A novel polymorph of the unsolvated species [Ru2(benzene)2Cl4] (beta form in the following) was serendipitously isolated as a polycrystalline powder. Its molecular and crystal structure was unraveled by means of state-of-the-art X-ray powder diffraction structure determination methods applied to laboratory data, and was compared to those of both the alpha polymorph and the CHCl3 solvate, throwing light on some discrepant results recently appeared in the literature. The thermal behavior of the alpha and beta polymorphs was investigated by coupling thermogravimetric analyses to variable-temperature X-ray powder diffraction experiments. No temperature-stimulated phase transformation could be detected between the two polymorphs, each preserving its structural features up to decomposition, suggesting that kinetic, more than thermodynamic, factors regulate their isolation.

Unsolvated ruthenium(II) benzene dichloride: The beta polymorph

GALLI, SIMONA;GIACOBBE, CARLOTTA;
2014-01-01

Abstract

A novel polymorph of the unsolvated species [Ru2(benzene)2Cl4] (beta form in the following) was serendipitously isolated as a polycrystalline powder. Its molecular and crystal structure was unraveled by means of state-of-the-art X-ray powder diffraction structure determination methods applied to laboratory data, and was compared to those of both the alpha polymorph and the CHCl3 solvate, throwing light on some discrepant results recently appeared in the literature. The thermal behavior of the alpha and beta polymorphs was investigated by coupling thermogravimetric analyses to variable-temperature X-ray powder diffraction experiments. No temperature-stimulated phase transformation could be detected between the two polymorphs, each preserving its structural features up to decomposition, suggesting that kinetic, more than thermodynamic, factors regulate their isolation.
2014
Galli, Simona; Giacobbe, Carlotta; Tabacaru, Aurel; Xhaferaj, Nertil; Pettinari, Claudio
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2010520
 Attenzione

L'Ateneo sottopone a validazione solo i file PDF allegati

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact