A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl· 4H2O (bbimp=2,6 bis[bis(2 benzimidazolylmethyl)]aminomethyl 4 methylpheno)(o)had been synthesized and characterized by elementary anal...A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl· 4H2O (bbimp=2,6 bis[bis(2 benzimidazolylmethyl)]aminomethyl 4 methylpheno)(o)had been synthesized and characterized by elementary analysis, IR and UV. The molecular structure of the title complex was determined by X ray single crystal diffraction method. The crystal is monoclinic, space group P21/n with a=20.803(2)? , b=30.708(3)? , c=20.959(2)? , β =105.776(2)° , Z=8, V=12885(2)? 3, Dx=1.132Mg· m- 3, μ =0.755mm- 1, F(000)=4592, R1=0.1267, S=1.376. It was showed that the nickel? cation is the central ion of a distorted octahedral coordination with two N belonging to benzimidazole, a bridging phenolate O, a N of tertiary amine, a Cl anion, and an O of an ethanol molecule. Two nickel? cations in a molecular structure had the same coordinated environment. CCDC: 197601.展开更多
A series of bridged ligand 4,4′-methylene-bis [2,6-dialkyl-N-(2-phenylmethylene)-anil] was efficiently synthesized by the condensation reaction of 4,4′-methylene-bis(2,6-disubstituted aniline) and salicyl aldehyde.T...A series of bridged ligand 4,4′-methylene-bis [2,6-dialkyl-N-(2-phenylmethylene)-anil] was efficiently synthesized by the condensation reaction of 4,4′-methylene-bis(2,6-disubstituted aniline) and salicyl aldehyde.They easily coordinated with Ni (Ⅱ) to form the title complexes,which were characterized by IR spectroscopy and elemental analysis.The complexes show good activities for vinyl polymerization of norbornene with methylalumoxane (MAO) as co-catalyst.The variations of complexes and catalytic parameters were investigated along with viscosimetric measurement of resultant polynorbornenes.展开更多
文摘A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl· 4H2O (bbimp=2,6 bis[bis(2 benzimidazolylmethyl)]aminomethyl 4 methylpheno)(o)had been synthesized and characterized by elementary analysis, IR and UV. The molecular structure of the title complex was determined by X ray single crystal diffraction method. The crystal is monoclinic, space group P21/n with a=20.803(2)? , b=30.708(3)? , c=20.959(2)? , β =105.776(2)° , Z=8, V=12885(2)? 3, Dx=1.132Mg· m- 3, μ =0.755mm- 1, F(000)=4592, R1=0.1267, S=1.376. It was showed that the nickel? cation is the central ion of a distorted octahedral coordination with two N belonging to benzimidazole, a bridging phenolate O, a N of tertiary amine, a Cl anion, and an O of an ethanol molecule. Two nickel? cations in a molecular structure had the same coordinated environment. CCDC: 197601.
文摘A series of bridged ligand 4,4′-methylene-bis [2,6-dialkyl-N-(2-phenylmethylene)-anil] was efficiently synthesized by the condensation reaction of 4,4′-methylene-bis(2,6-disubstituted aniline) and salicyl aldehyde.They easily coordinated with Ni (Ⅱ) to form the title complexes,which were characterized by IR spectroscopy and elemental analysis.The complexes show good activities for vinyl polymerization of norbornene with methylalumoxane (MAO) as co-catalyst.The variations of complexes and catalytic parameters were investigated along with viscosimetric measurement of resultant polynorbornenes.
