Syntheses and crystal structures of three diorganoltin(IV) macrocycles

Three novel macrocyclic diorganotin(IV) compounds of the type: {[R-10(SnO)(3)(SnOH)(2)]HnXOm}(2) . L (n = 1, m = 4, R = PhCH2, X = P, L = 0, 1; n = 0, m = 4, R = PhCH2, X = S, L = 4H(2)O,2; n = 0, m = 3, R = n-Bu, X = N, L = O, 3) were synthesized by the reaction of (PhCH2)(2)SnCl2 with Na2HnXO4 (n = 1, X = P; n = 0, X = S) or (n-BU)(2)SnCl2 with NaNO3. All the compounds 1, 2 and 3 are characterized by elemental, IR and X-ray diffraction analyses. X-ray data reveal that a macrocyclic structure with two centrosymmetric ladders of hydrolysis exists in the crystals of the three compounds. The geometry about each tin atom involved is trigonal bipyramidal. (C) 2004 Elsevier B.V. All rights reserved.