Imperial College London
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Professor James Wilton-Ely

Faculty of Natural Sciences, Department of Chemistry

Professor of Inorganic Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 9718j.wilton-ely Website

 
 
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Location

 

601bMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Robson:2016:10.1021/acs.inorgchem.6b02409,
author = {Robson, JA and Gonzàlez, de Rivera F and Jantan, KA and Wenzel, MN and White, AJ and Rossell, O and Wilton-Ely, JD},
doi = {10.1021/acs.inorgchem.6b02409},
journal = {Inorganic Chemistry},
pages = {12982--12996},
title = {Bifunctional chalcogen linkers for the stepwise generation of multimetallic assemblies and functionalized nanoparticles},
url = {http://dx.doi.org/10.1021/acs.inorgchem.6b02409},
volume = {55},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The disulfide ligand (SC6H4CO2H-4)2 acts as a simple but versatile linker for a range of group 8 transition metals through reaction of the oxygen donors. This leads to a range of homobimetallic ruthenium and osmium alkenyl compounds, [{M(CHCHR)(CO)(PPh3)2(O2CC6H4S-4)}2] (M = Ru, Os; R = C6H4Me-4). Additional metal-based functionality can be added through the use of precursors incorporating rhenium bipyridine units (R = (bpy)ReCl(CO)3). The more robust diphosphine ligands in [{Ru(dppm)2(O2CC6H4S-4)}2](2+) (dppm = diphenylphosphinomethane) allow reduction of the disulfide bond with sodium borohydride to yield the thiol complex [Ru(O2CC6H4SH-4)(dppm)2](+). This complex reacts with [AuCl(PPh3)] to afford the bimetallic compound [Ru(dppm)2(O2CC6H4S-4)Au(PPh3)](+). However, an improved route to the same and related heterobimetallic compounds is provided by the reaction of cis-[RuCl2(dppm)2] with [Au(SC6H4CO2H-4)(L)] (L = PPh3, PCy3, PMe3, IDip) in the presence of base and NH4PF6 (IDip = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene). The heterotrimetallic compound [Au(SC6H4CO2Ru(dppm)2)2](+) is accessible through the reaction of the homoleptic gold(I) dithiolate [Au(SC6H4CO2H-4)2]PPN (PPN = bis(triphenylphosphine)iminium) with cis-[RuCl2(dppm)2]. Without departure from the same methodology, greater complexity can be incorporated into the system to provide the penta- and heptametallic assemblies [(dppf){AuSC6H4CO2Ru(dppm)2}2](2+) and [(dppf){AuSC6H4CO2Os(CHCH-bpyReCl(CO)3)(CO)(PPh3)2}2]. The same stepwise approach provides the dinuclear organometallic complexes [(L)Au(SC6H4CO2-4)M(CHCHC6H4Me-4)(CO)(PPh3)2] (M = Ru, Os; L = PPh3, IDip). Complexes containing three metals from different groups of the periodic table [(L)Au(SC6H4CO2-4)M{CHCH-bpyReCl(CO)3}(CO)(PPh3)2] (M = Ru, Os) can also be prepared, with one ruthenium example (L = PPh3) being structurally characterized. In order to illustrate the versatility of this approach, the synthesis and characterization (IR and
AU  - Robson,JA
AU  - Gonzàlez,de Rivera F
AU  - Jantan,KA
AU  - Wenzel,MN
AU  - White,AJ
AU  - Rossell,O
AU  - Wilton-Ely,JD
DO  - 10.1021/acs.inorgchem.6b02409
EP  - 12996
PY  - 2016///
SN  - 1520-510X
SP  - 12982
TI  - Bifunctional chalcogen linkers for the stepwise generation of multimetallic assemblies and functionalized nanoparticles
T2  - Inorganic Chemistry
UR  - http://dx.doi.org/10.1021/acs.inorgchem.6b02409
UR  - http://www.ncbi.nlm.nih.gov/pubmed/27989205
UR  - http://hdl.handle.net/10044/1/43334
VL  - 55
ER  -
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