The reaction of NdCl_3 with lithium methylnaphthalene in 1:2 mole ratio in THF generates black powder. The powder reacts with cyclooctatetraene(COT)in THF to form the title complex.[Li(THF)_4Nd(C_8H_8)_2]· 2THF c...The reaction of NdCl_3 with lithium methylnaphthalene in 1:2 mole ratio in THF generates black powder. The powder reacts with cyclooctatetraene(COT)in THF to form the title complex.[Li(THF)_4Nd(C_8H_8)_2]· 2THF crystallizes in the monoclinic space group P2/c with unit-cell dimensions a=1.7858(7)nm, h=1.3243(4)nm,c=1.8086(6)nm.β=106.52(4)°,V=4.10 nm^3 and D_c=1.268 g/cm^3 for Z=4. F(000)=1660,R=0.0774,R_n=0.0733.The complex consists of discrete ion-pair and two THF molecules adduct.In the anion,the neodymium atom is coordinated by two COT rings.The structure of the cation shows that the lithium atom is attached with THF molecules only.展开更多
The title complex was prepared from the reaction of NdClLi0.3 and C8H8, its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P21/c with cell dimension...The title complex was prepared from the reaction of NdClLi0.3 and C8H8, its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P21/c with cell dimensions o = 11. 819(3), 6=12.651(3), c=13. 478(3)A, β=122.99(2)°, Mr = 856. 00, Z = 2, Dc=1. 68g/cm3, F(000) = 636. 89, V = 1690. 33A3. The structure was solved by direct methods and Fourier techniques. Least squares refinement on the basis of 1842 observed reflections led to final R = 0. 038 and Rw = 0. 040. The molecule is a dimer of C3H8NdCl(THF)2 bridged by two Cl atoms with Nd -Cl bond lengths of 2. 832(2) A and 2. 917(3)A.展开更多
The polymerization of acrylonitrile initiated by organolanthanide complexes alone is studied for the first time. The effect of polymerization conditions on catalytic activity of the title complex and molecular weight ...The polymerization of acrylonitrile initiated by organolanthanide complexes alone is studied for the first time. The effect of polymerization conditions on catalytic activity of the title complex and molecular weight of the polymers produced have been studied.展开更多
文摘The reaction of NdCl_3 with lithium methylnaphthalene in 1:2 mole ratio in THF generates black powder. The powder reacts with cyclooctatetraene(COT)in THF to form the title complex.[Li(THF)_4Nd(C_8H_8)_2]· 2THF crystallizes in the monoclinic space group P2/c with unit-cell dimensions a=1.7858(7)nm, h=1.3243(4)nm,c=1.8086(6)nm.β=106.52(4)°,V=4.10 nm^3 and D_c=1.268 g/cm^3 for Z=4. F(000)=1660,R=0.0774,R_n=0.0733.The complex consists of discrete ion-pair and two THF molecules adduct.In the anion,the neodymium atom is coordinated by two COT rings.The structure of the cation shows that the lithium atom is attached with THF molecules only.
文摘The title complex was prepared from the reaction of NdClLi0.3 and C8H8, its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P21/c with cell dimensions o = 11. 819(3), 6=12.651(3), c=13. 478(3)A, β=122.99(2)°, Mr = 856. 00, Z = 2, Dc=1. 68g/cm3, F(000) = 636. 89, V = 1690. 33A3. The structure was solved by direct methods and Fourier techniques. Least squares refinement on the basis of 1842 observed reflections led to final R = 0. 038 and Rw = 0. 040. The molecule is a dimer of C3H8NdCl(THF)2 bridged by two Cl atoms with Nd -Cl bond lengths of 2. 832(2) A and 2. 917(3)A.
文摘The polymerization of acrylonitrile initiated by organolanthanide complexes alone is studied for the first time. The effect of polymerization conditions on catalytic activity of the title complex and molecular weight of the polymers produced have been studied.
