Synthesis and Properties of V6O16Cu(C4H4N2)2·(H2O)0.22(1): Charge Density Matching of a Metal-Segregated Layer Structure

A metal-segregated layered compound, containing square nets of
Cu(pyz)22+ and buckled V6O162- layers, has been synthesized using
hydrothermal techniques to have the composition V6O16Cu(C4H4N2)2·(H2O)0.22(1) (C4H4N2 = pyrazine, pyz). The Cu(II) square
nets are nearly regular and undergo an antiferromagnetic transition
at 8 K. In contrast to the plethora of recently synthesized metal−oxide clusters, chains, and networks in the VOx/M/L (M = late
transition element; L = organonitrogen ligand) system, this
compound is a relatively rare example that contains two different
metals distributed into distinct layers. An application of charge
density matching to form layered structures is postulated.

一种由Cu(pyz)22+的方形网格和扭曲的V6O162-层构成的金属分离多层化合物，已通过水热技术合成，其组成为V6O16Cu(C4H4N2)2·(H2O)0.22(1)（C4H4N2代表吡唑，pyz）。Cu(II)方形网格近乎规则，并在8 K时发生反铁磁性转变。与近期合成的VOx/M/L（M为后过渡金属；L为有机氮配体）体系中丰富的金属-氧化物簇、链和网络相比，此化合物是一个相对罕见的例子，其中包含两种不同的金属，且分别分布在不同的层中。据此推测，利用电荷密度匹配技术形成层状结构具有潜在应用价值。