Study of the first POM columns pillared MOFs derivative

A new POM column pillared MOFs derivative has been hydrothermally synthesized by using the pytz ligand (3-pytz = 5-(3-Pyridyl)-1H-tetrazole) and structurally characterized: H{[Ag3(3-pytz)2(H2O)]2·[AgSiW12O40]}·2H2O (1). Compound 1 is constructed by 2D Ag-pytz MOFs and infinite [AgSiW12O40]n3n− inorganic chains , in which SiW12 acts as hexad-dentate ligand coordinating with eight silver centers and POM-Ag chains as columns pillar the 2D MOFs. To our best knowledge, the title compound represents the first example about POM columns pillared MOFs and the highest coordination number of Keggin POMs to date.