✦ LIBER ✦
A phosphorus–tin cage molecule with an extremely shielded 31P nucleus: P4[Sn(C6H5)2]3
✍ Scribed by Gernot Heckmann; Herbert Binder; Dirk Bongert
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 199 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
The structure of the compound was deduced from the 119Sn and 31P NMR spectra
3 and it was shown to be a structural analogue of the hetero-nortricyclene
The apical phosphorus atom P 4 S 3 . exhibits an extremely negative 31P chemical shift of [554.65 ppm, and the basal phosphorus atoms also resonate at high Ðeld strengths. The 31P spectrum includes all tin satellite signals of the [mono-117@119Sn] isotopomers. The spectra are analyzed as spin systems (A, M \ 31P ; X \ 117@119Sn). The 31P data for analogous tricyclic A 2 A@MX cage molecules are presented and discussed.