Hydrothermal synthesis of a novel μ-dihydroxo-bis(2,6-pyridinedicarboxylatoaquachromium(III)) complex and investigation of its catalytic activity

被引：16

作者：

Ay, Burak ^{[1
]}

Yildiz, Emel ^{[1
]}

Jones, Stephanie ^{[2
]}

Zubieta, Jon ^{[2
]}

机构：

[1] Cukurova Univ, Arts & Sci Fac, Dept Chem, TR-01330 Adana, Turkey

[2] Syracuse Univ, Dept Chem, Syracuse, NY 13244 USA

来源：

INORGANICA CHIMICA ACTA | 2012年 / 387卷

基金：

美国国家科学基金会;

关键词：

Cr(III) complex; 2,6-Pydc; Hydrothermal synthesis; Heterogeneous catalysis; Crystal structure; Thymoquinone; ORGANIC FRAMEWORK STRUCTURES; CRYSTAL-STRUCTURES; COORDINATION POLYMER; PYRIDINE-3,4-DICARBOXYLIC ACID; PYRIDINE-2,6-DICARBOXYLIC ACID; THYMOQUINONE; OXIDATION; NI(II); MONOTERPENES; COMPOUND;

D O I：

10.1016/j.ica.2011.12.043

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new chromium(III) compound [Cr(H2O)(OH)(C7H3NO4)](2), mu-dihydroxo-bis(2,6-pyridinedicarboxylato aquachromium(III)), has been successfully synthesized by the hydrothermal reaction of 2,6-pyridinedicarboxylic acid (H(2)pydc) and CrCl3 center dot 6H(2)O in the alkali medium. This metal complex was characterized by elemental analysis, IR spectroscopy, thermal analysis and single-crystal X-ray diffraction. The X-ray analysis showed that the structure is molecular and consists of units of two Cr(H2O)(OH)(C7H3NO4) groups linked through two OH groups. In the complex, each Cr centre is in a distorted octahedral environment, defined by two hydroxyl bridges, an aqua ligand and a tridentate pyridinedicarboxylate anion. The thermal stability and catalytic properties of the complex were also investigated. The complex affected the oxidation of thymol to thymoquinone with 100% selectivity and a conversion rate of 20.25%. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：15 / 19

页数：5

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