- A convenient route to distannanes, oligostannanes, and polystannanes
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The quantitative conversion of the tertiary stannane (ν;-Bu) 3SnH (2) into (ν-Bu)6Sn2 (4) was achieved by heating the neat hydride material under low pressure or under closed inert atmosphere conditions. A 31% conversion of Ph3SnH (3)to Ph6Sn 2 (5) was also observed under low pressure; however, under closed inert atmosphere conditions afforded Ph4Sn (6) as the major product. A mixed distannane, (ν-Bu)3SnSnPh3 (7), can also be prepared in good yield utilizing an equal molar ratio of 2 and 3 and the same reaction conditions used to prepare 4. This solvent-free, catalyst-free route to distannanes was extended to a secondary stannane, (ν-Bu)2SnH 2 (8), which yielded evidence (NMR) for hydride terminated distannane H(ν-Bu)2SnSn(ν-Bu)2H(9), the polystannane [(ν-Bu)2Sn] ' (10), and various cyclic stannanes [(ν- Bu)2Sn]ν=5,6=5,6 (11, 12). Further evidence for 10 was afforded by gel permeation chromatography (GPC) where a broad, moderate molecular weight, but highly dispersed polymer, was obtained (Mw = 1.8 × 104 Da, polydispersity index (PDI) = 6.9) and a characteristic UV-vis absorbance (1max)of ν370 nm observed.
- Khan, Aman,Gossage, Robert A.,Foucher, Daniel A.
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p. 1046 - 1052
(2011/02/16)
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- A NEW PREPARATION OF HEXAALKYLDITINS. 119Sn NMR AND CHROMATOGRAPHIC DATA ON LINEAR POLYTINS
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The reaction of triorganotin oxides and formic acid provides a good route to ditin derivatives.Several new linear polytin compounds have been isolated, and the vicinal and long range 119Sn-119Sn coupling constants determined.A linear relationship has been demonstrated between the logarithm of the HPLC retention time and the number of tin atoms in the compounds.
- Jousseaume, Bernard,Chanson, Evelyne,Bevilacqua, Marcel,Saux, Annie,Pereyre, Michel,et al.
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p. C41 - C45
(2007/10/02)
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