A Pentahydrated Diorganotin Cation. Cocrystallization of [{n-Bu₂Sn(H₂O)₅}][CF₃SO₃]₂ and [{n-Bu₂Sn(BPDO-II)₂(H₂O)₂}][CF₃SO₃]₂

Abstract

A 1:2:1 reaction of [n-Bu2SnO]n, trifluoromethanesulfonic acid, and 4,4′-bipyridine N,N-dioxide (BPDO-II) afforded a cocrystal (1·H2O) of the unprecedented pentahydrated diorganotin cation [{n-Bu2Sn(H2O)5}][CF3SO3]2 (1A) and its coordination product [{n-Bu2Sn(BPDO-II)2(H2O)2}][CF3SO3]2 (1B). A variation in crystallization conditions led to the isolation of a coordination polymer, [{n-Bu2Sn(μ-BPDO-II)(H2O)2}{CF3SO3}2]n (2).