Monitoring the Activation of Open Metal Sites in [Fe_xM_3-x(μ₃-O)] Cluster-Based Metal-Organic Frameworks by Single-Crystal X-ray Diffraction.

ABSTRACT: While trinuclear [Fe_xM_3-x(μ₃-O)] cluster-based metal-organic frameworks (MOFs) have found wide applications in gas storage and catalysis, it is still challenging to identify the structure of open metal sites obtained through proper activations and understand their influence on the adsorption and catalytic properties. Herein, we use in situ variable-temperature single-crystal X-ray diffraction to monitor the structural evolution of [Fe_xM_3-x(μ₃-O)]-based MOFs (PCN-250, M = Ni²⁺, Co²⁺, Zn²⁺, Mg²⁺) upon thermal activation and provide the snapshots of metal sites at different temperatures. The exposure of open Fe³⁺ sites was observed along with the

SUBMITTER: Chen W 

PROVIDER: S-EPMC10848254 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature