三维超分子化合物[Cu^Ⅰ (en) 2 ] [ PW2^ⅤW10^ⅥO39 ] (Hen) 2· 2H2O的合成与表征

Hydrothermal synthesis and crystal structure of 3D supramolecular compound:{[Cu~Ⅰ(en)_2]PW_2~ⅤW_(10)~ⅥO_(39)}(Hen)_2·2H_2O

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.