Activation of Small Molecules by Cluster Complexes

The results of theoretical, experimental investigations on activation of small molecules on their coordination to cluster complexes of heavy transition metals with weak- and strong-field ligands are presented. Homogeneous catalytic redox reactions of the CO, N₂, H₂O molecules and the N₃ ^- molecular anion in the presence of cluster complexes of low-valent molybdenum and rhenium are studies. The reaction mechanism is established. Three modifications of the homogeneous cluster catalysis of redox reactions of small molecules are described.     

Evaluating the Complexity of Index Sets for Families of General Recursive Functions in the Arithmetic Hierarchy

The complexity of index sets of families of general recursive functions is evaluated in the Kleene–Mostowski arithmetic hierarchy.