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A phosphorus–tin cage molecule with an extremely shielded 31 P nucleus: P 4 [Sn(C 6 H 5 ) 2 ] 3
Author(s) -
Heckmann Gernot,
Binder Herbert,
Bongert Dirk
Publication year - 1998
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(199804)36:4<250::aid-omr265>3.0.co;2-u
Subject(s) - chemistry , tin , cage , phosphorus , molecule , nucleus , crystallography , organic chemistry , neuroscience , combinatorics , mathematics , biology
The structure of the compound P 4 [Sn(C 6 H 5 ) 2 ] 3 was deduced from the 119 Sn and 31 P NMR spectra and it was shown to be a structural analogue of the hetero‐nortricyclene P 4 S 3 . The apical phosphorus atom exhibits an extremely negative 31 P chemical shift of ‐554.65 ppm, and the basal phosphorus atoms also resonate at high field strengths. The 31 P spectrum includes all tin satellite signals of the [mono‐ 117/119 Sn] isotopomers. The spectra are analyzed as A 2 A′MX spin systems (A, M= 31 P; X= 117/119 Sn). The 31 P data for analogous tricyclic cage molecules are presented and discussed. © 1998 John Wiley & Sons, Ltd.