Bismuth(III) Complexes Based on Bis(triazol) Ligands: Effect of Fluorine Substitution on the Structure and Catalysis for the Polymerization of Glycolide. Issue 11 (6th June 2016)

• Record Type: Journal Article
• Authors: Gao, Jian; Yuan, Yu; Cui, Ai‐Jun; Tian, Feng; Chen, Sheng‐Chun; He, Ming‐Yang; Chen, Qun
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 642:Issue 11/12(2016)
• Page Start: 698
• Page End: 703
• Publication Date: 2016-06-06
• Subjects: Bis(triazole) ligand -- Bismuth -- Crystal structure -- Ring‐opening polymerization -- Glycolide; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201500814
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: Two bismuth(III) complexes {[Bi(btx)0.5 Cl4 ](Hbtx)} n (1 ) and [Bi2 (Fbtx)Cl10 ](H2 Fbtx)2 (MeOH) (2 ) based on the nonfluorinated ligand 1, 4‐bis[(1, 2, 4‐triazole‐1‐yl)methyl] benzene (btx) or the perfluorinated analogue 1, 4‐bis[(1, 2, 4‐triazole‐1‐yl)methyl]‐2, 3, 5, 6‐benzene (Fbtx) were synthesized and characterized. Single‐crystal X‐ray diffraction revealed that1 is a coordination polymer consisting of an anionic one‐dimensional chain, whereas2 shows a discrete ionic‐paired structure. Furthermore, 1 was found to be more active than2 toward the bulk solvent‐free polymerization of glycolide, giving poly(glycolic acid) (PGA) with high molecular weights and moderate molecular weight distributions. The results indicated that the substituent effect plays an important role in controlling the structure and catalytic activity of such complexes. Abstract :