0引言多酸盐是一大类多核配合物[1],具有丰富的拓扑结构、氧化还原化学及光化学方面等多样性的特点,已成为目前研究的热点领域之一。多酸具有较强的接受电子的能力,是一类优良的电子受体,它可以与无机分子、有机分子、离子等结合成结构新颖、性能独特的配位化合物[2-10]。利用有机分子和多金属氧酸盐作为基本单元,合成具有高维超分子网络结构的有机-无机杂化材料一直备受人们关注[11-14],该类化合物在主客体化学、催化、医药以及 0 Introduction Polyoxalates are a large group of multi-nuclear complexes [1], which has many characteristics such as topological structure, redox chemistry and photochemistry. It has become one of the hot topics in current research. Polyacids have a strong ability of accepting electrons and are excellent electron acceptors. They can be combined with inorganic molecules, organic molecules, ions and the like to form new and unique coordination compounds [2-10]. The use of organic molecules and polyoxometalates as basic units has attracted much attention for the synthesis of organic-inorganic hybrid materials with high-dimensional supramolecular network structure [11-14]. These compounds are widely used in host-guest chemistry, catalysis, medicine and