The reaction of [Et3NH] [(m-RE)(m-CO)Fe2(CO)6] (E S, Se) (1) with aryl azides gives bridging triazenido complexes (m-RE)(mp-R1C6H4N3H)Fe2(CO)6 (2-8) (2, RE ButS, R1 H; 3, RE PhS, R1 H; 4, RE ButS, R1 Cl; 5, RE ButS, R1 MeO; 6, RE PhS, R1 MeO; 7, RE PhSe, R1 H; 8, RE PhSe, R1 Cl). These complexes were characterized by elemental analyses and 1H-NMR and IR spectroscopy. The structure of complex 2, established by single-crystal X-ray diffraction analysis, shows that the triazenido ligand binds to two iron centers in a bridging bidentate fashion.

Chlorinated phthalocyanine iron (II) complex is an excellent catalyst for the oxidation of alkanes and alkenes with molecular oxygen in the presence of acetaldehyde under O2 (1 atm) at room temperature. The catalyst can be easily separated and reused for the next reaction.

Two new organocatalysts derived from L-proline and a novel chiral spiro diamine bearing a C2 symmetric backbone, were introduced for an asymmetric aldol reaction in moderate to good asymmetric induction in up to 76% ee and high yields.

The chiral mononuclear complex of Re(I)-NOBIN Schiff base (NOBIN=1-amino-10-hydroxylbinaphthyl) was synthesized via the reaction of Re(CO)5Cl and corresponding tridentate ligand in methanol. The structure analysis reveals that the central metal coordinates with nitrogen atom of imine and oxygen atom of salicylaldehyde form a six-membered ring, while the left uncoordinated phenol group adjacent to the binaphthyl backbone forms a hydrogen bonding with water molecule coordinated with the Re(I) ion. This mononuclear complex shows some catalytic ability in asymmetric epoxidation and aziridination with moderate results

Molybdenum (Ⅵ)-cis-dioxo complexes bearing sugar derived chiral Schiff-base ligands of general formula MoO2(L)(Solv) have been synthesized (with L=N-salicylidene-glucosamine; N-salicylidene-1,3,4,6-tetraacetyl-α-glucosamine; N-5-chlorosalicylaldehyde-1,3,4,6-tetraacetyl-α-glucosamine; N-salicylaldehyde-1,3,4,6-tetraacetyl-β-glucosamine; N-5-chlorosalicylaldehyde-1,3,4,6-tetraacetyl-β-glucosamine; N-salicylidene-4,6-Oethylidene-β-glucopyranosylamine, and Solv=methanol or ethanol). Analytical data including IR, 1D- and 2D-NMR, MS and EA are in accord with their descriptions as monometallic compounds with one ligand L and a coordinated solvent molecule. One of the complexes and two of the chiral ligands have been examined by X-ray crystallography. In the case of the sugar-OH groups being protected as acetyl groups, one of them is selectively deacetylated and coordinates to the metal centre during the reaction process. Furthermore, an inversion takes place at the C1 carbon atom. This uncommon behaviour has been examined in some detail. The high catalytic activity of the title compounds for epoxidation is also described as well as the moderate enantiomeric induction of up to 30% ee for cis-β-methyl styrene.