Synthesis, characterization and butadiene polymerization studies of cobalt(II) complexes bearing bisiminopyridine ligand
作者:Dirong Gong、Baolin Wang、Hongguang Cai、Xuequan Zhang、Liansheng Jiang
DOI:10.1016/j.jorganchem.2011.01.015
日期:2011.4
complexes show moderate to high conversion (42–99%) in butadiene polymerization, producing polybutadiene with tunable cis-1,4 structure (77.5–97%) and controllable molecular weight and molecular weight distribution. The catalytic activity, selectivity as well as the molecular weight and molecular weight distribution of the resultant polymer are found to be dependent on the size and nature of substituents
一系列的2,6-双(亚氨基)吡啶基钴(II)通式的络合物[2,6-(ARN CME)2 ç 5 ħ 3 N]氯化钴2(AR = -C 6 H ^ 5,图3a ; 2-MEC 6 ħ 4,3B ; 2-ETC 6 ħ 4,图3c ; 2-我PRC 6 ħ 4,3D ; 2,6-我镨2 ç 6 ħ 3,图3e ; 4-我PRC 6 ħ 4,3f ; 4-FC 6 H ^ 4,3克; 4-CF 3 C ^ 6 ħ 4,3H ; 2-FC 6 H ^ 4,3I ; 2,6-F 2 C ^ 6 ħ 3,3J ; 2-ME-4-FC 6 H ^ 3,3K和2,6--ME 2 -4-FC 6 H ^ 2,3升)和[2,6-(ARN CH)2 C ^ 5 ħ 3 N]氯化钴2(AR = –C 6ħ 5,3米; 2-ETC 6 ħ 4,3N和4-我PRC 6 ħ 4,10-30)已被合成和表征。X射线晶体学进一步证实了新配合物3a,3f