Template Effect Of Polyoxometalates During Assembly In D¹⁰ Metal Ion/Triazole System

In this thesis, we choose triazole or its derivative, d10metal ion Ag⁺/Cu2+andobtained five compounds directed by polyoxometalates （POMs） under hydrothermalcondition. The template effect of POMs was discussed and some related properties arepreliminarily investigated.1. Three discrete polynuclear Ag⁺coordination polymers templated byKeggin-type POMs.[{Ag₇（Hbtz）₂（btz）₄}{PM₁₂O₄₀}]·H₂O （M=W,1; Mo,2）（Hbtz=benzotriazolate）{Ag₆（trz）₆}{PMo₁₂O₄₀}₂·6H₂O （3）（trz=1,2,4-triazole）The isostr uc tural compounds1and2contain chair-like heptanuclear silver complex es{Ag₇（Hbtz）₂（btz）₄}3+templated by Keggin-type polyanions. There is a annularhexanuclear silver complex in compound3, as if a hat on the polyainon.2. Two3D compounds templated by Wells-Dawson type POMs.{P₂W₁₈O₆₂}{Ag₉（Htrz）₄（trz）₃（H₂O）}·2H₂O （4）[Cu₈^II（trz）₆（μ3-O）₂（H₂O）₁₂][P₂W₁₈O₆₂]·4H₂O （5）（Htrz=1,2,4-triazole）Compound4contains a triplex chain composed of three single Ag-trz chains. There isa finite helix chain in this chain. The Wells-Dawson type POMs located on two side ofthe triplex chain. Finally, the triplex chains are interlinked into a3D structure, wherethe metal-organic layers and inorganic layers are arranged alternately. Compound5isabeautiful3D MOF with mango-like1D channels constructed from the Cu3-triadtriangular units and templated by double [P₂W₁₈O₆₂]^6-polyoxoanions. This is the firstexample of the metal-organic framework template by double Wells-Dawson POMs.