A review of the problem of distinguishing true homogeneous catalysis from soluble or other metal-particle heterogeneous catalysis under reducing conditions

Iron-catalysed transformation of molecular dinitrogen into silylamine under ambient conditions

“…Our speculation will be logically supported by some experimental findings with the aid of quantum chemical calculations. First, we have investigated the catalytic reaction in the presence of a large excess amount of Hg as mercury-poison test 18 . However, no influence of Hg was observed at all.…”

Tuning of photocatalytic activity by creating a tridentate coordination sphere for palladium

“…This is a first hint that photodecomposition and in situ generation of colloidal Pd might be an important part of the catalytic mechanism with Ru(bmptpphz)PdCl, however further methods of analysis have to be applied to confirm this assumption. 52,53 Conclusions Herein, we reported on a novel structural modification of a tpphz based ligand. In this context, the first example of a regioselective asymmetric disubstitution in the 2,17-position of tpphz selectively influencing one coordination sphere of the potential bridging ligand was shown.…”

The water-soluble cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+: Improved synthesis, aerobic oxidation, electrochemical properties and ligand exchange studies

“…In the case of the putative homogeneous [(C 8 H 17 ) 3 Me]- [RhCl 4 ] ion pair catalyst [5], Finke and co-workers [6] were able to demonstrate that rhodium(0) nanoclusters are the true catalysts (''soluble analogs of heterogeneous catalysts''). Benzene and other arene hydrogenation catalysts have been reviewed recently by Finke [7] and by Dyson [8], and the question of the true nature of the catalytic species in arene hydrogenation catalysis beginning with soluble metal complexes has been critically addressed by Finke et al [9].…”

“…question for benzene hydrogenation beginning with [1][BF 4 ] [9,10], it proved necessary to develop an improved synthesis for the quantities of 1 that were required, since it is difficult to obtain pure [1][BF 4 ] by crystallization according to the original procedure [1]. In addition, we decided to study the redox properties and the ligand exchange processes of this cluster in detail.…”