The invention relates to powdery, highly reactive alkali and alkaline earth hydride compounds, and to mixtures with elements of the third main group of the periodic table of elements (PTE) and to the preparation thereof by reacting alkali or alkaline earth metals in the presence of finely dispersed metals or compounds of the third main group of the PTE, wherein the latter have one or more hydride ligands or said hydride ligands are converted in situ, under the prevailing reaction conditions, i.e., in the presence of hydrogen gas or another H source, into hydride species, and to the use thereof for the preparation of complex hydrides and organometallic compounds.

Provided herein are metal organic frameworks comprising metal nodes and N-donor organic ligands which have high selectivity and stability in the present of gases and vapors including H.sub.2S, H.sub.2O, and CO.sub.2. Methods include capturing one or more of H.sub.2S, H.sub.2O, and CO.sub.2 from fluid compositions, such as natural gas.

Disclosed are a novel catalyst system which is a catalyst system for selectively oligomerizing olefin including ethylene and may trimerize and tetramerize olefin, different from the catalyst system for olefin oligomerization reported until now, and a method for preparing an olefin oligomer using same. The present invention provides a catalyst system for olefin oligomerization, including a ligand compound represented by Formula 1; a chromium compound; and a metal alkyl compound, and a method for preparing an olefin oligomer using same.

Catalyst activators and methods for their preparation and their use in processes for polymerizing olefins are described. In particular, catalyst activators derived from aluminum alkyls and their use with metallocene type catalyst systems and/or conventional-type transition metal catalyst systems are described.

Two rhodamine reversible fluorescent sensor derivatives, L.sub.1 and L.sub.2, bearing 2-methoxy-1-naphthaldehyde and 5-bromo-3-methoxy salicylaldehyde units were synthesized using microwave-assisted organic synthesis and used for selective and sensitive reversible sequential fluorescence detection of aluminum ion (Al.sup.3+) and azide (N.sub.3.sup.) in aqueous acetonitrile solution via the fluorescence spectral changes. Stoichiometry and binding mechanisms for both sensors are well characterized and established by the respective spectroscopic techniques. L1 and L2 sensors are useful for the analysis of Al3+ and N3 in environmental samples and biological studies

Process to prepare alkylaminoxane by reacting, in the absence of solvent, 1 molar equivalent of alkylaluminium with 0.1 to 0.8 molar equivalent of a substituted allylic alcohol of the formula (I) wherein R1 and R2 are independently selected from aliphatic and aromatic hydrocarbon groups, and each R3, R4, and R5 is independently selected from aliphatic and aromatic hydrocarbon groups and a hydrogen atom.

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The invention relates to a method for producing organometallic compounds RMn (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M and R=alkyl residue with 2 to 18 C atoms, in which method an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.

A precursor composition according to an embodiment of the present invention contains a mixture of a Group IV organic compound and any one compound selected from an organic aluminum compound, an organic gallium compound, or an organic germanium compound.

The invention relates to a method for producing organometallic compounds RMn (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M and R=alkyl residue with 2 to 18 C atoms, in which method an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.

The invention relates to powdery, highly reactive alkali and alkaline earth hydride compounds, and to mixtures with elements of the third main group of the periodic table of elements (PTE) and to the preparation thereof by reacting alkali or alkaline earth metals in the presence of finely dispersed metals or compounds of the third main group of the PTE, wherein the latter have one or more hydride ligands or said hydride ligands are converted in situ, under the prevailing reaction conditions, i.e., in the presence of hydrogen gas or another H source, into hydride species, and to the use thereof for the preparation of complex hydrides and organometallic compounds.