Metallogel of bis(tetrazole)-appended pyridine derivative with CoBr2 as a chemoprobe for volatile gases containing chloride atom
Metallogel of bis(tetrazole)-appended pyridine derivative with CoBr2 as a chemoprobe for volatile gases containing chloride atom
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DOI：
10.1080/10610278.2016.1142088
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发表时间：
2016-02
影响因子：
3.3
通讯作者：
Ji Ha Lee;Y. Baek;K. Kim;Heekyoung Choi;J. Jung
中科院分区：
文献类型：
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作者：
Ji Ha Lee;Y. Baek;K. Kim;Heekyoung Choi;J. Jung
摘要双(四唑)配体1通过与Co2+离子混合，有效地形成了金属络合物。有趣的是，含有CoBr2的金属氧化物1呈现橙黄色，具有八面体结构。用CoBr2制得的金属凝胶的流变性能比用CoCl2制得的金属凝胶大1.5倍左右。加入HCl后，以CoBr2制备的金属凝胶1中含有氯原子的SOCl2、(CoCl2)2和CoCl2由橙黄色变为蓝绿色。这些结果表明，金属凝胶的八面体结构转变为四面体结构。另一方面，在过量的其他阴离子，即HF、HBr、HI、HNO3和H_2SO_4的存在下，没有观察到明显的颜色变化。这些结果表明，含CoBr2的金属络合物可作为含氯原子气体的化学探针。
Abstract A bis(tetrazole)-appended ligand 1 formed the metallogel efficiently by mixing with Co2+ ion. Interestingly, the metallogel 1 with CoBr2 showed the orange yellow colour, which has octahedral structure. The rheological properties of metallogel obtained with CoBr2 were ca. 1.5-fold larger than that for the metallogel obtained with CoCl2. Upon addition of HCl, SOCl2, (COCl)2 and COCl2 containing chloride atoms in the metallogel 1 prepared with CoBr2 changed from orange yellow to blue-green colour. These results indicate that the octahedral structure of metallogel was converted into the tetrahedral structure. On the other hand, no significant colour changes were observed in the presence of an excess of other anions, namely HF, HBr, HI, HNO3 and H2SO4. These findings indicate that the metallogel 1 with CoBr2 is useful as a chemoprobe for gases containing chloride atom.