糖精铜水合物[Cu（C7H4NO3S）2（H2O）4]·2H2O的合成及晶体结构

首次以糖精钠、丙氨酸和硫酸铜为原料合成得到糖精铜蓝色块状晶体,采用红外光谱、X-射线单晶衍射对配合物的晶体结构进行了表征。证明该晶体属单斜晶系,空间群为P21/c,晶胞参数为：a=8.4012（19）,b=16.3605（18）,c=7.3479（16）,α=90°,β=100.84（2）°,V=991.49（15）3,Z=2,Dc=1.794g.cm-3,F（000）=550,R=0.0309。结构分析表明,中心Cu2＋与4个O原子和2个N原子配位,处于四角双锥八面体配位环境中,4个水分子在赤道平面上与Cu2＋配位,晶胞中还包含有2个游离的结晶水,形成了含6个水分子的结晶物。

Synthesis and Crystal Structure of Tetraaquabis（saccharinato-N） Copper（Ⅱ） Dihydrate Compound [Cu（C7H4NO3S）2（H2O）4]·2H2O

Tetraaquabis（saccharinato-N） copper（Ⅱ） dihydrate compound Cu（C7H4NO3S）2（H2O）4]·2H2O is synthesized by using saccharin sodium,alanine,and copper sulfate as raw materials.And its crystal structure is determined by infrared spectrometry and X-ray diffraction single crystal analysis.The crystal is of monoclinic,space group P21/c,a=8.4012（19）,b=16.3605（18）,c=7.3479（16）,α=90°,β=100.84（2）°,V=991.49（15）3,Z=2,Dc=1.794 g·cm-3,F（000）=550,R=0.0309.Center Cu2＋ is located in the four-corner bipyramid coordination environment with coordination of four atoms O and two atoms N.Four molecules H2O coordinate to Cu2＋ above the equatorial plane,and the crystal cell contains two free crystal water molecules,so it forms the six-water crystal compound.