Scorpionate ligands based on 2-Mercaptopyridine : a ligand with a greater propensity to sting?

DYSON, Gavin, ZECH, Alexander, RAWE, Benjamin W., HADDOW, Mairi F., HAMILTON, Alexander and OWEN, Gareth R. (2011). Scorpionate ligands based on 2-Mercaptopyridine : a ligand with a greater propensity to sting? Organometallics, 30 (21), 5844-5850.

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Official URL: http://dx.doi.org/10.1021/om200694r
Link to published version:: 10.1021/om200694r

Abstract

The synthesis and characterization of the first platinum group metal complexes of the recently reported ligand [H2B(mp)2]− (where mp = 2-mercaptopyridyl) are presented herein. Addition of 2 equiv of Na[H2B(mp)2] to [MCl(COD)]2 (where M = Rh, Ir; COD = 1,5-cyclooctadiene) leads to the hydride migration products [Rh{κ3-SSB-BH(mp)2}(η3-C8H13)] and [Ir(H){κ3-SSB-BH(mp)2}(η4-C8H12)], respectively. Structural characterization of the rhodium complex reveals a notably short rhodium–boron distance of 2.054(2) Å. The reactivity observed for the rhodium complex is different from that of all known scorpionate ligands, suggesting a higher propensity for hydride migration within the 2-mercaptopyridine-based ligands. The complex [Ir(Cl){κ3-SSB-BH(mp)2}(η4-C8H12)], which is formed via hydride/halide exchange in chloroform, is also structurally characterized. The new complexes provide rare examples of metallaboratrane complexes where one hydrogen substituent remains at the boron center.

Item Type: Article
Research Institute, Centre or Group: Biomolecular Sciences Research Centre
Identification Number: 10.1021/om200694r
Depositing User: Jamie Young
Date Deposited: 29 May 2015 10:12
Last Modified: 29 May 2015 10:12
URI: http://shura.shu.ac.uk/id/eprint/9926

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