A series of new bismuth fluoroalkoxide compounds have been prepared through the treatment of 1,1,1,3,3,3-hexafluoro-2-propanol with BiAr3 (where Ar=Ph, p-Tol). Reactions were conducted without the use of any additional solvent and the reaction products distilled or extracted with non-polar or polar Lewis base solvents. Structural analyses reveal that under variable reaction conditions the interaction of BiAr3 with (CF3)2CHOH can give a mixture of bismuth complexes with varying degrees of substitution, cluster formation and aggregation. Compounds [Bi(OCH(CF3)2)3(pyr)2] () (pyr=pyridine), [Bi(OCH(CF3)2)3(thf)3] () (thf=tetrahydrofuran), [Bi2(OCH(CF3)2)3(dabco)3] () (dabco=1,4-diazabicyclo[2.2.2]octane), [PhBi(OCH(CF3)2)2]n (), [Bi2O(OCH(CF3)2)4(C7H8)]2 () (C7H8=toluene), [Bi9O7(OCH(CF3)2)13] (), [Bi2O(OCH(CF3)2)4(Et2O)]2 (), [Bi2O(OCH(CF3)2)4(thf)]2 () and [Bi2O(OCH(CF3)2)4(tmeda)2] () (tmeda=N,N,N',N'-tetramethylethylenediamine) have been fully characterised including by single crystal X-ray diffraction.
The first heterobimetallic Bi:Sn alkoxide complexes [Bi(2)SnO(OCH(CF(3))(2))(5)(O(t)Bu)(3)(THF)] (1) and [BiSnO(OCH(CF(3))(2))(3)(O(t)Bu)(2)](2) (2) are described. The complexes were obtained through mixing and heating equimolar quantities of the component alkoxides, Bi(OCH(CF(3))(2))(3) and Sn(O(t)Bu)(4), under solvent-free conditions (1) and in THF (2). The solid-state structures were determined by single crystal X-ray diffraction showing ligand redistribution from Bi(III) to Sn(IV) in the two molecular species. Compound 2 behaves as a single-source precursor for the thermolytic formation of bismuth pyrostannate, Bi(2)Sn(2)O(7).
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