[Cyanil]22− dimers possess long, two-electron ten-center (2e−/10c) multicenter bonding†
Abstract
A long, two-electron ten-center (2e−/10c) [8 carbon plus 2 oxygen] bond in diamagnetic dimers of radical-anion tetracyano-1,4-benzoquinoneide (cyanil, [Q]˙−), [Q]22−, is described by B3LYP and CASSCF(2,2)/MCQDPT calculations.