Fig. 1: Scheme of transformations in SC-1, 2, 3 series. | Nature Communications

Fig. 1: Scheme of transformations in SC-1, 2, 3 series.

From: Photo-controlled vacancies and conductivity within single crystals of silver chalcogenolate cluster-based MOFs

Fig. 1

SC-1 Ag12 cluster node is bridged by two coordination modes of TCNB ligands (para-coordination, μ2-η1 η1 and 1,2,4-coordination, μ3-η1 η1 η1). During ultraviolet irradiation, the structure of SC-1 (2D-3D) is transformed into SC-2 (3D-3D). The occupancy of the coordinated TFA in SC-2 is 0.5, and the occupancy of the para-coordinated TCNB is also reduced to 0.5 because of the statistical pattern of the crystal. This course led to a deepened color of single crystals. Furthermore, after being immersed in the mother liquor and kept in a dark environment for over one week, SC-1 regrows into SC-3, which has a 3D non-interpenetrating structure. Color codes: light blue in 3D framework and orange in 2D-network; TFA, red. All hydrogen atoms are omitted for clarity.

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