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|Title:||Steric control over molecular structure and supramolecular association exerted by tin- and ligand-bound groups in diorganotin carboxylates|
|Source:||Dakternieks, D., Duthie, A., Smyth, D.R., Stapleton, C.P.D., Tiekink, E.R.T. (2003-10-27). Steric control over molecular structure and supramolecular association exerted by tin- and ligand-bound groups in diorganotin carboxylates. Organometallics 22 (22) : 4599-4603. ScholarBank@NUS Repository. https://doi.org/10.1021/om0340140|
|Abstract:||Structural data (X-ray and solution and solid-state 119Sn NMR) show that skew-trapezoidal-bipyramidal diorganotin compounds of 2-quinaldate are invariably monomeric, owing to the steric bulk of the carboxylate ligand. In contrast, most of the analogous compounds of 2-picolinate (2-pic) can increase their coordination number by polymerization or the incorporation of solvent in their coordination sphere in the solid state. The exceptional compound is tBu2Sn(2-pic)2 (3), for which no increase in coordination number is apparent, a result that is correlated with the bulky tert-butyl groups. Thus, judicious choice of tin or ligand substituents can be exploited to dictate coordination number and/or the degree of supramolecular aggregation in the investigated systems.|
|Appears in Collections:||Staff Publications|
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