Single crystals of the new disodium tricopper(II) tetrakis(hydrogenarsenate(V)) tetrahydrate, Na₂Cu₃(AsO₃OH)₄·4H₂O were grown under hydrothermal conditions. The compound was characterized by room-temperature single-crystal X-ray diffraction, SEM-EDS analysis, Raman spectroscopy and magnetic susceptibility measurements. Na₂Cu₃(AsO₃OH)₄·4H₂O represents a new layered structure-type [space group P2₁/c, a = 8.7089(17), b = 9.7452(19), c = 9.3353(19) Å, β = 92.63(3)°, V = 791.4(3) ų, Z = 4]. The layers are normal to [100] and are composed of the isolated Cu₃O₁₂ units interconnected by AsO₃OH coordination tetrahedra. The crystal structure of Na₂Cu₃(AsO₃OH)₄·4H₂O is related to a group of compounds formed by Cu²⁺–(XO₄)^3- layers (X = P⁵⁺, As⁵⁺) linked by M cations (M = alkali, alkaline earth, Pb²⁺, or Ag⁺) and partly by hydrogen bonds, where distinct links and patterns of the Cu₃O₁₂ units and XO₄ tetrahedra were observed. The magnetic susceptibility and magnetization measurements reveal a canted antiferromagnetic ground state which is in excellent agreement with a layered magnetic structure determined by the copper ions of the Cu₃O₁₂ units.

在水热条件下生长了新的四（三砷化氢（V））_三铜二钠二钠Na ₂ Cu ₃（AsO ₃ OH）₄ ·4H ₂ O的单晶。通过室温单晶X射线衍射，SEM-EDS分析，拉曼光谱和磁化率测量来表征该化合物。Na ₂ Cu ₃（AsO ₃ OH）₄ ·4H ₂ O表示新的层状结构类型[空间群P 2 ₁ / c，a = 8.7089（17），b = 9.7452（19），c＝ 9.3353（19），β  ＝ 92.63（3）°，V＝ 791.4（3）³，Z  ＝ 4]。这些层垂直于[100]，由由AsO ₃ OH配位四面体互连的孤立的Cu ₃ O ₁₂单元组成。Na ₂ Cu ₃（AsO ₃ OH）₄ ·4H ₂ O的晶体结构与由Cu ²⁺ –（X O ₄）^3-层（X  = P ⁵⁺，As ⁵⁺）形成的一组化合物有关。由M链接阳离子（M =碱金属，碱土金属，Pb ²⁺或Ag ⁺ ）并且部分地通过氢键形成，其中观察到了Cu ₃ O ₁₂单元和X O ₄四面体的不同链接和样式。磁化率和磁化强度测量显示出倾斜的反铁磁性基态，该态与由Cu ₃ O ₁₂单元的铜离子确定的层状磁性结构非常吻合。