• Chi Zhang

      Articles written in Journal of Chemical Sciences

    • Synthesis, crystal structure, theoretical study and luminescence property of a butterfly-likeW/Cu/S cluster with 1,10-phenanthroline

      Ai-Hua Chen Su-Ci Meng Jin-Fang Zhang Chi Zhang

      More Details Abstract Fulltext PDF

      A new butterfly-like cluster, [WOS3Cu2(phen)2]·3H2O (1) (phen = 1,10-phenanthroline) has been synthesized and characterized by elemental analysis, infrared spectroscopy, ultraviolet-visible spectroscopy, X-ray single crystal analysis and fluorescent analysis. Its crystal structure is monoclinic with space group $C2/c$ and cell parameters: a = 31.928(6) Å, b = 10.653(2) Å, c = 23.097(5) Å, 𝛼 = 90°, 𝛽 = 133.11(3)°, 𝛾 = 90°, V = 5735(2) Å3, 𝑍 = 8. This complex displays a favourable pairwise 𝜋-𝜋 stacking. Density functional theory and time-dependent density functional theory calculations at the B3LYP/LanL2DZf+6-31G* level were performed on complex 1 to rationalize its experimental absorption spectra. Complex 1 exhibits luminescence in EtOH solution at room temperature.

    • Construction of copper-based coordination polymers with 1D chain, 2D plane and wavy networks: Syntheses, structures, thermal behaviors and photoluminescence properties

      Jianghua Li Chi Zhang

      More Details Abstract Fulltext PDF

      Three Cu-based coordination polymers (CPs), including [CuII (𝑁 -𝜂1 -NCS)2 (O-𝜂1 -DMF)2 (𝜇2 -3,3’-bptz)]𝑛 (1), [CuI (1,3-𝜇2-NCS)(𝜇2-3,3’-bptz)]𝑛 (2) and [(CuI (1,3-μ2- NCS))(𝜇2-4,4’-bptz)]𝑛 (3) (DMF = 𝑁, 𝑁-dimethyl formamide, 3,3’-bptz = 3,6-bis(3-pyridyl)tetrazine and 4,4’-bptz = 3,6-bis(4-pyridyl)tetrazine) have been successfully constructed by solution diffusion reactions by using Cu(NO3)2 ·3H2O or CuNCS and KNCS with 3,3’-bptz / 4,4’-bptz ligands, respectively. The resulting crystalline materials have been characterized by the single-crystal X-ray diffraction analyses, elemental analyses, FT-IR spectra, thermogravimetric analyses and powder X-ray diffraction (PXRD). Single crystal X-ray analyses revealed that CP 1 is organized in one-dimensional (1D) chain in which the Cu(II) ions are coordinated by 𝜂1 -NCS anions and 𝜂1-DMF molecules, and linked by 𝜇2-3,3’-bptz bridging ligands. CPs ,2 and 3 are structural isomers. CP 2 exhibits two-dimensional (2D) (4,4)-plane-like network in which Cu(I) ions are linked by 𝜇2-NCS − and 𝜇2-3,3’-bptz ligands. In CP 3, Cu(I) ions are connected by 𝜇2 -NCS − and 𝜇2-4,4’-bptz ligands to form 2D saw-tooth wavy network. In addition, the photoluminescence properties of CPs 1-3 were also investigated in the solid state at room temperature.

  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.