## Abstract The ^13^C NMR shift parameters and couplings to tin are reported for nine phenyltin halogenides and seven phenyltin chalcogenides, as well as the __T__~1~ results for Ph~2~SnTe. A pronounced linear dependence of all coupling constants on the __para__βcarbon shift is discussed.
IR and NMR studies of parasubstituted phenyltin compounds
β Scribed by George Eng; Clyde R. Dillard
- Book ID
- 104137663
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 417 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0020-1693
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β¦ Synopsis
Tetrakis-parasubstituted phenyltin compounds as well as the I :I addition complexes formed between tris-parasubstituted phenyltin chlorides and the Lewis bases, acetone, diethyl ether, dimethyl sulfoxide and N,N-dimethylacetamide, have been investigated by infrared and nmr spectroscopy. The results provide further evidence that in aryltin compounds dn-pn bonding exists between the empty d orbitals of the tin atom and the pi electrons of the phenyl ring, The results also indicate that substitution on the tin atom by a chlorine atom tends to enhance dn-pn bonding while substitution on the aromatic ring at the para position has little or no effect on the tin-phenyl bond.
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