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Cooperative effects of metal cations and coordination modes on luminescent s-block metal–organic complexes constructed from V-shaped 4,4′-sulfonyldiphenol

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Abstract

The self-assembly of 4,4′-sulfonyldiphenol (H2sdp) with s-block metal salts in an aqueous or mixed H2O/alcohol solution gives rise to the formation of 13 new complexes, namely, [Li(Hsdp)(H2O)]n (1), [Na(Hsdp)(H2O)]n (2), [K(Hsdp)(H2sdp)(H2O)]n (3), [Cs(Hsdp)(solvent)(H2O)]n [solvent = EtOH (4) and i-PrOH (5)], [Mg(H2O)6]·2(Hsdp)·(H2sdp)·4H2O (6), [Ca(Hsdp)2(H2O)4] (7), [AE2(Hsdp)4(H2sdp)4] [AE = Sr (8) and Ba (9)], [Mg(sdp)(H2O)]n (10), [Ca(sdp)]n (11), [Sr(sdp)(H2O)2]n (12), and [Ba2(sdp)2(MeOH)2(H2O)]n (13), which have been characterized by elemental analysis, IR spectroscopy, TGA, PL, and powder and single-crystal X-ray diffraction. The smaller Li(I) and Na(I) cations in complexes 1 and 2 tend to induce the formation of chain and layer structures, whereas the larger K(I) and Cs(I) cations in complexes 3, 4 and 5 tend to induce the formation of a 3-D hybrid network. Complexes 6–9 and 10–13 also exhibit an increase in dimensionality in the sequence from Mg(II) to Ba(II) cations. From a reaction at room temperature, mononuclear (6 and 7) and dinuclear (8 and 9) motifs are observed. In contrast, from a hydrothermal reaction, layer (10 and 12) and 3-D hybrid (11 and 13) networks are formed with less coordination of water molecules and more intricate coordination modes of sdp2− dianions. The structural evolution is mainly determined by the effective coordination numbers (ECNs) and radii of the metal cations, as well as the coordination modes of the ligands. As a result of hydrogen bonding, these 13 complexes possess various types of network, i.e., porous networks with rhombic or hexagonal channels, organic–inorganic hybrid networks, and ABAB packing networks. The solid-state luminescence properties demonstrate that all these complexes exhibit violet and blue emissions in the range of 375–429 nm at room temperature.

Graphical abstract: Cooperative effects of metal cations and coordination modes on luminescent s-block metal–organic complexes constructed from V-shaped 4,4′-sulfonyldiphenol

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Publication details

The article was received on 18 Sep 2018, accepted on 26 Oct 2018 and first published on 30 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01591K
Citation: CrystEngComm, 2018, Advance Article
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    Cooperative effects of metal cations and coordination modes on luminescent s-block metal–organic complexes constructed from V-shaped 4,4′-sulfonyldiphenol

    C. Li, Z. Deng, L. Huo and S. Gao, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE01591K

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