8-Aminoquinoline nickel dichloride and bis(cyclopentadienyl)zirconium dichloride (Cp_2ZrCl_2) were supportedsimultaneously on silica to produce branched polyethylene successfully by combined polymerization. The suppor...8-Aminoquinoline nickel dichloride and bis(cyclopentadienyl)zirconium dichloride (Cp_2ZrCl_2) were supportedsimultaneously on silica to produce branched polyethylene successfully by combined polymerization. The supportedpolymerization results showed that the molecular weight of polyethylene increased while the molecular weight distributionbecame wider and the molecular chains of oligomers remaning in the final solution became shorter as compared to theoligomers obtained in polymerization processes with pure 8-aminoquinoline nickel dichloride catalysis, as well as theCp_2ZrCl_2 and nickel combination system. With decreasing amount of Ni catalyst in the supported catalyst, the molecular chains of oligomers in the resulting solution became shorter, while α-olefin selectivity increased.展开更多
The treatment of the mixture of n-BuLi with 1 equiv.8-aminoquinoline in THF in situ,which reacted further with 1/3 equiv.of YbCl3 in THF,to give the homoleptic lanthanide amide ate complex Yb（NH-C9H6N）4Li（C4H8O）2...The treatment of the mixture of n-BuLi with 1 equiv.8-aminoquinoline in THF in situ,which reacted further with 1/3 equiv.of YbCl3 in THF,to give the homoleptic lanthanide amide ate complex Yb（NH-C9H6N）4Li（C4H8O）2（1）.The crystal structure was determined by X-ray diffraction and the following crystallographic data were obtained：C44H44N8O2YbLi,Mr = 896.85,monoclinic,space group C2/c,a = 7.8384（16）,b = 22.294（5）,c = 22.668（5）,β = 97.614（5）°,V = 3926.3（14）3,Z = 4,Dc = 1.517 g/cm3,F（000）= 1812,μ（MoKα）= 2.431 mm-1,R = 0.0542 and wR = 0.1523 for 3372 observed reflections with I 2σ（I）.The structure of molecule 1 consists of one ytterbium atom,one lithium atom,four 8-aminoquinoline ligands and two THF molecules.The ytterbium atom is coordinated by eight nitrogen atoms of four 8-aminoquinoline ligands,forming a distorted dodecahedral geometry.展开更多
基金This work was also supported by the Core Research for Engineering Innovation KGCX2-203 of the Chinese Academy of Sciences, National Natural Science Foundation of China (No. 20272062) and the "One Hundred Talents" Fund foWen-Hua Sun.
文摘8-Aminoquinoline nickel dichloride and bis(cyclopentadienyl)zirconium dichloride (Cp_2ZrCl_2) were supportedsimultaneously on silica to produce branched polyethylene successfully by combined polymerization. The supportedpolymerization results showed that the molecular weight of polyethylene increased while the molecular weight distributionbecame wider and the molecular chains of oligomers remaning in the final solution became shorter as compared to theoligomers obtained in polymerization processes with pure 8-aminoquinoline nickel dichloride catalysis, as well as theCp_2ZrCl_2 and nickel combination system. With decreasing amount of Ni catalyst in the supported catalyst, the molecular chains of oligomers in the resulting solution became shorter, while α-olefin selectivity increased.
基金supported by the Ph.D.Programs Foundation (2009BS01)Youth Innovation Foundation (2010SZDYY12)College Students Innovation Foundation (2010SZDX11) of Suzhou Vocational University
文摘The treatment of the mixture of n-BuLi with 1 equiv.8-aminoquinoline in THF in situ,which reacted further with 1/3 equiv.of YbCl3 in THF,to give the homoleptic lanthanide amide ate complex Yb（NH-C9H6N）4Li（C4H8O）2（1）.The crystal structure was determined by X-ray diffraction and the following crystallographic data were obtained：C44H44N8O2YbLi,Mr = 896.85,monoclinic,space group C2/c,a = 7.8384（16）,b = 22.294（5）,c = 22.668（5）,β = 97.614（5）°,V = 3926.3（14）3,Z = 4,Dc = 1.517 g/cm3,F（000）= 1812,μ（MoKα）= 2.431 mm-1,R = 0.0542 and wR = 0.1523 for 3372 observed reflections with I 2σ（I）.The structure of molecule 1 consists of one ytterbium atom,one lithium atom,four 8-aminoquinoline ligands and two THF molecules.The ytterbium atom is coordinated by eight nitrogen atoms of four 8-aminoquinoline ligands,forming a distorted dodecahedral geometry.
