Liu G, Wu S, Hou L, Lu YK, Yang Q, Wang YY. A Lead Carboxylate-Azolate Metal-Organic Framework Based on Hexanuclear Clusters: Luminescence and Accelerating the Thermal Decomposition of Ammonium Perchlorate.
Chempluschem 2019;
84:289-294. [PMID:
31950754 DOI:
10.1002/cplu.201800641]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/21/2019] [Indexed: 12/19/2022]
Abstract
A lead carboxylate-azolate framework, [Pb3 (μ4 -O)(L)2 (H2 O)] ⋅ 2H2 O (1), has been constructed from the reaction of 2-methyl-4-(1H-tetrazol-5-yl) benzoic acid (H2 L) and Pb(NO3 )2 under solvothermal conditions. Compound 1 contains an unprecedented hexanuclear cluster [Pb6 (μ4 -O)2 (COO)4 (CN4 )2 ], which as an 8-connected node is connected by 3-connected L linkers to give rise to a three-dimensional framework with an uncommon (3,8)-connected tfz-d; UO3 topology. Framework 1 possesses strong solid-state yellow luminescence (563 nm), which stems from ligand-to-metal charge transfer (LMCT), however, the removal of water molecules in 1 lead to the significant luminescent decrease of the sample. Importantly, in the presence of 1, the thermal decomposition of ammonium perchlorate is significantly accelerated.
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