Syntheses and supramolecular structures of two 5-nitrosalicylate titanocene complexes
Syntheses and supramolecular structures of two 5-nitrosalicylate titanocene complexes
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两种5-硝基水杨酸二茂钛配合物的合成和超分子结构
DOI：
10.1002/aoc.1022
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发表时间：
2006-02-01
影响因子：
3.9
通讯作者：
Wu, DH
中科院分区：
文献类型：
--
作者：
Gao, ZW;Zhang, CY;Wu, DH
通过 Cp2TiCl2 与 5-硝基水杨酸反应合成了两种 4 配位二茂钛配合物 [(eta(5)-C5H5)(2)Ti(O,O')(5-NO2-OCC6H3)] (1) 和 [(eta(5)- C5H5)(2)Ti(2-OH-5-NO2-O2CC6H3)(2)] (II)。水性介质。 I和II的单晶X射线分析显示Ti-IV的单核形式，钛原子的几何形状是扭曲的四面体，而配合物I中Ti-IV的配位环境与配合物II中的不同。晶体学表征表明，每个配合物都表现出通过弱相互作用构建的三维框架，即H键、pi-pi堆积和C-H中心点中心点中心点pi相互作用，但两种配合物在形成三维网络结构时存在很大差异。结果表明，条件的剧烈变化对5-硝基水杨酸二茂钛的分子结构影响很大，从而显着影响弱相互作用和特定的骨架结构。版权所有 (c) 2005 John Wiley & Sons, Ltd.
Two 4-coordinated titanocene complexes, [(eta(5)-C5H5)(2)Ti(O,O')(5-NO2-OCC6H3)] (1) and [(eta(5)- C5H5)(2)Ti(2-OH-5-NO2-O2CC6H3)(2)] (II), have been synthesized by reaction of Cp2TiCl2 and 5-nitrosalicylic acid in aqueous media. Single-crystal X-ray analyses of I and II display the mononuclear forms of Ti-IV, and geometries at titanium atoms are distorted tetrahedrons, while the coordination environment at Ti-IV in complex I is different from that in complex II. Crystallographic characterization revealed that each of the complexes exhibits a three-dimensional framework constructed through weak interactions, which are H-bonding, pi-pi stacking and C-H center dot center dot center dot pi interactions, but they differ greatly when forming the three-dimensional network structure in both complexes. The results show that the dramatic change of conditions has great effect on the molecular structure of 5-nitrosalicylate titanocene, thereby significantly influencing the weak interactions and the specific framework structure. Copyright (c) 2005 John Wiley & Sons, Ltd.