Department of Chemistry, Konkuk University, Seoul 143-701, Republic of Korea.
Inorg Chem. 2010 Jan 4;49(1):229-33. doi: 10.1021/ic9018025.
A new ammonium vanadium tellurate, (NH(4))(2)VO(2)[TeO(4)(OH)(2)] (1), was hydrothermally synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy, and TG analysis. Compound 1 crystallizes in the monoclinic system, space group P2(1)/n: a = 8.9112(18) A, b = 15.151(3) A, c = 15.187(3) A, beta = 97.91(3)(o), V = 2030.9(7) A(3), Z = 8, R1 (I > 2sigma(I)) = 0.0295, wR2 (all data) = 0.0631. The structure of 1 consists of infinite anionic chains, {VO(2)[TeO(4)(OH)(2)]}(2-), of edge-sharing VO(5) square pyramids and TeO(4)(OH)(2) octahedra. Two VO(5) square pyramids are joined together by sharing their edge to form a V(2)O(8) binuclear unit. The V(2)O(8) and TeO(4)(OH)(2) units are alternatively connected to each other by sharing their edges to complete infinite zigzag anionic {VO(2)[TeO(4)(OH)(2)]}(2-) chains. The structure contains an extended network of O-H...O hydrogen bonds between the chains. The network of intermolecular hydrogen bonding results in layers parallel to the ab plane. Ammonium cations are hydrogen-bonded either to the oxygen atoms of the anionic chains or to each other in a complex arrangement.
一种新的铵钒碲酸盐，(NH(4))(2)VO(2)[TeO(4)(OH)(2)]（1），通过水热合成法合成并通过单晶 X 射线衍射、元素分析、红外光谱和热重分析进行了表征。化合物 1 结晶于单斜晶系，空间群 P2(1)/n：a = 8.9112(18)A，b = 15.151(3)A，c = 15.187(3)A，β=97.91(3)(o)，V = 2030.9(7)A(3)，Z = 8，R1（I > 2sigma(I)) = 0.0295，wR2（所有数据）= 0.0631。1 的结构由无限阴离子链组成，{VO(2)[TeO(4)(OH)(2)]}(2-)，由共用边的 VO(5)四方锥和 TeO(4)(OH)(2)八面体组成。两个 VO(5)四方锥通过共享它们的边连接在一起形成一个 V(2)O(8)双核单元。V(2)O(8)和 TeO(4)(OH)(2)单元通过共享它们的边缘交替连接在一起，以完成无限锯齿状阴离子{VO(2)[TeO(4)(OH)(2)]}(2-)链。结构中存在由链间 O-H...O 氢键组成的扩展网络。分子间氢键网络导致平行于 ab 平面的层。铵阳离子通过与阴离子链的氧原子形成氢键，或以复杂的排列方式与彼此形成氢键。
