链状聚[[二水合四价铽(III)]-四(μ(2)-吡啶-4-羧酸根-κO:O')-[二水合四价铽(III)]-双(μ(2)-吡啶-4-羧酸根-κO:O')]
catena-Poly[[diaquaterbium(III)]-tetrakis(μ(2)-pyridine-4-carboxylato-κO:O')-[diaquaterbium(III)]-bis(μ(2)-pyridine-4-carboxylato-κO:O')].
作者信息
Zhang Xiangfei, Zhai Bin
机构信息
Department of Chemistry, Shangqiu Normal University, Shangqiu 476000 Henan, People's Republic of China.
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2011 Oct 1;67(Pt 10):m1439-40. doi: 10.1107/S1600536811038487. Epub 2011 Sep 30.
The title complex, Tb(2)(C(6)H(4)NO(2))(6)(H(2)O)(4), was isolated under hydro-thermal conditions using the ligand pyridine-4-carb-oxy-lic acid (HL) and Tb(2)O(3). The deprotonated L(2-) ligands adopt bridging coordination modes. The central Tb(III) atom is bridged by L(2-) ligands, forming a polymeric chain parallel to the a axis. Supra-molecular O-H⋯N inter-actions link the chains, building up a layer parallel to (010). O-H⋯O hydrogen bonds also occur. Two of the pyridine rings are disordered by rotation around the central C-N direction with occupancy ratios of 0.53 (1):0.47 (1).
标题配合物[Tb₂(C₆H₄NO₂)₆(H₂O)₄]ₙ是在水热条件下，使用配体吡啶-4-羧酸（HL）和Tb₂O₃分离得到的。去质子化的L²⁻配体采用桥联配位模式。中心Tb(III)原子由L²⁻配体桥联，形成平行于a轴的聚合物链。超分子O-H⋯N相互作用连接这些链，构建出平行于(010)的层。同时也存在O-H⋯O氢键。其中两个吡啶环围绕中心C-N方向旋转而无序，占有率为0.53(1):0.47(1)。
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