含有二维十二核水簇的银配合物的合成及结构表征

以Hpda[3-(3-吡啶基)乙烯酸]为配体、AgNO_3为金属源,常温下合成了一个新颖的Ag配合物[Ag_2(pda)_2(H_2O)_3]n.通过往AgNO_3和Hpda的悬浊液中滴加氨水,室温下随着氨水的挥发澄清液中析出无色的晶体,所得产物经红外、XRD及热重表征.该分子中含有2个Ag中心,每个Ag中心通过pda配体及Ag—Ag键相连形成花生形状的一维链,该链进一步被Ag—Ag键连接形成双链结构.游离的水分子之间相互作用形成二维层状水簇,呈有趣的L4(4)12(8)形状.水分子与pda配体中的羧基氧通过氢键相互作用,将一维双链延伸成三维网络结构.

The structure and characterization of silver compound containing tetradecamer water clusters

A novel Ag(Ⅰ) compound,[Ag2 (pda)2 (H2 O)3]n [Hpda =3-(3-pyridyl) acrylate acid],was synthesized by adding aqueous NH3 to the suspension of AgNO3 and Hpda,and the clear liquor precipitate out colorless crystals with the volatility of NH3 at room temperature.The obtained product was characterized with IR,XRD and TGA.Two Ag centers exist in the molecule,and each Ag center is connected through the pda ligands and Ag-Ag bonds to form 1D peanut-shaped chains,which are further linked by Ag-Ag bonds to form double-chains.The disociative water molecules interact with each other to form 2D dodecamer water network,presenting an intersting L4(4)12(8) shape.The water clusters also interact with the carboxylic O atoms of pda ligands through hydrogen bonds,which extends the 1D chain to 3D framework.