Compounds are synthesized with bicyclic amidinate ligands attached to one or more metal atoms. These compounds are useful for the synthesis of materials containing metals. Examples include pure metals, metal alloys, metal oxides, metal nitrides, metal phosphides, metal sulfides, metal selenides, metal tellurides, metal borides, metal carbides, metal silicides and metal germanides. Techniques for materials synthesis include vapor deposition (chemical vapor deposition and atomic layer deposition), liquid solution methods (sol-gel and precipitation) and solid-state pyrolysis. Copper metal films are formed on heated substrates by the reaction of copper(I) bicyclic amidinate vapor and hydrogen gas, whereas reaction with water vapor produces copper oxide. Silver and gold films were deposited on surfaces by reaction of their respective bicyclic amidinate vapors with hydrogen gas. Reaction of cobalt(II) bis(bicyclic amidinate) vapor, ammonia gas and hydrogen gas deposits cobalt metal films on heated substrates, while reaction with ammonia produces cobalt nitride and reaction with water vapor produces cobalt oxide. Ruthenium metal films are deposited by reaction of ruthenium(II) bis(bicyclic amidinate) or ruthenium(III) tris(bicyclic amidinate) at a heated surface either with or without a co-reactant such as hydrogen gas or ammonia or oxygen. Suitable applications include electrical interconnects in microelectronics and magnetoresistant layers in magnetic information storage devices. Hafnium oxide films are deposited by reaction of hafnium(IV) tetrakis(bicyclic amidinate) with oxygen sources such as water, hydrogen peroxide or ozone. The HfO.sub.2 films have high dielectric constant and low leakage current, suitable for applications as an insulator in microelectronics. The films have very uniform thickness and complete step coverage in narrow holes.

The invention provides a method for synthesizing musk macrocycles comprising contacting an easily accessible diene starting materials bearing a Z-olefin moiety and performing a ring closing metathesis reaction in the presence of a Group 8 olefin metathesis catalyst. ##STR00001##

The invention relates to a method for producing a formate, the method including a first step of reacting hydrogen with carbon dioxide, a hydrogen carbonate or a carbonate using a catalyst in the presence of a solvent to form a formate in the reaction liquid, wherein the reaction is a two-phase system in which an organic phase and an aqueous phase are present in a separated state in the solvent, and a base concentration in the reaction is 2.5 mol/L or more.

Methods for depositing a film using a non-halide oxygen-free organometallic precursors are disclosed. The method includes forming the film on a substrate surface by exposing the surface to the precursor and a reducing agent, the precursor has a general formula (1): M-L.sub.1L.sub.2, wherein M is a metal, L.sub.1 is a first aromatic ligand having a hapticity selected from η.sup.3, η.sup.5, or η.sup.6, L.sub.2 is a ligand having a hapticity selected from of η.sup.3, η.sup.4, η.sup.5, η.sup.6, η.sup.7, η.sup.8, η.sup.9 or η.sup.10. The first aromatic ligand, L.sub.1, may include a structure according to formula (II)

##STR00001##

wherein each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 is independently selected from a group consisting of H, methyl, ethyl, n-propyl, isopropyl, n-butyl and iso-butyl. The ligand, L.sub.2, can be independently selected from a group consisting of hexa-1,3,5-triene, 2-methylene-1,3-propanediyl, 1,2-diethenylcyclohex-1-ene, cyclooctatetraene, cyclooctatetraenide anion, styrene, o-quinodimethane, phenyl thiocyanate, phenyl isothiocyanate, (3-methylphenyl)-methylene and derivatives thereof.

This invention provides a reversible hydrogen loading and discharging system and a reversible method for loading and discharging hydrogen. The system and the methods of this invention comprise ethylene glycol as a liquid organic hydrogen carrier and at least one transition metal. By reacting ethylene glycol with at least one transition metal; at least one hydrogen molecule and at least one oligoester of ethylene glycol are formed (hydrogen releasing)⋅, and by reacting at least one oligoester of ethylene glycol with at least one transition metal and at least one hydrogen molecule, at least one ethylene glycol is formed (hydrogen loading).

The invention is directed to ruthenium-based metathesis catalysts of the Grubbs-Hoveyda type. The new 2-aryloxy-substituted ruthenium catalysts described herein reveal rapid initiation behavior. Further, the corresponding styrene-based precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from styrene-based precursors which can be prepared in a cost-effective manner.

The new Grubbs-Hoveyda type catalysts are suitable to catalyze ring-closing metathesis (RCM), cross metathesis (CM) and ring-opening metathesis polymerization (ROMP). Low catalyst loadings are necessary to convert a wide range of substrates including more complex and critical substrates via metathesis reactions at low to moderate temperatures in high yields within short reaction times.

The present invention relates to a transition metal complex having a PNNP4 ligand, which is easy to manufacture and handle and is relatively inexpensively available, and a method for manufacturing the same, as well as a method using this transition metal complex as a catalyst for hydrogenation reduction of ketones, esters and amides to manufacture corresponding alcohols, aldehydes, hemiacetals and hemiaminals, a method using this transition metal complex as a catalyst for oxidation of alcohols, hemiacetals and hemiaminals to manufacture corresponding carbonyl compounds, and a method using this transition metal complex as a catalyst for dehydrogenation condensation between alcohols and amines to manufacture alkylamines.

This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals and pharmaceuticals.

The invention relates to a method for producing a formate, the method including reacting hydrogen with carbon dioxide, a hydrogen carbonate or a carbonate using a catalyst in the presence of a solvent, wherein the reaction is a two-phase system in which an organic solvent and an aqueous solvent are present in a separated state in the solvent, and the catalyst is at least one selected from a ruthenium complex represented by the formula (1) in the specification, a tautomer or stereoisomer thereof, and a salt compound of the complex, tautomer or stereoisomer.

The present invention relates to an organoruthenium compound raw material for a chemical deposition method. An organoruthenium compound is represented by the following Formula 1 in which a trimethylenemethane-based ligand (L.sub.1), and two carbonyl ligands and a ligand X coordinate to divalent ruthenium. In Formula 1, the trimethylenemethane-based ligand (L.sub.1) is represented by the following Formula 2. Besides, the ligand X is any one of an isocyanide ligand, a pyridine ligand, an amine ligand, an imidazole ligand, a pyridazine ligand, a pyrimidine ligand, and a pyrazine ligand.

##STR00001## wherein a substituent R of the ligand L.sub.1 is hydrogen, or any one of an alkyl group, a cyclic alkyl group, an alkenyl group, an alkynyl group, and an amino group having a predetermined number of carbon atoms.