Issue 2, 2005
From the journal:

New Journal of Chemistry

Synthesis of ferrocenyldiimine metal carbonyl complexes and an investigation of the Mo adduct encapsulated in cyclodextrin†

Željko Petrovski,a   Susana S. Braga,b   Sandra S. Rodrigues,c   Cláudia C. L. Pereira,a   Isabel S. Gonçalves,*b   Martyn Pillinger,b   Cristina Freired  and  Carlos C. Romão*ac  

* Corresponding authors

a Instituto de Tecnologia Química e Biológica da Universidade Nova de Lisboa, Quinta do Marquês, EAN, Apt. 127, Oeiras, Portugal

b Department of Chemistry, CICECO, University of Aveiro, Campus de Santiago, Aveiro, Portugal
E-mail: igoncalves@dq.ua.pt
Fax: +351-234-370084
Tel: +351-234-378190

c Alfama, Research and Development of Pharmaceutical Drugs, Ltd, IBET, Apartado 12, Oeiras, Portugal

d REQUIMTE/Departamento de Química, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Porto, Portugal

Abstract

Cr and Mo tetracarbonyl complexes bearing the diimine ligand N,N′-bis(ferrocenylmethylene)ethylenediamine (FcNN) have been prepared from the ligand and M(CO)6. Two isomeric forms of (FcNN)Mo(CO)4, corresponding to the cis,cis and cis,trans geometries with respect to the C[double bond, length as m-dash]N bonds of the free ligand, were shown to exist in a 1∶12.5 ratio by 1H NMR (NOE experiments). By contrast, only the trans,trans isomer is observed for the Cr complex (FcNN)Cr(CO)4. The compounds (FcNN)M(CO)4 show ferrocene-based irreversible oxidation processes that lead to the deposition of a film at the electrode surface. (FcNN)Mo(CO)4 was immobilised in permethylated β-CD (TRIMEB) by addition of the guest to a solution of TRIMEB in dichloromethane. Removal of the solvent led to the isolation of an inclusion compound with a 2∶1 host∶guest stoichiometry, as evidenced by powder X-ray diffraction, thermogravimetric analysis, FTIR and 13C CP MAS NMR spectroscopy. The electrochemical properties of (FcNN)Mo(CO)4 upon encapsulation are discussed.

Graphical abstract: Synthesis of ferrocenyldiimine metal carbonyl complexes and an investigation of the Mo adduct encapsulated in cyclodextrin

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Article information

DOI
https://doi.org/10.1039/B409961C
Article type
Paper
Submitted
30 Jun 2004
Accepted
23 Sep 2004
First published
21 Dec 2004

New J. Chem., 2005,29, 347-354

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Synthesis of ferrocenyldiimine metal carbonyl complexes and an investigation of the Mo adduct encapsulated in cyclodextrin

Ž. Petrovski, S. S. Braga, S. S. Rodrigues, C. C. L. Pereira, I. S. Gonçalves, M. Pillinger, C. Freire and C. C. Romão, New J. Chem., 2005, 29, 347 DOI: 10.1039/B409961C

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