Synthesis and Characterization of Copper(I) Halide Complexes Prepared with Bipodal Diacylthioureas

• Published in: European journal of inorganic chemistry 2020-07, Vol.2020 (26), p.2521-2529
• Main Authors: Peng, Lan‐Xin, Wang, Dan, Zhang, De‐Xiang, Zhang, Zhi‐Jiao, Zhou, Qi, Li, Hai‐Pu, Yang, Ying
• Format: Article
• Language: English
• Subjects: Anions; Bipodal; Chemical analysis; Complexation; Coordination compounds; Coordination polymer; Copper; Cu(I) complex; Diacylthiourea; Halides; Infrared spectroscopy; Inorganic chemistry; Ligands; NMR spectroscopy; Self‐assembly; Sulfur
• ISSN: 1434-1948; 1099-0682
• DOI: 10.1002/ejic.202000312

Bipodal diacylthioureas [MesC(O)NHC(S)NH]2R (R = C6H4‐1,2 (L1, 1), C6H4‐1,4 (L2, 2)) were synthesized, and their complexation reactions with equimolar Cu(I) halides CuX (X = Cl, Br, ) were investigated. The obtained ligands L1–2 and the resultant Cu(I) complexes (3–8) were characterized by FT‐IR, 1H NMR, 13C NMR spectroscopy, elemental analysis and single‐crystal X‐ray diffraction. The complexation of L1 with CuX gave three different 1D polymers: the infinite single chain (L1CuCl)n (3), edge‐shared double‐ring chain {[(µ‐L1)CuBr]2}n (4), and vertex‐shared double‐ring chain {[L1Cu(µ‐I)]2}n (5). Similarly, but more pronounced, the treatment of L2 with CuX resulted in the formation of 1D edge‐shared double‐ring chain {[(µ‐L2)CuCl]2}n (6), 0D discrete dinuclear metallamacrocyclic ring (L2CuBr)2 (7), and 3D network polymer [L2Cu(µ‐I)]n (8), respectively. The structural diversity may be related to the suitable spacer, flexible C=S directionality and binding roles of halide anions and sulfur donors. Among Cu(I) complexes (3–8) as prepared, both chloride (in 3 and 6) and bromide anions (in 4 and 7) acted as terminal ligands, while the iodide anions (in 5 and 8) served as bridging ligand. In contrast, only in edge‐shared double‐ring chains (4 and 6) it was found that the sulfur donors (one of two in each Ln) played as the bridging ligand. Complexation of bipodal diacylthioureas with Cu(I) halides CuX (X = Cl, Br, I) afforded the coordination products with great structural diversity, including 0D discrete dinuclear metallamacrocyclic ring, 1D polymers of infinite single chain, edge‐shared double‐ring chain, and vertex‐shared double‐ring chain, and 3D network polymer.