Detection of a novel intermediate in the addition of thiols to osmium carbonyl clusters

Abstract

Spectroscopic studies of the reaction of [Os 3 (CO) 11 MeCN)] with para-thiocresol to form [Os 3 (m-H)(CO) 10 (m-SC 6 H 4 Mep)] indicate that the reaction proceeds via a two-step consecutive process involving the intermediate [Os 3 (CO) 11 -(MeC 6 H 4 SH-p)], in which there is an agostic Os-H-S interaction.

Mechanism and Activation Parameters for the κOto μ,κ2O,O′Bonding Mode of the Maleic Acid Ligand on an Osmium Carbonyl Cluster

“…Reports on metal–acetonitrile bond enthalpies appear to be scarce, and these mostly deal with acetonitrile exchange . However, our values are comparable to those reported for the dissociation of acetonitrile in Os 3 (CO) 10 (NCCH 3 ) 2 (Δ H ‡ and Δ S ‡ values of 91 kJ mol –1 and 29 J mol –1 K –1 , or 98 kJ mol –1 and 48 J mol –1 K –1 , respectively). italicR .25em ln false[ h normalk / false( K normalB normalT false) false] = normalΔ italicS ‡ − normalΔ italicH ‡ false( 1 / italicT false) …”

Synthesis, Chemical–Physical Characterization, and Biomedical Applications of Functional Gold Nanoparticles: A Review

“…For instance, dithiocarbamate functionalized diethanolamine (DEA) was employed to alter the AuNP surface, improving its affinity. The DEA is a symmetric compound used to chelate cations [ 242 ]. The synthesized DEA@AuNPs exhibit an adequate selectivity towards lead ions, depending on the coordination of the N and O DEA atoms, with the Pb 2+ cations building a framework.…”

Reactivity of the heteronuclear cluster Cp*IrOs3(μ-H)2(CO)10 with some group 16 substrates

“…Thiols are known to react with homonuclear clusters via oxidative addition across the S-H bond [5]. Interestingly, the reaction involving the cluster Os 3 (CO) 11 (NCCH 3 ) has been reported to proceed via an intermediate with an agostic interaction [6]. In contrast, there appears to have been only one report on the reaction of a heteronuclear carbonyl cluster with thiols [7].…”