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标题化合物晶体属单斜晶系,空间群P2_1/c,a=0.963 0(1),b=1.884 0(3),c=1.827 8(2)nm,β=90.57(1)°,V=3.315 9 nm~3,Z=4,D_6=1.773g/cm~3。结构是用直接法解出,最后R因子为0.045。结果表明,该单斜晶相含有单核三(吡啶-2,6-二羧酸根)合蒽络阴离子[Tb(dipic)_3]~(3-),Tb~(3+)离子由6个羧酸根O原子和3个N原子配位形成三帽三方柱配位多面体。Na~+离子均由羧基O或水分子配位形成Na-O八面体。这些畸变的八面体除共享顶点外,还以共棱或共面的方式联结。整个晶体结构由Na-O键和氢键将Na~+离子和络阴离子联结起来。
The title compound crystallizes in the monoclinic space group P2_1 / c, a = 0.963 0 (1), b = 1.884 0 (3), c = 1.827 8 (2) nm, β = 90.57 3.315 9 nm ~ 3, Z = 4, D_6 = 1.773 g / cm ~ 3. The structure is solved using the direct method, and the final R factor is 0.045. The results show that the monoclinic phase contains Tb (dipic) _3] ~ (3 -) mononuclear tris (pyridine-2,6-dicarboxylate) The carboxylate O atoms coordinate with three N atoms to form a three-capped three-pillar coordination polyhedron. Na ~ + ions are coordinated by carboxyl O or water molecules to form Na-O octahedron. These distorted octahedra, in addition to sharing the vertices, are also co-angular or coplanar bonded. The entire crystal structure by Na-O bond and hydrogen bond Na ~ + ions and complex anion association.