Isoreticular Tp*–W–Cu–S cluster-based one-dimensional coordination polymers with an uncommon [Tp*WS3Cu2] + [Cu] combination and their third-order nonlinear optical properties
| Autor: | Yinglin Song, Li-Ce Yu, Wen-Hua Zhang, Hong-Juan Xu, Jian-Ping Lang, Ming-Jie Lu, Yanfang Shang, Quan Liu |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Third order nonlinear Pyrazine 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Crystallography chemistry Cluster (physics) General Materials Science 0210 nano-technology Benzene Cluster based |
| Zdroj: | CrystEngComm. 21:3343-3348 |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/c9ce00439d |
| Popis: | We herein report three isoreticular Tp*–W–Cu–S cluster-based one-dimensional coordination polymers, namely, [Tp*WS3Cu2(CN)2Cu](pz)0.5 (2), [Tp*WS3Cu2(CN)2Cu](bipy)0.5·0.5DMF (3), and [Tp*WS3Cu2(CN)2Cu](bpb)0.5·DMF (4), from the reaction of [Et4N][Tp*WS3] (1) with CuCN in the presence of bridging ligands pyrazine (pz), 4,4′-bipyridine (bipy), and 1,4-bis(4-pyridyl)benzene (bpb) under solvothermal conditions. In 2–4, a pair of butterfly-shaped [Tp*WS3Cu2]+ clusters are connected by two [Cu(CN)2]− units to give a macrocyclic unit, which is further strung by pz/bipy/bpb to give linear chains. Besides their rare isoreticular nature, 2–4 are also unique in that they contain a [Tp*WS3Cu2] + [Cu] combination instead of the widely acknowledged nest-shaped [Tp*WS3Cu3]2+ or cuboidal [Tp*WS3Cu3X]+ (X = Cl, Br, I) cluster skeleton. Compounds 2–4 are also characterized by FT-IR, elemental analysis, UV-vis and ESI-MS. The ESI-MS results also indicate that the pz/bipy/bpb coordination is labile in solution under harsh ionization conditions, yielding CN-ligated anionic species which are assumed as the key contributors to the enhanced NLO performance of 2–4 compared to that of the starting material 1. |
| Databáze: | OpenAIRE |
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