ISSN:
1042-7163
Keywords:
Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The hypervalent phosphorus compound 3,7-di-t-butyl-5-aza-2,8-dioxa-1-phosphabicyclo[3.3.0]octa-2,4,6-triene(ADPO), forms a monosubstituted adduct, ADPO·Fe(CO)4, by direct reaction of 10-P-3 ADPO with Fe2(CO)9 or Fe(CO)5, as well as by reaction of 1,1-dichloro-3,7-di-t-butyl-5-aza-2,8-dioxa-1-phosphabicyclo[3.3.0]octa-3, 6-diene(ADPO·Cl2) with Na2[Fe(CO)4]. The X-ray crystal structure of ADPO·Fe(CO)4 shows that ADPO is coordinated to the iron through the phosphorus. The phosphorus of the adduct has a tetrahedral 8-P-4 geometry in contrast to the planar T-shaped geometry of uncomplexed 10-P-3 ADPO. Ultraviolet photolysis of ADPO·Fe(CO)4 yields the disubstituted species (ADPO)2·e(CO)3 wherein ADPO has dimerized via P-O bond cleavage to form a bidentate (ADPO)2 ligand containing a 10-membered ring that bridges axial and equatorial positions at the trigonal bipyramidal iron center.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hc.520020307
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