Atmospheric CO2 capture by a triphenyltin–1,2-bis(4-pyridyl)ethane system with formation of a rare trinuclear carbonato-centered core

Abstract

Direct atmospheric CO2 capture occurred during the reactions of triphenyltin chloride (Ph3SnCl) with 1,2-bis(4-pyridyl)ethane (bpa) in methanol and aqueous ammonia. Depending on the reaction temperature, 4°C and room temperature, two different compounds were obtained: a discrete, trinuclear complex, [(Ph3SnCl)2(μ3-CO3)(Ph3Sn)(Hbpa)]·H2O (1), and a coordination polymer 1∞[(Ph3SnCl)(Ph3Sn)2(μ3-CO3)(bpa)]·H2O (2), respectively. X-Ray crystal structure analysis reveals that both compounds contain a rare trinuclear carbonato-centered core C(OSnPh3)3. The supramolecular architecture of compound 1, assembled by hydrogen-bond interactions, is described.