Abstract
The reaction of three positional isomer ligands of bis(1,2,4-triazol-1-ylmethyl)benzene and Co(NCS)2 gives three coordination polymers [Co(obtz)2(NCS)2] n (1), [Co(mbtz)2(NCS)2] n (2), and {[Co(bbtz)2(NCS)2] · 2DMF} n (3). Polymers 1 and 2 are comprised of similar 1-D double chains. In 1, each chain forms π–π stacking interactions with four adjacent chains (two above and two below) to extend to a 3-D supramolecular network. Polymer 3 is a neutral 2-D (4,4) network. The dangling NCS− inserts into the window of adjacent layers in a mutual relationship and result in a 2-D → 3-D polythreaded network in 3. The thermal stability and the diffuse reflectance UV-Vis spectroscopy of 1, 2, and 3 were measured.
Acknowledgments
This work was supported by the Natural Science Foundation of China (No. 21 171 126), the Priority Academic Program Development of Jiangsu Higher Education Institutions, and the Funds of Key Laboratory of Organic Synthesis of Jiangsu Province.