A catalyzed hydroformylation process of an alkenyl-functional organosilicon compound with carbon monoxide and hydrogen produces an aldehyde-functional organosilicon compound.

Composition for use as catalyst in hydrosilylations, comprising at least one platinum compound selected from the group consisting of Pt[(Me.sub.2SiCH═CH.sub.2).sub.2O].sub.2 and Pt.sub.2[(Me.sub.2SiCH═CH.sub.2).sub.2O].sub.3 and at least one rhodium compound selected from the group consisting of Rh(acac)(CO).sub.2, Rh.sub.2(CO).sub.4Cl.sub.2, [Rh(cod)Cl].sub.2, Rh(acac)(cod), RhH(CO)(PPh.sub.3).sub.3, Rh(CO)(PPh.sub.3)(acac), RhCl(CO)(PPh.sub.3).sub.2, and Rh-2-ethylhexanoate at a molar ratio of Pt/Rh in the range of 0.1 to 100.

Through the use of a rhodamine appended chelate, a versatile strategy has been demonstrated to generate mitochondria-targeting photosensitizers via the incorporation of variety of luminescent transition metal systems. The generation of triplet excited state of rhodamine moiety endows the complexes with mitochondria-targeting photosensitizing ability to form singlet oxygen (.sup.1O.sub.2) for use as photodynamic therapy (PDT) agent. The combination of rhodamine organic dye and luminescent transition metal centers in such hybrid systems exhibits the synergistic merits, including low dark cytotoxicity, selective tumor cell uptake, high molar absorptivity for low-energy excitation in the visible region, and high photostability.

An organic light-emitting device includes: a first electrode; a second electrode; an organic layer between the first electrode and the second electrode and including an emission layer; and at least one organometallic compound represented by Formula 1. The organic light-emitting device including the organometallic compound may have a low driving voltage, a high luminance, a high efficiency, and a long lifespan: ##STR00001##

Diphosphites having an open, 3-methylated outer unit and use thereof in hydroformylation.

In one aspect, phosphine compounds comprising three adamantyl moieties (PAd.sub.3) and associated synthetic routes are described herein. Each adamantyl moiety may be the same or different. For example, each adamantyl moiety (Ad) attached to the phosphorus atom can be independently selected from the group consisting of adamantane, diamantane, triamantane and derivatives thereof. Transition metal complexes comprising PAd.sub.3 ligands are also provided for catalytic synthesis including catalytic cross-coupling reactions.

The present invention includes novel heteroleptic/homoleptic iridium complexes containing two tridentate ligands, where at least one of the tridentate ligands comprises of pyridinium-derived N-heterocyclic carbene. The compounds of the present invention may be useful for organic electroluminescent devices.

Diphosphites having an open and a closed 2,4-methylated outer unit and use thereof in hydroformylation.

Mixture of bisphosphites having an open and a closed outer unit and the use thereof as a catalyst mixture in hydroformylation.

The present invention refers to the use of an epoxide in order to reduce the formation of heavy ends in a continuous hydroformylation process, where an olefin or olefin mixture is reacted with carbon monoxide and hydrogen in the presence of a rhodium complex catalyst, comprising at least one organobisphosphite ligand, in order to produce an aldehyde. Said epoxide is added to the reaction mixture in an amount of 0.01-1.5 wt %, reducing the formation of heavy ends by 10-80%.