without interference from electrostatic effects or changes in the angle of the ligand, which is unprecedented in classic organometallic complexes. In the experimental materials used by the author, we found Tris(4-bromophenyl)amine(cas: 4316-58-9Quality Control of Tris(4-bromophenyl)amine)
In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Quality Control of Tris(4-bromophenyl)amine
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary