Mercaptopyridine complexes of dicyclopentadienylmolybdenum and -tungsten: Preparation and electrochemistry. The structure of [Mo(η5-C5H5)2(2-SNC5H4)][PF6]

Carrondo, Maria Arménia; Dias, Alberto R.; Garcia, M. Helena; Mirpuri, Alexandra; Fátima, M.; Piedade, M. Fátima M.; Salema, Margarida S.

doi:10.1016/s0277-5387(89)80008-7

Cited by 9 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reactivity of mercaptopyridine ligands and their coordination toward metals is typically related to their thiol, thione, and zwitterionic forms . Depending on the reaction conditions, they can act as common thiolate species or, when in the thione form, act as neutral ligands . In order to obtain mercaptopyridine ligands in their anionic form and thus favor a covalent (NHC)Au–sulfur bond, we initially explored the deprotonation of 4-mercaptopyridine with potassium hydroxide (2 equiv) followed in a second step by the equimolar addition of the complex (IPr)Au–Cl .…”

Section: Results and Discussionmentioning

confidence: 99%

Synthesis and Reactivity of (NHC)Au^I–Mercaptopyridine Complexes

et al. 2020

View full text Add to dashboard Cite

Reaction of (NHC)Au–X (X = halide) complexes with 2- or 4-mercaptopyridine under basic conditions allows for the preparation of a series of (NHC)AuI–mercaptopyridine complexes 1–4 in high yields. All complexes have been fully characterized by means of 1H and 13C NMR spectroscopy, melting point, and elemental analysis. Single crystals of complexes 1–3 were obtained, and the solid-state structures display a linear Au(I) center with coordination to the NHC ligand and the sulfur atom of the mercaptopyridine moiety. Interestingly, weak γ-anagostic C–H···Au interactions are found in complexes 1–3 regardless of the relative N or S position in the mercaptopyridine. Taking advantage of the free pyridine nitrogen, reaction of complexes 1 and 2 with palladium allyl chloride dimer permits the isolation of heteronuclear Au/Pd complexes 5 and 8 featuring a bridging ambidentate mercaptopyridine ligand. Further reactivity of complexes 1–3 toward B(C6F5)3 produces complexes 6, 7, and 9, which display frustrated Lewis pair reactivity with the activation of a H–F bond.

show abstract

Section: Results and Discussionmentioning

confidence: 99%