阳离子- π相互作用————————[K(DI18C6)]2[M(SCN)4] (M=Pd,Pt)的合成与结构 研究

合成了二苯并18冠6与Pd,Pt生成的新颖配合物：[K(DI18C6)]2[Pd(SCN)4](1),(K(DB18C6)]2[Pt(SCN)4](2)，并通过元素分析、红外光谱、单晶X射线衍射进行了表征，两个配合物均为三斜晶系，空间群P-1.1的晶体学数据：a=087375(17)nm,b=1.1990(2)nm,C=1.3180(3)nm,α=73.56(3)°,β=99.90(3)°,γ=82.34(3)°,V=1.2986(4)nm^3,Z=1,F(000)=584,R1=0.0752ωR2=0.1660.2的晶体学数据：a=0.8553(5)nm,b=1.3127(3)nm,c=1.1819(3)nm,α=106.21(2)°,β=82.77(3)°,γ=99.72(3)°V=1.2516(8)nm^3,Z=1,F(000)=818,R1=0.0254,ωR2=0.0682.1,2均由两个[K(DB18C6)^+配离子和一个[M(SCN)4]^2+配阴离子组成。在固态、配合物两个分子的[K(DB18C6)]^+和[M(SCN)4]^2-通过K^+-π相互作用形成假一维无限链状结构。

Cation-

Novel dibenzo-18 crown -6 (DB18C6) complexes: [K(DI18C6)]2[Pd(SCN)4] (1), (K(DB18C6)]2[Pt(SCN)4](2) have been synthesized and characterized by IR, X-ray diffraction analysis. The complexes are all triclinic, space group P-1. The crystal data of 1: a=0873 75(17)nm, b=1.199 0(2) nm, C=1.318 0(3)nm, α=73.56(3)°,β=99.90(3)°,γ=82.34(3)°, V=1. 298 6(4) nm^3, Z=1, F(000)=584, R1=0.075 2 ωR2= 0.166 0. The crystal data of 2:a=0.855 3(5) nm, b=1.312 7(3) nm, c=1.181 9(3) nm, α=106. 21(2)°,β=82.77(3)°,γ=99.72(3)° V=1.251 6(8) nm^3, Z=1, F(000)=818, R1=0.025 4, ωR2=0.068 2. In the solid state, they display a quasi- one- dimensional infinite chain of two [K(DB18C6)^+ complex cations and a [M(SCN)4]^2+ complex anion bridged by K^+ -π interactions between adjacent [K(DB18C6)^+units.