The heteroleptic dmit complex Et 4N 2 Ni 2(C 2S 4)(C 3S 5) 2 has been prepared by the reaction of NiCl 2·H 2O with Na 2dmit, NaSC 2H 4OH in the MeOH solution. The compound has been characteriz...The heteroleptic dmit complex Et 4N 2 Ni 2(C 2S 4)(C 3S 5) 2 has been prepared by the reaction of NiCl 2·H 2O with Na 2dmit, NaSC 2H 4OH in the MeOH solution. The compound has been characterized by X ray diffraction study, IR and UV Vis spectroscopy. Crystallographic data : space group: P2 1/n, a=11.843(2), b=11 079(1), c = 15.404(1) , β=110.33(1)°, V = 1895.1 3, Z=2, D c =1.62 g/cm 3 , μ =17.6 cm -1 , F (000)=956, R=0.052, R w =0.061. In the structure of the title complex, the tto (tto=tetrathioxalato) ligand in bridging form is chelated to two nickel atoms and dmit (dmit=1,3 dithiole 2 thione 4,5 dithiolate) ligands coordinated to nickel atoms.展开更多
5,6,7-Trihydroquinolin-8-one was condensed with the corresponding benzidine to give N,N′-bis（5,6,7-trihydroquinolin-8-ylidene）-[1,1′-biphenyl]-4,4′-diamine derivatives（L1–L3）. The ligands were reacted with two...5,6,7-Trihydroquinolin-8-one was condensed with the corresponding benzidine to give N,N′-bis（5,6,7-trihydroquinolin-8-ylidene）-[1,1′-biphenyl]-4,4′-diamine derivatives（L1–L3）. The ligands were reacted with two equivalents of Ni Cl2·6H2O in a mixture of Et OH and CH2Cl2 to afford the corresponding dinickel（II） chloride complexes（Ni1-Ni3）. The organic compounds were completely characterized, whilst the bi-metallic complexes were characterized by FTIR spectra and elemental analysis. These nickel complexes exhibited high activities towards ethylene polymerization in the presence of either MAO or Me2AlCl, maintaining a high activity over a prolonged period. The obtained polyethylenes were confirmed as having low molecular weights by GPC analysis.展开更多
文摘The heteroleptic dmit complex Et 4N 2 Ni 2(C 2S 4)(C 3S 5) 2 has been prepared by the reaction of NiCl 2·H 2O with Na 2dmit, NaSC 2H 4OH in the MeOH solution. The compound has been characterized by X ray diffraction study, IR and UV Vis spectroscopy. Crystallographic data : space group: P2 1/n, a=11.843(2), b=11 079(1), c = 15.404(1) , β=110.33(1)°, V = 1895.1 3, Z=2, D c =1.62 g/cm 3 , μ =17.6 cm -1 , F (000)=956, R=0.052, R w =0.061. In the structure of the title complex, the tto (tto=tetrathioxalato) ligand in bridging form is chelated to two nickel atoms and dmit (dmit=1,3 dithiole 2 thione 4,5 dithiolate) ligands coordinated to nickel atoms.
基金financially supported by the National Natural Science Foundation of China (Nos. 21374123 and U1362204)
文摘5,6,7-Trihydroquinolin-8-one was condensed with the corresponding benzidine to give N,N′-bis（5,6,7-trihydroquinolin-8-ylidene）-[1,1′-biphenyl]-4,4′-diamine derivatives（L1–L3）. The ligands were reacted with two equivalents of Ni Cl2·6H2O in a mixture of Et OH and CH2Cl2 to afford the corresponding dinickel（II） chloride complexes（Ni1-Ni3）. The organic compounds were completely characterized, whilst the bi-metallic complexes were characterized by FTIR spectra and elemental analysis. These nickel complexes exhibited high activities towards ethylene polymerization in the presence of either MAO or Me2AlCl, maintaining a high activity over a prolonged period. The obtained polyethylenes were confirmed as having low molecular weights by GPC analysis.
