Issue 10, 2001
From the journal:

New Journal of Chemistry

Reversible solid-state interconversion of rhodizonic acid H2C6O6 into H6C6O8 and the solid-state structure of the rhodizonate dianion C6O62− (aromatic or non-aromatic?)

Dario Braga,*a   Gianna Cojazzi,b   Lucia Mainia  and  Fabrizia Grepioni*c  

* Corresponding authors

a Dipartimento di Chimica G. Ciamician, Uniersità di Bologna, Via F. Selmi 2, Bologna, Italy
E-mail: dbraga@ciam.unibo.it

b Centro CNR per la Fisica delle Macromolecole c/o Dipartimento di Chimica G. Ciamician, Uniersità di Bologna, Via F. Selmi 2, Bologna, Italy

c Dipartimento di Chimica, Uniersità di Sassari, Via Vienna 2, Sassari, Italy
E-mail: grepioni@ssmain.uniss.it

Abstract

Anhydrous rhodizonic acid H2C6O6 is obtained by (fully reversible) thermal dehydration of solid 2,3,5,5,6,6-hexahydroxycyclohex-2-ene-1,4-dione, H6C6O8, commonly known as rhodizonic acid dihydrate. Treatment of H6C6O8 with RbOH yields crystals of Rb2C6O6; the oxocarbon dianion C6O62− is shown to possess a flat, benzene-type structure, with C–C bonds shorter than expected for a (non-aromatic) ketonic-type structure.

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Article information

DOI
https://doi.org/10.1039/B107317F
Article type
Letter
Submitted
03 Jul 2001
Accepted
10 Aug 2001
First published
04 Sep 2001

New J. Chem., 2001,25, 1221-1223

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Reversible solid-state interconversion of rhodizonic acid H2C6O6 into H6C6O8 and the solid-state structure of the rhodizonate dianion C6O62− (aromatic or non-aromatic?)

D. Braga, G. Cojazzi, L. Maini and F. Grepioni, New J. Chem., 2001, 25, 1221 DOI: 10.1039/B107317F

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