摘要
采用水热合成法制备了三维超分子化合物[Cu^Ⅰ (en) 2 ] [ PW2^ⅤW10^ⅥO39 ] (Hen) 2· 2H2O(en为乙二胺).通过元素分析、红外光谱和X射线单晶衍射确定了化合物的组成和晶体结构.结果表明:晶体属于三斜晶系,P-1空间群;晶胞参数a=1.09091(9)nm,b=1.16257(10)nm,C=1.94343(15)nm,α=81.38^*,β=84.47^*,γ=65.29^*,V=2.2122(3)nm^3,Z=2,R1=0.0804,wR2=0.2003.标题化合物由1个α-Keggin型杂多阴离子单元、1个[Cu(en)2]^+配阳离子、2个质子化的en分子和2个结晶水构成.多阴离子单元通过共用端氧的方式形成无限延展的一维链,一维链通过复杂的氢键网络堆积成具有哑铃型孔道的三维有机-无机超分子化合物.
A novel supramolecular compound [Cu^Ⅰ (en) 2 ] [ PW2^ⅤW10^ⅥO39 ] (Hen) 2· 2H2O was synthesized by hydrothermal method and structurally characterized by elemental analysis, IR spectrum and single crystal X- ray diffraction. X-ray diffraction result reveals that title compound crystallizes in the triclinic, space group P - 1 with a=1.09091(9)nm,b=1.16257(10)nm,C=1.94343(15)nm,α=81.38^*,β=84.47^*,γ=65.29^*,V=2.2122(3)nm^3,Z=2,R1=0.0804,wR2=0.2003. Title compound was composed of one a Keggin unit PW2^ⅤW10^ⅥO93 ,one [Cu^Ⅰ(en)2]^+ coordination cation, two protonated ethylenediamine molecular ions and two water molecules. Polyoxoanions were liked into an infinite one-dimensional chain by sharing oxygen atoms. Such one-dimensional chains pack into three-dimensionaiorganic-inorganic supramolecular compound with one-dimensional dumbbell channels by complex hydrogen bonding interactions.
出处
《东北师大学报(自然科学版)》
CAS
CSCD
北大核心
2008年第1期65-70,共6页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(39970842)
东北师范大学分析测试基金资助项目