Polysulfonylamine: XXXVIII. Darstellung und Festkörperstruktur von Bis(trimethylzinn)-dimesylamid-hydroxid [Me 3Sn{μ-(MeSO 2) 2N}Me 3Sn(μ-OH)] n

Abstract

The title compound 1 is obtained from equimolar amounts of Me 3SnN(SO 2Me) 2 ( 2) and Me 3SnOH in ethanol or by partial hydrolysis of 2 in CH 2Cl 2 solution and in presence of a nitrogen base, e.g. pyridine. 1 crystallizes in the triclinic space group P 1 with (at −95°C) a = 825.4(3), b = 856.2(3), c = 1341.6(5) pm, α = 81.97(3), β = 74.72(3), λ = 79.75(3)°, U = 0.8958 nm 3, Z = 2. The structure consists of infinite chains, in which Me 3Sn groups are bridged by alternating O(H) and (α-O, ω-O)-bonded dimesylamide groups. Antiparallel chains are interconnected by OH⋯N hydrogen bonds to form a “ladder” structure. There are two independent tin atoms. The SnO(H) distances are 211.8(2) and 212.6(2) pm, the SnO(S) distances 268.2(2) and 253.3(2) pm, the O(H)SnO(S) angles 174.5(1) and 173.8(1)°, and the SnO(H)Sn angle is 136.9(1)°. In the trigonal-bipyramidal (C 3O 2) environment of the tin atoms, the CSNC angles are slightly smaller than 120°, the O(H)SnC angles significantly greater than 90°, and the O(S)Sn C angles correspondingly smaller than 90°. Thus, the chain structure might reasonably be viewed as consisting of [(Me 3Sn) 2OH] + ions alternating with [(MeSO 2) 2N] − ions.