Abstract: The invention relates to metal complexes used to bind proteins and enzymes.

Abstract: A catalyzed process whereby a cyclic olefin is oxidized to produce an epoxide is disclosed. The inventive process which uses air, or molecular oxygen as the sole oxidizing agent, and which is catalyzed by a specifically structured metallosalen complex is characterized in its high selectivity and high turnover efficiency.

Abstract: Substrates are oxidized by means of two-oxidative addition reactions of a dimeric, dinuclear transition metal complex oxidant containing four binucleating diisocyanide bridge ligands. The complex is reoxidized by means of a secondary oxidant which is a stronger oxidizing agent than the complex which in turn is oxidized by molecular oxygen. Though the direct oxidation of the complex by oxygen involves a large energy barrier and is relatively slow, the kinetics of the two stage oxidation of the complex by the secondary oxidant and of the oxidant by oxygen permit regeneration of the oxidant at reasonable rate. Substrates, such as the olefins, ethylene or propylene, have been continuously oxidized by bubbling oxygen and the olefin through a solution of a dimeric, dirhodium complex containing four 1,3-diisocyanopropane bridge ligands and a secondary oxidant such as a cerium salt.

Abstract: Novel polymer supported catalysts are prepared by irradiation of low valent transition metal compounds such as iron carbonyl in the presence of solid polymers containing ligands such as phosphinated polystyrene. Hydrogenation of olefins at ambient conditions has been demonstrated.

Abstract: A complex ion containing rhodium, Rh.sub.2 (1,3-diisocyanopropane).sub.4.sup.2+ is called "rhodium bridge." Because of the nature of its molecular structure, it is deep blue in water solution. Irradiation of the blue complex between 500 and 600 nm leads to direct reduction of the protons in water to hydrogen gas. In this reaction rhodium bridge is converted to a yellow form, in which each of the two rhodiums has lost one electron. The H.sub.2 -producing visible photoreaction of rhodium bridge can be utilized in a solar-driven water splitting cycle.

Abstract: Novel polymer supported catalysts are prepared by photo-irradiation of low valent transition metal compounds such as Co.sub.2 (CO).sub.8, Rh.sub.4 (CO).sub.12 or Ru.sub.3 (CO).sub.12 in the presence of solid polymers containing amine ligands such as polyvinyl pyridine. Hydroformylation of olefins to aldehydes at ambient conditions has been demonstrated.