Synthesis, Characterization and Crystal Structure of (2, 2'-Bipyridine) (μ-maleato) copper (Ⅱ) Dihydrate

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2002,（4）
• 页码范围: 390-394
• 页数: 5页
• 语种: 英文

摘要

The title polymeric aomplex [Cu(C4H2O4)(C10H8N2)]n@2nH2O was prepared and its crystal structure was determined by X-ray diffraction methods. The crystal belongs to space group P2 1/ c with cell dimensions of α= 1.0104(1), b =1.9952(2), c=0.7357(2) nm, β=98.38(2)° and Z =4. The complex forms zig-zag chains along crystallographic axis c via Cu-O (carboxyl) bond in the apical direction. Each repeated unit consists of a square pyramidal Cu(H) centre with one maleate dianion and one 2,2'-bipyridine forming a basal plane. Adjacent chains link to each other by H-bonding between carboxyl groups and crystalline water. The distance of 0.3482 nm between parallel bipyridine rings shows a π-π stacking interaction. The title complex was also characterized by IR, UV and ESR spectra.