摘要
标题化合物Yb(Pi)_3(Bl5C5)_2·2H_2O·CH_3CN(I)及Y(Pi)_3(Bl5C5)_2·2H_2O·CH_3CN(Ⅱ)为同晶结构,均为3斜晶系,空间群为P-对晶体(I),a=12.753(1)A,b=13.810(2)A.c=19.609(2)A,α=81.37(3)°,β=71.58(3)°,γ=70.71(2)°,Z=2.D_c=1.468g·cm ̄(-3),μ=15.928cm ̄(-1)(MoKα),M_r=1471,04,F(000)=745,R=0.031,R_w=0.039;对晶体(Ⅱ),α=12.785(1)A,b=13.850(3)A,c=19.571(2)A,α=81.05(3)°,β=70.92(2)°,γ=70.62(3)°,Z=2,Dc=l.485g·cm ̄(-3),μ=10.441cm ̄(-1)(MoKα),M_r=1386.9l,F(000)=7l4,R=0.065,R_w=0.078.测定结果表明,中心稀土离子Yb ̄(3+)(或Y ̄(3+)直接与3个苦味酸阴离子和2个水分子配位,此水化镱(或钇)苦味酸盐通过水桥氢键与冠醚Bl5C5相联而形成一个大的疏水性?
The title complexes of Yb(Pi)_3(B15C5)_2.2H_2O.CH_3CN(I)and Y(Pi)_3(B15C5)_2 .2H_2O .CH_3CN(Ⅱ)are homomorphism ,triclinic with space group P_1. Crystal(I),a=12.753(1),b=13.810(2),c=19.6092),α=81.37(3)°,β=71. 58(3)°,γ=70. 71(2)°,Z=2,D_c=1.468g.cm ̄(-3),μ=15.928cm ̄(-1)(MoKα),M_r =1471.04,F(000)=745,R=0.031,R_w=0.039;Crystal(Ⅱ),α=12.785(1),b=13.850(3),c=19.571,α=81.05(3)°,β=70.92(2)°,γ=70.62(3)°,Z=2,Dc=1.485g·cm ̄(-3),μ=10.443cm ̄(-1)(MoKα),M_r=1386.91,F(000) =714,R=0.065,R_w=0.078. The Yb ̄(3+)(or Y ̄(3-))is bound with three picrate anions and two water molecules directly ,and the hydrated ytterbium(yttrium)picrate associates with the two B15C5 molecules through hydrogen binding interaction.
出处
《四川大学学报(自然科学版)》
CSCD
1995年第3期319-328,共10页
Journal of Sichuan University(Natural Science Edition)
关键词
晶体
分子结构
稀土苦味酸盐
冠醚
配合物
crystal
molecular structure
rare earth picrate
crown
complex