Synthesis, Crystal Structure, and Thermal Stability Properties of a Novel 1D [Co (II) Coordination Polymer Co(L)(4,4′-Bipy)(H₂O)]_n

Abstract

A 1D chain coordination polymer, namely, [Co(L)(4,4′-Bipy)(H₂O)]_n (1), where Na₂L = 2-[(2-Hydroxy-benzylidene)-amino]-benzenesulfonic acid sodium salt and 4,4′-Bipy = 4,4'-bipyridine, has been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and single-crystal X-ray diffraction. It crystallizes in monoclinic, space group P2(1)/n. The sulfonate-derived Schiff base serves as a common N, O, O′-tridentate ligand and 4,4′-Bipy in the complex (1) act as μ₂-bridging ligand linking adjacent two metal ions into 1D zigzag infinite chain. The 1D chain is further constructed into 3D networks via intermolecular hydrogen bonds between the phenolato oxygen atom and coordinated water.

Keywords::

• Co(II) complex
• crystal structure
• sulfonate-derived Schiff Base
• synthesis

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Funding

This work was supported by Guangxi Natural Science Foundation of China (Grant Nos. 0991293 and 2010GXNSFD013017), Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), Ministry of Education of China (No. CMEMR2011–13), the Scientific research and technological development project of GuiLin (No. 20110330), and Key Subjects of Universities in Guangxi Province Applied Chemistry (2007<20>).