ISSN:
0009-2940
Keywords:
Nitrogenases
;
Tripodal ligans
;
Hydrazido ligands
;
Side-on - end-on coordination
;
Coordination modes
;
Cobalt
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
While η2-coordination of N2H4 and N2H3- to tripod-cobalt entities has been reported, stabilization of N2H2 in this system has not yet been achieved. It is observed that [tripodCo(η2-HNNMe2)]+ (3) is transformed into [tripodCo(η1-NNMe2)]+ (4) by reaction with LiN(TMS)2 as a base. The deprotonation of 3 is accompanied by a redox reaction, and the overall reaction corresponds to the transformation of 3 to 4 with the loss of an electron and a proton. The observed coupling of deprotonation and oxidation is just the reverse of the processes assumed to occur during nitrogen fixation. The results are established by the usual analytical and spectroscopic techniques as well as by X-ray analyses.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19971300408
