新型含银配合物的合成与表征

来源期刊：黄金2010年第6期

论文作者：方勇 解强 黄翠英

文章页码：3 - 6

关键词：Anderson型钼氧酸盐阴离子； 银离子； 配合物； 合成； 表征

Key words：Anderson type molybdate anion； silver ion； polymer； synthesis； characterization

摘    要：合成了一种由银直接连接Anderson型钼氧酸盐阴离子形成的新型二维配合物,并用单晶X射线衍射仪测定了其晶体结构,用元素分析仪及红外光谱等进一步表征了化合物的结构。含银配合物为三斜晶系,P-1空间群,晶胞参数为a=1.1676(3)nm,b=1.2205(4)nm,c=1.2566(6)nm;α=95.313(5)°,β=113.974(5)°,γ=117.079(3)°;V=1.3695(9)nm³,Z=1。配合物中,相邻的4个{Fe(OH)₆Mo₆O₁₈}^3-之间存在两种连接方式,一种是被孤立的{AgO₆}八面体通过端氧沿b轴连接起来;另一种则是被2个共边相连的{AgO₆}八面体通过端氧沿b轴桥连起来。这两种连接方式沿c轴方向交替排列形成了二维网状结构。

Abstract: A new two-dimension coordination polymer by connecting silver directly with Anderson type molybdate anion,(NH₄)₃{Ag[Fe(OH)₆Mo₆O₁₈]}{Ag₂(H₂O)₂[Fe(OH)₆Mo₆O₁₈]}·11H₂O has been synthesized in aqueous.The structure is determined by single crystal X-ray diffraction and characterized by elemental analysis,IR spectroscopy and thermogravimetric analysis.The polymer is triclinic,space group P-1,its crystal data is a = 1.167 6(3) nm,b = 1.220 5 (4) nm,c = 1.256 6 (6) nm,α = 95.313 (5) °,β = 113.974 (5) °,γ = 117.079(3) °,V = 1.369 5(9) nm³,Z = 1.There are two different link modes.One is four adjacent Anderson anions linked through one {AgO₆} octahedron via terminal oxygen atoms along the b-axis,and the other one is four adjacent Anderson anions linked through two {AgO₆} octahedron via terminal oxygen atoms along the b-axis.The two different modes are arranged alternately along the c-axis to form a 2D network.