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Science 20 February 1987:
Vol. 235. no. 4791, pp. 871 - 873
DOI: 10.1126/science.235.4791.871
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Articles

Dianion Stabilization by (M(C5(CH3)5)2)+: Theoretical Evidence for a Localized Ring in (DDQ)2-

JOEL S. MILLER 1 and DAVID A. DIXON 1

1 Central Research and Development Department, Experimental Station, E. I. du Pont de Nemours and Company, Wilmington, DE 19898.

Organic dianions have been stabilized by (M(C5(CH3)5)2)+, where M is iron or cobalt. This has allowed the structural and spectroscopic characterization of these dianions. The structure of (M(C5(CH3)5)2)2+ (DDQ)2-, where DDQ is 2,3-dichloro-5,6-dicyanobenzoquinone, has been determined by x-ray crystallography. The structure of (DDQ)2-is consistent with ab initio molecular orbital calculations that suggest a localizd as opposed to a delocalized (aromatic) ring structure.

Submitted on September 29, 1986
Accepted on December 30, 1986


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
A Room-Temperature Molecular/Organic-Based Magnet.
J. M. MANRIQUEZ, G. T. YEE, R. S. MCLEAN, A. J. EPSTEIN, and J. S. MILLER (1991)
Science 252, 1415-1417
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