Tribenzylbis(triphenylarsine oxide-κO)tin(IV) tetraphenylborate

The crystal structure of the title salt, [Sn(C7H7)3(C18H15AsO)2][B(C6H5)4], consists of discrete cations and anions; the tin atom of the cation is five-coordinated in a distorted trans-C3SnO2 trigonal-bipyramidal geometry [summation of C–Sn–C angles 360.0 (3)° and O–Sn–O angle 173.1 (1)°]. The structure contains voids of 113 (19) 3, but no solvent molecule could reasonably be located there.