Issue 83, 2003
From the journal:

CrystEngComm

Solventless isomerisation reactions: A crystallographic and thermomicroscopic investigation of some six coordinate RuCl2L2L′2 complexes

Owen P. M. Horwood,a   David G. Billing,a   Demetrius C. Levendis,*a   Florence M. Nareetsilea  and  Neil J. Coville*a  

* Corresponding authors

a Molecular Sciences Institute, School of Chemistry, University of the Witwatresrand, Johannesburg, South Africa
E-mail: ncoville@aurum.chem.wits.ac.za
Fax: 27 11 717 6749

Abstract

The thermal, unidirectional ttt to cct ligand isomerisation of six coordinate ruthenium complexes, RuCl2(RNC)2(PPh3)2 (R = But, 2,6-Xyl, PhCH2 ) and RuCl2(CO)2(PMePh2)2, was investigated in the solid state by powder X-ray diffraction and thermomicroscopy techniques. Temperature studies (under a microscope) on single crystals of ttt-RuCl2(RNC)2(PPh3)2 and ttt-RuCl2(CO)2(PMePh2)2, revealed the reaction took place heterogeneously, via a nuclear formation and growth process commencing at the crystal surface and/or at defects within the crystal. The reaction proceeded without retention of crystallinity. A powder diffraction study was used to follow the isomerisation reaction of ttt-RuCl2(ButNC)2(PPh3)2 and the reaction was found to follow first-order kinetics with Ea = 219 (±26) kJ mol−1.

Graphical abstract: Solventless isomerisation reactions: A crystallographic and thermomicroscopic investigation of some six coordinate RuCl2L2L′2 complexes

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Article information

DOI
https://doi.org/10.1039/B313093B
Article type
Paper
Submitted
17 Oct 2003
Accepted
07 Nov 2003
First published
14 Nov 2003

CrystEngComm, 2003,5, 468-473

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Solventless isomerisation reactions: A crystallographic and thermomicroscopic investigation of some six coordinate RuCl2L2L′2 complexes

O. P. M. Horwood, D. G. Billing, D. C. Levendis, F. M. Nareetsile and N. J. Coville, CrystEngComm, 2003, 5, 468 DOI: 10.1039/B313093B

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