Synthesis, structure and nonlinear optical properties of three dimensional compounds

Abstract

The combination of metal ions with H₃tbba has resulted in the formation of two three dimensional coordination compounds {[Zn(H₂tbba)₂(H₂O)] · 2(OC₃H₆)} _n (1) and {[Mn(H₂tbba)₂(H₂O)] · 2(OC₃H₆)} _n (2) (H₂tbba = 2-thiobarbituric acid anion). Compounds 1 and 2 are isostructural with metal ions bridged by four hydroxyl oxygens from four different H₂tbba ligands to form a 3D network. H₂tbba exhibits bidentate coordination with both hydroxyl oxygens participating in coordination, a new coordination mode. Nonlinear absorption and refraction of 1 and 2 in DMF are studied by using Z-scan measurement technique at 532 nm. 1 and 2 possess nonlinear optical absorption and self-focusing.

Keywords:

• Coordination polymer
• Zinc
• Manganese
• Nonlinear optics
• Z-scan

Acknowledgements

We thank the National Natural Science Foundation of China (Nos. 20571039 and 20171020), the Ministry of Education of China (No. 20050284031) and the Natural Science Foundation of Jiangsu province (No. BK2006124).