ISSN:
0009-2940
Schlagwort(e):
(Cyclooctatetraene)titanium complexes
;
Diphosphacyclobutadiene
;
Cyclodimerization
;
Phosphaalkyne
;
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The synthesis of the (η8-cyclooctatetraene)(η4-1,3- and -1,2-diphosphacyclobutadiene)titanium complexes 3a-c and 4a, b by cyclodimerization of the phosphaalkynes 2a-c [a: R = tBu, b: R = adamantyl (ad), and c: R = (iPr)(Me3Si)N] in the coordination sphere of the (η8-cyclooctatetraene)titanium complex 1 is described. The molecular structures of 3a-c and 4a, b were determined by spectroscopic methods (31P, 1H, and 13C NMR). In the case of 3a and 4a, X-ray analyses were carried out. The increased reactivity of 4a compared to 3a was utilized to separate 3a from 4a. Displacement of the 1,2-diphosphete (isolated as its cyclodimer 5) from 3b was achieved by reaction with hexachlorethane.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cber.19951281219
Permalink
