ISSN:
0749-1581
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 13C and 31P NMR data of 26 bridgehead phosphorylated adamantanes, adamantyl-P(O)XY, are reported. The 13C chemical shifts of the α-carbons are dependent on the X and/or Y group electronegativities, and can be interpreted by assuming pπdπ electron back-donation from X/Y to P. As expected, 31P chemical shifts cannot be rationalized simply in similar terms. There is an extraordinarily good correlation between α-carbon chemical shifts and the corresponding 1J(CP) values. A tentative interpretation, based on the proportions of s and p character in phosphorus bond orbitals, is presented. Surprisingly large 4J(PP) values were observed for two bis-1,3-dihalophosphophoryladamantanes.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260230112
