The oxidation and reduction reactions of [Co6C(CO)15](2-) have been studied in detail, leading to the isolation of several new Co-carbide carbonyl clusters. Thus, [Co6C(CO)15](2-) reacts in tetrahydrofuran (THF) with oxidants such as HBF4·Et2O and [Cp2Fe][PF6], resulting first in the formation of the previously reported [Co6C(CO)14](-); then, in CH2Cl2, the new dicarbide [Co11C2(CO)23](2-) is formed. The latter may be further oxidized, yielding the isostructural monoanion [Co11C2(CO)23](-), whereas its reduction with (cyclopentadienyl)2Co affords the unstable trianion [Co11C2(CO)23](3-), which decomposes during workup. Oxidation of [Co6C(CO)15](2-) in CH3CN with [C7H7][BF4] affords the same major products, and besides, the new monoacetylide [Co10(C2)(CO)21](2-) was obtained as side-product. Conversely, the reduction of [Co6C(CO)15](2-) in THF with increasing amounts of Na/naphthalene results in the following species: [Co6C(CO)13](2-), [Co11(C2)(CO)22](3-), [Co7C(CO)15](3-), [Co8C(CO)17](4-), [Co6C(CO)12](3-), and [Co(CO)4](-). The new [Co11C2(CO)23](-), [Co11C2(CO)23](2-), [Co10(C2)(CO)21](2-), [Co8C(CO)17](4-), [Co6C(CO)12](3-), and [Co7C(CO)15](3-) clusters were structurally characterized. Moreover, the paramagnetic species [Co11C2(CO)23](2-) and [Co6C(CO)12](3-) were investigated by means of electron paramagnetic resonance spectroscopy. Finally, electrochemical studies were performed on [Co11C2(CO)23](n-) (n = 1-3).

No abstract

Ordered mesoporous carbons with optimized surface functionalities were synthetized by a soft template method using the organic‐organic self‐assembling method between eco‐friendly polymerizable molecules (pholoroglucinol and glyoxal) and a triblock‐copolymer (Pluronic F‐127). Varying the curing and pyrolysis treatments, lead to materials with high surface area and long‐range order. Moreover, new functionalities and modification of carbon surface were obtained using simple post‐treatment methods, without significantly changing the texture of materials. In particular, surface oxidation using HNO3 in mild conditions introduces a high number of oxygen functionalities over the ordered carbon, improving the overall activity of this material as noble‐free catalyst in the aerobic oxidation of benzyl alcohol. The creation of carbons with mesoporous and optimized surface functionalization can be considered a promising way to develop metal‐free catalysts and/or efficient catalyst supports for heterogeneous hydrogenation and oxidation reactions.