Crystal structure of bis{(hydroxy-methoxy-di(2-pyridyl)- methane-k3N,O,N')bis(μ2-iodo)diiododimercury(II)}, [Hg2I4(C12H12N2O2)]2

Abstract

Source of materialFort he preparation of thet itle compound, as olution of di(2-pyridyl)ketone (0.15 g, 0.80 mmol) in methanol (5 ml) was added to asolution of HgI 2 (0.36 g, 0.80 mmol) in methanol (15 ml) and the resulting colorless solution was stirred for 15 min at 40°C. This solution was left to evaporate slowly at room temperature. Afterone week,yellow needle-shaped crystals of the title compoundwereisolated(yield0.32g,71.1%). Experimental detailsIt is notablet hatt he slightly high residual densities,2 .09a nd -1.69e /Å 3 ,a re near to heavyIand Hg atoms( highest peak at 0.77 Åfrom I1, and deepest hole at 0.93 Åfrom Hg1). The structure was checked by PLATON [1]and no solvent accessible void has been found. DiscussionThe polydentate ligand di(2-pyridyl)ketone (dpk), its hydrolyzed derivatives (py) 2 C(OR)(OH) and( py) 2 C(OH) 2 or its anions