There could be a coordination bond between the silver atom and the hydroxyl group of tannic acid, which stabilize the Ag nanoparticles in the spatial reticulate structure of tannic acid.
纳米银颗粒与羟基发生电荷吸附作用，固定在鞣酸的空间网状结构中，稳定存在。
The crystal structure has been determined by X ray single crystal diffraction, showing a distorted trigonal bipyramidal configuration with five coordination for the central tin atom.
通过元素分析、 红外光谱和氢核磁共振谱对其结构进行了表征。用X-射线单晶衍射测定了该化合物的晶体结构。
Results of analysis with IR and ESCA showed that ring -shaped conjugated structures exist in the films. Copper atom may be linked to the polymer either by covalent bond or coordination bond.
红外光谱和电子能谱的分析结果表明：聚合物薄膜中含有环状共轭结构，铜与聚合物以共 价键、 配 位键结合。
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