Tetrakis(pyrazol-1-ylmethyl)methane and its hypodentate binuclear complex with silver(I) nitrate

The preparation and X-ray crystal structure of tetrakis(pyrazol-1-ylmethyl)methane are described. This new ligand reacts with silver(I) nitrate to give a M2L2 complex, in which the ligand bridges two trigonal silver atoms with bidentate and monodentate coordination domains. As such the ligand is hypodentate with one non-coordinated pyrazole group.