二维网状冠醚配合物:[Na(B18-C-6)(H_2O)]_2[Ni(mnt)_2]的合成与晶体结构

Synthesis and Crystal Structure of Two-dimensional Network Complex:[Na (B18-C-6)(H_2O)]_2[-Ni(mnt)_2]

研究了苯并18-冠-6与Na_2[Ni(mnt)_2](mnt=丁二腈烯二硫醇阴离子,[C_2S_2(CN)_2]_2]^(2-))的反应,得到配合物:[Na(B18-C-6)(H_2O)]_2[Ni(mnt)_2].通过红外光谱、元素分析及X-射线单晶结构衍射对配合物进行表征.结果表明:该配合物为单斜晶系,空间群P2_1/n,晶体学数据:a=1.015 4(2),b=1.209 7(3),c=2.101 1(5)nm,β=101.085(3)°,V=2.532(6)nm^3,z=2,D_(calcd)=1.371 g/cm^3,F(000)=1092,R_1=0.040 8,wR_2=0.088 3.配合物由两个[Na(B18-C-6)(H_2O)]^+配阳离子和一个[Ni(mnt)_2]^(2-)配阴离子组成,配阴离子[Ni(mnt)_2]^(2-)中的氮原子与[Na(B18-C-6)(H_2O)]^+的钠原子成键,与钠原子配位的H_2O与冠醚氧原子通过氢键相互作用,形成了二维网状结构。

The Synthesis of B18-C-6 with Na_2[Ni(mnt)_2][mnt=1,2-dicyanoethene-1,2-dithiolate, C_2S_2(CN)_2^(2-)]was studied and the novel complex [-Na(B18-C-6)(H_2O)][Ni(mnt)_2]was characterized by melt point, IR and X-ray diffraction analysis. The complex belongs to monoclinic, space group P2_1/n with all dimensions.a=1.015 4(2),b=1.209 7(3),c=2.101 1(5)nm,α=90,β=101. 085 3,γ=90°V=2. 532(6)nm^3,Z=2,Dcalcd= 1. 371 g/cm^3,F(000)=1092,R_1=0. 040 8,wR_2=0.088 3. The title complex conists of two[Na(B18-C-6)(H_2O)]^+complex cations and a[Ni(mnt)_2]^(2-)complex anion. Na^+ion is not only coordinated by N atom from[Ni(mnt)_2]^(2-), but also by O atom from H_2O molecule. And there is one exists a kind of hydrogen bond between H_2O molecule in the complex cation and O atom in the crown ether.