The present invention relates to a metal phase transformation compound and a method for preparing the same.

The present invention describes an electrochemical system (1) to electrochemically reduce carbon monoxide (CO) into liquid methanol and gaseous H.sub.2, comprising an electrochemical cell with an anodic compartment with an anode (2) with a current collector (2A), at least a catalyst to electrochemically oxidize H.sub.2O, and a cathodic compartment with a cathodic electrolyte solution comprising the solvent (3), and a cathodic supporting electrolyte, the solvent (3) being water at basic pH of between 10.5 and 13.5, the reagent CO; a cathode (4) which comprises, on a current collector (4A) which is electrochemically inert, at least a cobalt molecular catalyst (4B) to electrochemically reduce CO into liquid methanol and the gas H.sub.2, a power supply (5) providing the energy necessary to trigger the electrochemical reactions involving the reagent.

Compounds can be used as catalysts, particularly in ring-opening polymerization reactions, including ring-opening co-polymerization (ROCOP) reactions, or in isocyanate trimerization reactions. The compounds have the formula L-M-X.sub.n, where L is a pyridyl-bis(iminophenolate) ligand, M is a metal ion, X is a co-ligand to balance the charge of the compound, and n is an integer from 0 to 7. The compounds can be prepared by base condensation of a pyridyl-diamine compound with an aldehyde or ketone.

A method of making a cobalt compound for feed supplements includes the steps of dissolving cobalt acetate tetrahydrate in water to form a mixture, adding an acid to the mixture, sonicating the mixture for a selected time, removing acetic acid from the mixture, and separating crystals of the cobalt compound from the mixture.

The present patent application relates to novel allyl cobalt complexes, to a process for their preparation and to their use for vapor deposition.

The present patent application relates to novel allyl cobalt complexes, to a process for their preparation and to their use for vapor deposition.

A composition includes: a metal compound including a ligand; and a solvent. The ligand is derived from a compound represented by formula (1). L represents an oxygen atom or a single bond; R.sup.1 represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms; R.sup.2 and R.sup.3 each independently represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, or R.sup.2 and R.sup.3 bind with each other and represent an alicyclic structure having 3 to 20 ring atoms together with the carbon atom to which R.sup.2 and R.sup.3 bond, or le and either R.sup.2 or R.sup.3 bind with each other and represent a lactone ring structure having 4 to 20 ring atoms or a cyclic ketone structure having 4 to 20 ring atoms together with the atom chain to which le and either R.sup.2 or R.sup.3 bond.

##STR00001##

A composition includes: a metal compound including a ligand; and a solvent. The ligand is derived from a compound represented by formula (1). L represents an oxygen atom or a single bond; R.sup.1 represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms; R.sup.2 and R.sup.3 each independently represent a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, or R.sup.2 and R.sup.3 bind with each other and represent an alicyclic structure having 3 to 20 ring atoms together with the carbon atom to which R.sup.2 and R.sup.3 bond, or le and either R.sup.2 or R.sup.3 bind with each other and represent a lactone ring structure having 4 to 20 ring atoms or a cyclic ketone structure having 4 to 20 ring atoms together with the atom chain to which le and either R.sup.2 or R.sup.3 bond.

##STR00001##

Metal ion-directed carboxylic acid functionalized polyoxometalate hybrid compounds, and their preparation method and applications in catalyzing the degradation of chemical warfare agent simulants. In the synthesis, Na.sub.2MoO.sub.4, p-hydroxybenzonic acid (PHBA), alanine (Ala), KCl, transition metal cations and As.sub.2O.sub.3 as raw materials and water are used as solvent. At room temperature, 2-chloroethyl ethyl sulfide (CEES) and the prepared polyoxometalate hybrid compounds were mixed together in anhydrous ethanol and stirred, and H.sub.2O.sub.2 was subsequently added into the reaction system. The catalytic reaction for the degradation of CEES was finished within 5 min under stirring. In the catalytic hydrolysis of diethyl cyanophosphonate (DECP), the catalyst, DECP, DMF and H.sub.2O were put together and mixed fully. The prepared polyoxometalate hybrid compounds have the advantages of high conversion, high selectivity and easy recyclability in catalyzing the degradation of two types of chemical warfare agent simulant.

The present invention relates to a cobalt-nitrosyl complex having photocleavable ligands. The cobalt-nitrosyl complex provided in one aspect of the present invention is adept in the delivery of NO, with exquisite temporal control using light, without gene editing. In addition, the complex provided in one aspect of the present invention is excellent in biocompatibility because it is chemically stable, non-toxic at cell level, and non-perturbative in cellular environments.