Wang X, Pan X, Wang X, Li Y, Liu G. Two rare {M
2(MoO
4)
2}
n chain-containing molybdate-based metal-organic complexes with a bis-pyrazole-bis-amide ligand: fluorescent sensing and photocatalysis performance.
RSC Adv 2020;
10:11046-11053. [PMID:
35495322 PMCID:
PMC9050419 DOI:
10.1039/d0ra01420f]
[Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/11/2020] [Indexed: 01/08/2023] Open
Abstract
By introducing a bis-pyrazole-bis-amide ligand, N,N′-bis(1H-pyrazole-4-carboxamide)-1,4-benzene (L), two molybdate-based metal–organic complexes containing {M2(MoO4)2}n (M = Co, Zn), [Co2L2(MoO4)2]·H2O (1), [Zn2L2(MoO4)2]·H2O (2), have been prepared under hydrothermal/solvothermal conditions. X-ray diffraction analyses reveal that both 1 and 2 are isostructural. An interesting structural feature is that a kind of {M2(MoO4)2}n chain could be found in 1 and 2, although different raw materials [Mo7O24]6− and [PMo12O40]3− anions were utilized. Then these chains are further linked by L ligands into a two dimensional (2D) structure. The title complexes represent the first examples containing {MoO4} units and pyrazole-/or amide-derivative ligands. Complexes 1 and 2 exhibit distinct performances due to different metal centers, with 2 acting as a fluorescent sensor for Fe3+, MnO4−, CrO42− and Cr2O72−, but 1 being a better photocatalyst towards degradation of cationic dyes methylene blue (MB) and neutral red (NR).
Two molybdate-based complexes containing {M2(MoO4)2}n (M = Co or Zn) chains were obtained, which demonstrated different properties: excellent photocatalytic degradation performance of cationic dyes for 1 and fluorescence sensing behavior for 2.![]()
Collapse