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单晶Ｘ－射线衍射结构分析表明［Ｃｕ_４（Ｈ_２Ｏ）_２（ＯＨ）_４（Ｃ_４Ｈ_４Ｏ_４）_２］·３Ｈ_２Ｏ属三斜晶系，空间群为Ｐ１（ｎｏ． ２）．晶胞参数： ａ＝ ９．７３０（２） Ａ， ｈ＝ １０．６０５（２） Ａ， ｃ＝ １２．５８１（３） Ａ，ａ＝ １１１．４０（３）°，β＝１０５．９６（３）°， γ＝ ９６．２０（３）°， Ｖ＝ １１３０．２（４） Ａ°， Ｄｘ＝ １．９４１ ｇ／ｃｍ~３， Ｆ（０００）＝ ６６０，Ｍ_ｒ＝ ６６０．４３，ｕ（Ｍ_Ｑ Ｋ_ａ）＝ ３６．７９ ｃｍ~（－１）， Ｚ＝ ２ Ｔ＝ ２９８ Ｋ，根据３ ９３５个独立衍射点得到 Ｒ（Ｆ_ｏ）＝ ０．０６２和ｗＲ（Ｆ_ｏ~２）＝ ０． １５１（Ｆ_ｏ~２≥ ２σ（Ｆ_ｏ~２）．晶体中的基本结构单元为畸变八面体 ＣｕＯ_６和畸变四方锥体 ＣｕＯ_５紧邻ＣＵＯ_６八面体共享棱边形成平行于［１００］方向的一维多聚链，且紧邻八面体的三个顶点构成ＣｕＯ_５四方锥体的三角面、丁二酸根（Ｃ_４Ｈ_４Ｏ_４）~（２－）离子将多聚链连接成三维网络，而水分子位于隧道之内。ＣｕＯ_６八面体中的 Ｃｕ原子与 １个水分子氧、 ４个羟基氧和 １个羧基氧配位，其中 １个水分子和 １个羟基居轴向位置（底面 ｄ（ＣｕＯ）＝ １．９２７～
Single crystal X-ray diffraction structure analysis shows that [Cu_4 (H_2O) _2 (OH) _4 (C_4H_4O_4) _2] · 3H_2O is a triclinic system with space group P1 (no. 2). Cell parameters: a = 9.730 (2) A, h = 10.605 (2) A, c = 12.581 (3) A, a = 111.40 (3) °, β = 105.96 3) °, γ = 96.20 (3) °, V = 1130.2 (4) A °, Dx = 1.941 g / cm 3, F (000) = 660, M_r = 660.43, u R (F_o) = 0.062 and wR (F_o ~ 2) = 0 based on 3 935 independent diffraction points with M_Q K_a = 36.79 cm -1 and Z = 2 T = 298 K. (F_o ~ 2≥2σ (F_o ~ 2). The basic structural elements in the crystal are the distorted octahedron CuO_6 and the distorted quadrangular pyramid CuO_5, which are adjacent to the common edge of the CUO_6 octahedron to form a one-dimensional poly chain parallel to [100] , And the three vertices immediately adjacent to the octahedron form the triangular face of the CuO_5 tetragonal pyramid. The succinic acid (C_4H_4O_4) ~ (2-) ions link the poly chains into the three-dimensional network, while the water molecules are located in the tunnel. The CuO_6 octahedron Cu atoms in one molecule are coordinated with one water molecule oxygen, four hydroxyl oxygen and one carboxyl oxygen, in which one water molecule and one hydroxyl group are in axial position (the bottom surface d (CuO) = 1.927 ~