Issue 50, 2002
From the journal:

CrystEngComm

Two concomitant polymorphs and two isomorphous forms with different chemical compositions, which transform into the same substance upon thermal treatment†

Dario Braga,*a   Gianna Cojazzi,b   Dario Emiliani,a   Lucia Maini,a   Marco Polito,a   Roberto Gobettoc  and  Fabrizia Grepioni*d  

* Corresponding authors

a Dipartimento di Chimica G. Ciamician, Università di Bologna, Via 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, Università di Bologna, Via Selmi 2, Bologna, Italy

c Dipartimento di Chimica I.F.M., Università di Torino, Via P. Giuria 7, Torino, Italy

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

Abstract

The organometallic cationic acid [CoIII(η5-C5H4COOH)2]+ (AC) is crystallised from hydrochloric acid solutions in two polymorphic modifications of the salt [CoIII(η5-C5H4COOH)2]Cl·H2O, ACCl·H2Ocube and ACCl·H2Osword. On the other hand, ACCl·H2Osword is isomorphous with the triply-hydrated zwitterion [CoIII(η5-C5H4COOH)(η5-C5H4COO)], ZW·3H2O. ACCl·H2Osword, ACCl·H2Ocube and ZW·3H2O are all converted into the anhydrous form [CoIII(η5-C5H4COOH)(η5-C5H4COO)], ZW, upon thermal treatment. The structural relationship between the ionic and neutral systems and their interconversion have been investigated with a combination of solid-state techniques (single crystal and powder X-ray diffraction, thermogravimetric analysis, mass spectrometry and solid state 13C CP/MAS NMR).

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/B201547A
Article type
Paper
Submitted
12 fev 2002
Accepted
17 abr 2002
First published
16 jul 2002

CrystEngComm, 2002,4, 277-281

Permissions

Request permissions

Two concomitant polymorphs and two isomorphous forms with different chemical compositions, which transform into the same substance upon thermal treatment

D. Braga, G. Cojazzi, D. Emiliani, L. Maini, M. Polito, R. Gobetto and F. Grepioni, CrystEngComm, 2002, 4, 277 DOI: 10.1039/B201547A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements