POLYDENTATE HETEROATOM LIGAND CONTAINING METAL COMPLEXES, CATALYSTS AND METHODS OF MAKING AND USING THE SAME
申请人:Klosin Jerzy
公开号:US20090221770A1
公开(公告)日:2009-09-03
Metal complexes comprising certain polydentate heteroatom containing ligands, catalysts, and coordination polymerization processes employing the same are suitably employed to prepare polymers having desirable physical properties.
US8071701B2
申请人:——
公开号:US8071701B2
公开(公告)日:2011-12-06
US8383753B2
申请人:——
公开号:US8383753B2
公开(公告)日:2013-02-26
Stereorigid OSSO-Type Group 4 Metal Complexes in the Ring-Opening Polymerization of <i>rac</i>-Lactide
作者:Rosita Lapenta、Antonio Buonerba、Assunta De Nisi、Magda Monari、Alfonso Grassi、Stefano Milione、Carmine Capacchione
DOI:10.1021/acs.inorgchem.6b02987
日期:2017.3.20
the case of 2, by single-crystal X-ray diffraction experiments. These complexes show a fac-fac ligand wrapping and a cis relationship between the other two monodentate ligands; zirconium and hafnium complexes 1–3 and 5 are configurationally stable, whereas titanium complex 4 is fluxional in solution at room temperature. The complexes tested in the ring-opening polymerization (ROP) of racemic-lactide showed
一系列OSSO X } M(OR)2(X = R = t Bu,M = Zr(1); X =枯基,M = Zr,R = t Bu(2); X =枯基,M = Ti,R = i Pr(4); X =枯基,M = Hf,R = t Bu(5))和OSSO X } 2 Zr(X = Cl(3))),由支持ø -亚苯基桥连的双(苯酚)配体(OSSO TBU - ħ = 6,6' - ((1,2-亚苯基二(硫))双(亚甲基))二(2,4-二-叔-丁酚); OSSO Cum - H= 6,6'-(((1,2-亚苯基双(硫代二烷基))双(亚甲基))双(2,4-双(2-苯基丙烷-2-基)苯酚);本文描述了OSSO C1 - H= 6,6'-(((1,2-亚苯基双(硫代二烷基))双(亚甲基))双(2,4-二氯苯酚))。配合物1 - 5分别容易地通过将前配体和合适的均配型金属前体之间σ键复分解反应而获得。与OSSO