摘要
The crystal structure of (C8H8)Sm(2,4-C7H11)(THF)(2,4-C7H11 = 2, 4-dimethylpentadienyl) , Mr=421. 8, has been determined which, belongs to monoclinic space group P21 with a = 8. 682(3), 6 = 10. 968(3), c=9. 744(3) (?) ,β= 104.24(2)°, V = 899. 3(4)(?)3, Z = 2, Dc=1. 66g/cm3, μc=33. 2cm-1, F(000) = 422 and final R = 0. 041 for 2021 observed reflections with I≥ 2σ(I). The 2,4-dimethylpentadienyl group is in "U " conformation. The carbon-carbon bond distances within the pentadienyl ligand fall essentially in two sets. The average distance of external C - C bonds is shorter than that of the internal bonds.
The crystal structure of (C8H8)Sm(2,4-C7H11)(THF)(2,4-C7H11 = 2, 4-dimethylpentadienyl) , Mr=421. 8, has been determined which, belongs to monoclinic space group P21 with a = 8. 682(3), 6 = 10. 968(3), c=9. 744(3) (?) ,β= 104.24(2)°, V = 899. 3(4)(?)3, Z = 2, Dc=1. 66g/cm3, μc=33. 2cm-1, F(000) = 422 and final R = 0. 041 for 2021 observed reflections with I≥ 2σ(I). The 2,4-dimethylpentadienyl group is in "U " conformation. The carbon-carbon bond distances within the pentadienyl ligand fall essentially in two sets. The average distance of external C - C bonds is shorter than that of the internal bonds.
基金
Project supported by the National Natutal Science Foundation of China.
