Solid‐State Structure and Behaviour in Solution of Hypervalent Organotin(IV) Derivatives Containing 2‐(Me2NCH2)C6H4 Moieties

Abstract

AbstractHypervalent diorganotin(IV) dihalides of the type RBuSnX2 [R = 2‐(Me2NCH2)C6H4; X = Cl (1), F (2)] and heterocyclic derivatives of the type (RR1SnS)2 [R1 = Bu (3) and 2‐(Me2NCH2)C6H4 (4 and 4·2CHCl3)] have been prepared. Their behaviour in solution was investigated by multinuclear NMR spectroscopy. The molecular structures of these compounds were established by single‐crystal X‐ray diffraction. The strength of the intramolecular Sn→N coordination as a function of the substituent pattern at the tin atom is discussed. Weak intermolecular Sn···Cl interactions result in a “zig‐zag” polymeric chain for dichloride 1, while difluoride 2 is a polymer with a linear –Sn–F–Sn– skeleton. In both compounds, a distorted octahedral (C,N)CSnX3 configuration is observed. The thio derivatives are monomeric and exhibit distorted trigonal bipyramidal (C,N)CSnS2 (3) or distorted octahedral (C,N)2SnS2 (4 and 4·2CHCl3) configurations. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)