Organotin(IV) trifluoromethanesulfonates chemistry: Isolation and characterization of a new di-n-butyl derivative presenting a Sn3O3 core

Reaction of the dimeric hydroxo di-n-butylstannane trifluoromethanesulfonato complex [n-Bu2Sn(OH)(H2O)(CF3SO3)]2 (1) with a mixture of anthracene (C14H10, Ant) and phenazine (C12H8N2, Phz) in dichloromethane at room temperature yielded the novel di-n-butyltin(IV) trifluoromethanesulfonate salt {[n-Bu2Sn(H2O)]2O·n-Bu2Sn(OH)2}(CF3SO3)2 (2), together with the co-crystallization of phenazinium trifluoromethanesulfonate salts ([C12H9N2][CF3SO3], PhzH) collected in the solid state in two distinct self-assembled architectures, 3 and 4, showing π–π stacking interactions, and involving the intercalation of free molecules of phenazine and anthracene, respectively. Complex 2 is a cationic trinuclear cluster, dihydrated, possessing a planar Sn3O3 core and surrounded by two non-coordinating trifluoromethanesulfonate anions. Each tin atom is coordinated to three oxygen atoms and also bound to two n-butyl ligands, thus exhibiting a trigonal bipyramidal geometry. In addition, oxygen atoms of CF3SO3 anions are involved in hydrogen bonding and long Sn–O distance interactions lead to the formation of a supramolecular two-dimensional network in the solid state.