Abstract: New hexa-coordinate iron (II) complexes comprising compounds of formula (I) are described. These compounds comprise a tetradentate ligand with donor atoms comprising nitrogen and phosphorus. These complexes are shown for the first time to be useful catalysts for the hydrogenation of ketones, aldehydes, or imines to produce alcohols or amines, and the asymmetric hydrogenation of prochiral ketones or imines to produce non-racemic alcohols or amines. The source of the hydrogen can be hydrogen gas or a hydrogen-donating molecule such as isopropanol or hydrogen-donating mixture such as formic acid and an amine depending on the structure of the catalyst. In certain embodiments, the axial ligands on the catalyst comprise organonitrile ligands, carbonyl ligands, isonitrile ligands, or combinations thereof. The catalysts and the preparation thereof are disclosed. A reaction using phosphine and diamine precursors that is templated by the iron ion is the preferred route to the catalysts.

Abstract: New hexa-coordinate iron (II) complexes comprising compounds of formula (I) are described. These compounds comprise a tetradentate ligand with donor atoms comprising nitrogen and phosphorus. These complexes are shown for the first time to be useful catalysts for the hydrogenation of ketones, aldehydes, or imines to produce alcohols or amines, and the asymmetric hydrogenation of prochiral ketones or imines to produce non-racemic alcohols or amines. The source of the hydrogen can be hydrogen gas or a hydrogen-donating molecule such as isopropanol or hydrogen-donating mixture such as formic acid and an amine depending on the structure of the catalyst. In certain embodiments, the axial ligands on the catalyst comprise organonitrile ligands, carbonyl ligands, isonitrile ligands, or combinations thereof. The catalysts and the preparation thereof are disclosed. A reaction using phosphine and diamine precursors that is templated by the iron ion is the preferred route to the catalysts.

Abstract: The present disclosure relates to processes and methods of generating hydrogen via the hydrolysis or solvolyis of a compound of the formula (I), R1R2HNBHR3R4, using ligand-stabilized homogeneous metal catalysts.

Abstract: Disclosed are cationic ruthenium arene complexes of Formula (I): [Ru(D-Z1—NHR1)(Ar)(LB)n]r+[Y?]r, wherein Ar is optionally substituted aryl, D-Z1—NHR1 is a coordinated bidentate ligand wherein D, Z1, R1 and R2 are as defined herein, and where R1 and Ar, or R2 and Ar may be linked together, n is 0 or 1, r is 1 or 2, LB is a neutral Lewis base, and Y is a non-coordinating anion. The complexes are active catalysts for reduction reactions, including the transfer-hydrogenation of carbon-oxygen (C?O) and carbon-nitrogen (C?N) double bonds.

Abstract: The present disclosure relates to processes and methods of generating hydrogen via the hydrolysis or solvolyis of a compound of the formula (I), R1R2HNBHR3R4, using ligand-stabilized homogeneous metal catalysts.

Abstract: The present disclosure includes catiome complexes of iron, ruthenium, and osmium, and their use as catalysts in organic synthesis transformations including the hydrogenation of unsaturated compounds. The complexes are represented by the following formulae I, II, III, IV, and V, wherein M is Fe, Ru or Os, P is a monodentate ligand with a phosphorus donor atom, P2 is a bidentate neutral ligand with two phosphorus donor atoms, N2 is a bidentate neutral ligand with two nitrogen donor atoms, PN is a bidentate neutral ligand with phosphorus and nitrogen donor atoms, PNNP is a tetradentate neutral ligand bonded to M via two phosphorus and two nitrogen atoms, X is any anionic ligand, LB is any neutral Lewis base, Y is any non-coordinating anion, n is 0, 1, or 2, m is 1 or 2, q is 0 or 1, r is 1 or 2 and q+r=2.