[Ag(his)_2]NO_3·0.5H_2O的合成和晶体结构  

Synthesis and Crystal Structure of Compound[Ag(His)_2]NO_3·0.5H_2O

作　　者：张立梅[1,2] 陈林[1] 冯小虎[1] 兰小兵[1] 刘平[2] 

机构地区：[1]云南民族大学化学与生物技术学院,云南昆明650031 [2]中科院福建物质结构研究所,福建福州350002

出　　处：《云南民族大学学报（自然科学版）》2008年第4期340-342,共3页Journal of Yunnan Minzu University:Natural Sciences Edition

摘　　要：利用扩散法合成了标题化合物[Ag(H is)2]NO3.0.5H2O(1),X射线单晶衍射分析结果表明,标题化合物分子式为:AgC12H19N7O7.50,M r=489.21,属正交晶系,P2(1)2(1)2空间群,晶胞参数:a=0.9675(3)nm,b=3.4113(9)nm,c=0.52193(13)nm,α=90,°β=90,°γ=90,°V=1.72227(8)nm3,Z=4,Dcalc=1.866 gcm-3,μ=1.228 mm-1,F(000)=984.0,R1=0.0272,wR=0.0639,化合物由配离子[Ag(his)2]+,1个NO3-阴离子和0.5个水分子组成:中心银(Ⅰ)离子采用二配位的构型,2个L-组氨酸分别通过咪唑环中的2个N原子与Ag(Ⅰ)配位.化合物通过分子间氢键作用形成超分子结构.The title compound [Ag （his）2 ] NO3 · 0. 5H2O has been synthesized through the reaction of L -his- tidine, nitrate ion with lag （His）2 ] NO3·0. 5H2O in the mixture solution of water and ethanol, which is character- ized by the elemental analysis and the X -ray single crystal diffraetometer analysis. The compound is triclinic, space group P-1, a =0. 9675 （3） nm,b =3. 4113 （9） nm,e =0. 521 93（13） nm,α =90°, β =90°, Y =90°, V= 1.72227 （8） nm3 ,Z =4,Dcak = 1. 866 gem-3 ,μ = 1. 228 mm-1 ,F（000） =984. 0,R1 =0. 027 2,wR =0. 063 9; the compound consists of one lag （his）2 ]^＋ cation, one NO3 - anions, half cocrystallized H20. The central metal ion Ag （I） is surrounded by two N atoms from L- histidine, in a slightly distorted octahedral geometry. In this compound, two - dimensional supramolecular network is formed through intermoleeular hydrogen bonding interactions.

关 键 词：合成 咪唑 L-组氨酸 Ag(Ⅰ)配合物 X射线单晶衍射 晶体结构 

分 类 号：O621.3[理学—有机化学]