Effect of the countercation and solvent on the formation of anionic tricobalt carbonyl clusters

C60 and C70 in a Basket? – Investigations of Mono‐ and Multilayers from Azacrown Compounds and Fullerenes

“…6a). This can indicate a well-mixed In addition, AFM measurements on monolayers of calixarenes and hydrophobized cyclodextrins acting as "baskets" are under way [7]. Their mono-and multilayer behavior agree very well with the results described here for the azacrown/fullerene mixtures.…”

Site-Directed Alkylation of [EFe3(CO)9]2- (E = S, Se, Te) Mediated by the Chalcogenide. Synthesis, Spectroscopic Characterization, and Reactivity of [PPN][MeFe3(CO)9E] (E = Se, Te)

“…Because of this difference in reactivity of [ Ib ] 2- toward Me + and H + , the protonation of [ Ib ] 2- was followed at −78 °C by NMR, to determine if initial attack of the cluster might actually occur at the S followed by a migration to the Fe 3 framework. Such a transfer occurs in the case of [HFe 3 (CO) 11 ] - . − For [Ru 3 (CO) 10 (NO)] - protonation occurred at the oxygen atom of the NO ligand at low temperatures, but the proton migrated to the metal framework upon heating the sample to room temperature . However, for the low-temperature protonation of [ Ib ] 2- only signals attributable to residual solvent and the iron hydride were observed.…”

Alkyne-substituted homo- and heterometallic carbonyl clusters of the iron, cobalt and nickel triads

“…190 Cobalt derivatives HCo3(CO)9 and Co3(CO)9COH, obtained from cobalt anions, react with alkynes to give Co3(CO)9CR derivatives. 191,192 An interesting reaction sequence starting from iron carbonyl anions and CH3CN and leading to the re- Bis(carbyne) "apical" clusters of general formula (Cp)3Co3(jU3-CR')(M3-CR") are formed in yields up to 27 % in the synthesis of organic molecules via alkyne cooligomerization in the presence of (Cp)Co(CO)2.311,321…”