Pamoic acid in forming metallo-organic framework: Synthesis, characterization and first crystal structure of a dimeric Ti(IV) complex

Baghel GS; Rao CP

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Pamoic acid in forming metallo-organic framework: Synthesis, characterization and first crystal structure of a dimeric Ti(IV) complex

机译：形成金属有机骨架的酸：二聚Ti（IV）配合物的合成，表征和第一晶体结构

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摘要

Two novel dinuclear Ti(IV) complexes of the ligand, 4,4'-methylene-bis (3-hydroxy-2-naphthalene carboxylic acid) (H4L) or pamoic acid having compositions, [(HL)(2)Ti-2(mu-O)(DMF)(2)]center dot(DMF)(6) (1) and [(L)(2)Ti-2(mu-O)(DMF)(2)]center dot(DMF)(4)(4,4'-Bipy-2H)(H2O),(2) have been synthesized and characterized by analytical and spectral methods and the structure has been established by single crystal XRD. Unlike the reported polymeric structures observed in case of H4L or pamoic acid, the anti-conformation of H4L changes to syn - orientation to avoid poly-metallic complex formation, as noticed in 1 and 2. The dimeric Ti(IV) units stack in the lattice to form helical columns and the space between the adjacent columns is being filled by the solvent molecules in 1 and solvent plus the protonated 4,4'-bipy in the lattice of 2 and thus the neighbor columns are connected through weak interactions.

机译：配体的两种新颖的双核Ti（IV）配合物4,4'-亚甲基双（3-羟基-2-萘甲酸）（H4L）或具有组成[[HL]（2）Ti-2 （mu-O）（DMF）（2）]中心点（DMF）（6）（1）和[（L）（2）Ti-2（mu-O）（DMF）（2）]中心点（DMF ）（4）（4,4'-Bipy-2H）（H2O），（2）已通过分析和光谱方法合成并表征，并通过单晶XRD建立了结构。与在H4L或pamoic酸的情况下观察到的报道的聚合物结构不同，H4L的反构象变为顺方向，从而避免了多金属络合物的形成，如图1和2所示。二聚Ti（IV）单元堆叠在晶格形成螺旋柱，相邻柱之间的空间被1中的溶剂分子和溶剂加上2晶格中的质子化的4,4'-bipy填充，因此相邻柱通过弱相互作用连接。

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《Polyhedron: The International Journal for Inorganic and Organometallic Chemistry》 |2009年第16期|共8页
作者
Baghel GS; Rao CP;
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正文语种 eng
中图分类无机化学;
关键词
4; 4 '-Methylene-bis (3-hydroxy-2-naphthalene carboxylic acid); Dimeric Ti(IV) complex; Octahedral Ti(IV) center; Helical structure;

机译：4;4'-亚甲基双（3-羟基-2-萘甲酸）;二聚Ti（IV）配合物;八面体Ti（IV）中心;螺旋结构;

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1. Pamoic acid in forming metallo-organic framework: Synthesis, characterization and first crystal structure of a dimeric Ti(IV) complex [J] . Baghel GS, Rao CP Polyhedron: The International Journal for Inorganic and Organometallic Chemistry . 2009,第16期

机译：形成金属有机骨架的酸：二聚Ti（IV）配合物的合成，表征和第一晶体结构
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Pamoic acid in forming metallo-organic framework: Synthesis, characterization and first crystal structure of a dimeric Ti(IV) complex

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