The present invention relates to ligands based on calixarenes, metal complexes comprising such ligands and their use as homogeneous or heterogeneous catalysts.

Disclosed herein are metal complexes that exhibit multiple radiative decay mechanisms, together with methods for the preparation and use thereof.

Complexes and devices, such as organic light emitting devices and full color displays, including a compound of the formula:

##STR00001## wherein: M is Pd.sup.2+, Ir.sup.+, Rh.sup.+, or Au.sup.3+; each of V.sup.1, V.sup.2, V.sup.3, and V.sup.4 is coordinated to M and is independently N, C, P, B, or Si; each of L.sup.1, L.sup.2, L.sup.3, and L.sup.4 is independently a substituted or unsubstituted aryl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, carbene, or N-heterocyclic carbene; and Z is O, S, NR, CR.sub.2, SiR.sub.2, BR, PR,

##STR00002## where each R is independently substituted or unsubstituted C.sub.1-C.sub.4 alkyl or substituted or unsubstituted aryl.

The present invention relates to ligands based on calixarenes, metal complexes comprising such ligands and their use as homogeneous or heterogeneous catalysts.

The present invention relates to fields of organic chemistry and organometallic chemistry. The present invention discloses a chain multiyne compound, a preparation method thereof and an application in synthesizing a fused-ring metallacyclic compound. A structure of the chain multiyne compound in the present invention is shown as Formula I below. The present invention also provides a preparation method of the chain multiyne compound and an application thereof in a synthesis of a fused-ring metallacyclic compound. The chain multiyne compound disclosed in the present invention has multiple functional groups and the structure of the chain multiyne compound is adjustable. The chain multiyne compound can also be used to synthesize the fused-ring metallacyclic compound efficiently. The preparation method of the chain multiyne compound disclosed in the present invention is simple, which can be used to prepare the chain multiyne compound rapidly and efficiently.

##STR00001##

The present invention relates to metal complexes and to electronic devices, especially organic electroluminescent devices, comprising these metal complexes, especially as emitters.

Iridium, rhodium, and platinum complexes suitable for use as phosphorescent emitters or as delayed fluorescent and phosphorescent emitters having the following structures: ##STR00001## ##STR00002## ##STR00003##

The present invention relates to a process for preparing hydridocarbonyltris(triphenylphosphine)rhodium(I), RhH(CO)(PPh.sub.3).sub.3, also referred to hereinafter as Rh-hydrido. An alcoholic suspension of triphenylphosphine is stirred with an Rh(III) chloride precursor at elevated temperature. The Rh(III) chloride precursor used may be rhodium(III) chloride hydrate RhCl.sub.3*xH.sub.2O or rhodium(III) chloride solution H.sub.3[RhCl.sub.6]*(H.sub.2O).sub.n. After cooling, alcoholic alkali metal hydroxide solution is added, and the mixture is stirred for a few hours. Finally, sparging is effected with CO gas and the Rh-hydrido formed is removed. Rh-hydrido can be prepared by this process on the industrial scale with high yields and at very good quality.

Novel organodiaryl selenoxides and processes for preparation thereof, and use thereof as ligand in complexes.

Novel complexes of diphenyl selenoxides and also use thereof and methods in which the complexes are used.