Liu, Zheng-Tang published the artcileTitanium, aluminum and zinc complexes containing diamine-bis(benzotriazole phenolate) ligands: Synthesis, structural characterization and catalytic studies for ring-opening polymerization of ¦Å-caprolactone, Synthetic Route of 140-28-3, the publication is Journal of Molecular Structure (2017), 395-403, database is CAplus.
Structurally diverse metal complexes bearing diamine-bis(benzotriazole phenolate) (DiBTP) ligands were synthesized and fully characterized by single crystal x-ray crystallog. The reaction of Ti(OiPr)4 with C8MEADiBTP-H2 or C8BEADiBTP-H2 (1.0 mol equivalent) generated the monomeric Ti alkoxy complexes [(C8MEADiBTP)Ti(OiPr)2] (1) and [(C8BEADiBTP)Ti(OiPr)2] (2), resp. Also, C8BEADiBTP-H2 reacted with 2.0 molar equivalent of AlMe3 to give the tetracoordinated di-Al complex [(C8BEADiBTP)Al2Me4] (3). Zn complex [(C8BEADiBTP)Zn2Et2] (4) could be obtained by the alkane elimination of ZnEt2 (2.0 equiv) with C8BEADiBTP-H2 as the pro-ligand under similar synthetic methods in good yield. Single-crystal x-ray diffraction indicates that 3 is a bimetallic Al di-Me complex with a tetradentate C8BEADiBTP moiety chelating two metal atoms, whereas complex 4 displays the dinuclear feature containing both tetra- and pentacoordinated Zn atoms bonded by one ONNON-pentadentate C8BEADiBTP ligand. Catalytic studies for ring-opening polymerization of ¦Å-caprolactone of complex 1–4 were systematic explored; the comparative studies of such polymerization are also discussed.
Journal of Molecular Structure published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Synthetic Route of 140-28-3.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia