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Three new hybrid mercury halides compounds with 1,4-diazabicyclo[2.2.2]octan (DABCO) ligand, namely, Hg 2 (μ 2 -I) 2 I 3 (H-DABCO) ( 1 ), {[Hg 5 (μ 2 -I) 6 I 4 (μ 2 -DABCO) 2 ][Hg 2 I 4 (μ 2 -DABCO)]} n ( 2 ) and {[Hg 2 (μ 2 -Br) 2 Br 2 (μ 2 -DABCO)]·2(HgBr 2 )} n ( 3 ), have been synthesized. Compound 1 crystallizes in a P 2 1 chiral space group and is a discrete dinuclear mercury(II) compound with inorganic Hg 2 (μ 2 -I) 2 I 3 unit. Compound 2 consists of 1D neutral [Hg 5 (μ 2 -I) 6 I 4 (μ 2 -DABCO) 2 ] n broad polymeric array containing uncommon inorganic decanuclear [Hg 10 (μ 2 -I) 12 I 8 ] n clusters, and neutral guest Hg 2 (μ 2 -DABCO)I 4 molecules. Compound 3 is composed of a neutral [Hg 2 (μ 2 -Br) 2 Br 2 (μ 2 -DABCO)] n polymeric chain and guest inorganic HgBr 2 molecules. In all cases, the halide ions participate in the framework connectivity as bridging ligands. A variety of coordination geometries displayed by the metal sites such as linear, trigonal and tetrahedral are observed in these compounds. Of the three compounds, only compound 3 displays photoluminescence with a emission maximum at 528 nm upon excitation at 468 nm. In addition, these compounds are characterized by IR, elemental analysis, and thermogravimetric analysis. |
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