| Metal organic salts(MOSs)are a kind of substance with special structure formed by hydrogen bond between metal complex and protonated ligand.Because of its simple synthesis,high yield and structural controllability,MOSs have attracted extensive attention.And it has a wide range of applications in nanomaterials,optical material,biological medicine,organic catalysis,ionic liquids and molecular adsorption.Morpholine ligands have two coordination sites of N and O as well as good flexibility.When N is coordinated with metal,the corresponding O can also participate in the coordination,so this kind of ligands have strong coordination ability and are often used to replace the highly toxic phosphorous ligands.Morpholine complexes and their metal organic salts have been widely reported in anticancer,bacteriostatic,catalytic,targeted drugs,luminescent materials and magnetic materials and etc.However their adsorption has been seldom studied.In this paper,two triangular ligands L1 and L2 were synthesized from morpholine.Metal organic salts 1-7 were prepared by solution method,ligands L1,L2 and MCl2(M=Cu,Co,Zn,Cd),and by controlling the ratio of solvents:[H3L1]3+·[Cu Cl4]2-·Cl-(1)?[H3L1]3+·[Cu Cl4]2-·Cl-·[Me OH]·[H2O](1a)[H3L1]3+·[Co Cl4]2-·Cl-·[H2O](2)?[H3L1]3+·[Co Cl4]2-·Cl-·[H2O]·[1,4-Dioxane](2a)?[H3L1]3+·[Zn Cl4]2-·Cl-·[H2O](3)?[H3L1]3+·[Cd Cl4]2-·Cl-·[H2O](4)?[H3L2]3+·[Cu Cl4]2-·Cl-·[Me OH](5)?[H3L2]3+·[Cd Cl4]2-·Cl-·[Me OH](6)?[H3L2]3+·[Zn Cl4]2-·Cl-·[Me OH](7).The above ligands and organometallic salts were characterized and analyzed by IR,P-XRD,SC-XRD,~1H NMR and TGA.The adsorption of the above organic metal salts was investigated,and the results were as follows:single crystals 1 and 2 could be converted into single crystals 1a and2a by solvent adsorption.At the same time,single crystals 1a and 2a could also be converted into single crystals 1 and 2 by removing solvent molecules.The above conversion process was detected by X-ray powder diffraction.Single crystals 3?4?6?7 can adsorb methanol,acetonitrile,ethanol and anionic dyes.Their adsorption results were detected by P-XRD,TGA,~1H NMR and UV-VIS. |
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