Phenol Disulfonic Acid Coordination Polymer Synthesis, Structure And Nature Of The Study

In this thesis, two compounds of2-hydroxy-5-methylbenzene-1,3-disulfonic acidand2-hydroxy-5-bromobenzene-1,3-disulfonic acid have been synthesized and used toconstruct12metal sulfonate complexes through the solution reaction with differentalkaline and silver salts. These12complexes exhibited diverse zero-, one-, two-andthree-dimensional architectures. All the ligands and metal organic complexes were allcharacterized by elemental analyses, IR, PL, TG, powder and single crystal X-raydiffraction. The types of the alkaline metals and coordination modes of the ligandsplayed important roles on the final structures of sulfonate complexes. Usually,high-dimensional structures are easily to be formed with the increasing radius ofalkaline metals and the complicated coordination modes of sulfonate groups. Thecoordination of NH₃molecules led to the0-D structures, on the contrary,3-D structurescould be obtained without the participation of NH₃molecules. It should be noted thatthe introduction of the hydroxyl group at the ortho-position can enrich the coordinationmodes of the-SO₃group. In particular, the deprotonated hydroxyl group in the first caseof [CsRbMg(L2)Cl]_n presented rare μ4mode to bridge three Cs1cations and one Mg1cation. Moreover,2-hydroxy-5-methylbenzene-1,3-disulfonic acid and its metal organiccomplexes exhibited obvious luminescent emissions. By contrast, no emissions for5-bromo-2-hydroxybenzene-1,3-disulfonic acid and its metal complexes are observed.