Abstract
The syntheses of tricarbonyl η 6-[(3-thiophenyl)arene]chromium 1a, 1b and η 5-[(3-thiophenyl)cyclohexadienyl]manganese complexes 2 are reported using a Stille cross-coupling methodology. A two-step strategy involving a Stille reaction– exo-hydride abstraction sequence allowed selective access to cationic tricarbonyl η 6-[(3-thiophenyl)arene]manganese complex 3. 1H-NMR data of these 3-thiophenylchromium and manganese complexes are presented as well as a comparison with the corresponding 2-thiophenyl-substituted derivatives described in the literature. The crystal structure determinations of 3-thiophenyl and 2-thiophenyl-η 6-(arene)Cr(CO) 3 complexes showing the conformations of the Cr(CO) 3 tripods are also reported.
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