The first oxalate-based 2D coordination polymer containing the biomimetic ligand 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7-one

Reaction of 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one (HmtpO) with manganese(II) nitrate in presence of oxalic acid yielded the first complex containing this hypoxanthine analog and oxalate, namely [K2Mn2(μ-mtpO)4(μ6-ox)(μ-H2O)6]n, where mtpO is the anionic form of HmtpO derivative. The X-ray structure of this bimetallic polymer is built up of metal-oxalate cationic chains which are further linked by mtpO ligand in an unusual fashion to give a neutral 2D framework.