Microwave-irradiated synthesis and Biological applications of Transition metal (II) complexes of Unsymmetrical Quadridentate (ON NO donor) Schiff base ligand

An efficient and environmentally benign method using microwave irradiation (MWI) have been applied for the synthesis of mononuclear square planar transition metal (II) [e.g. Co2+, Ni2+ and Cu2+] complexes with an unsymmetrical tetradentate bi-anionic Schiff base ligand. All the eco-friendly synthesized transition metal complexes were characterised by elemental analysis, conductivity & magnetic moment measurements and common spectroscopic methods (vis. IR, UV-Visible and 1H NMR spectroscopy respectively). The biological evaluation as anti-bacterial and human pathogenic anti-fungal activities of the investigating compounds show that the investigated complexes were found to be far active than the ligand towards tested microbes under the identical experimental conditions and the antimicrobial activity trend follows the order: Cu-complex > Co-complex > Ni-complex > Ligand

Perylene bisimide cyclophanes as receptors for planar transition structures – Catalysis of stereoinversions by shape-complementarity and noncovalent π–π interactions

Perylene bisimide (PBI) cyclophanes have been shown to form ideal hosts for large aromatic molecules, offering rigid cavities and ideal monomer spacing for π–π stacking interactions between host and guest....

Transition between [R]- and [S]-Stereoisomers without Bond Breaking

We for the first time shown that transition between (R) and (S) stereoisomers via a planar transition state or an intermediate structure without having to break a bond is possible. Rigorous theoretical calculations have been used to study this novel phenomenon and to characterize the energetic, structure, dynamic and kinetic properties.

Transition between [R]- and [S]-Stereoisomers without Bond Breaking

We for the first time shown that transition between (R) and (S) stereoisomers via a planar transition state or an intermediate structure without having to break a bond is possible. Rigorous theoretical calculations have been used to study this novel phenomenon and to characterize the energetic, structure, dynamic and kinetic properties.

Transition between [R]- and [S]-stereoisomers without bond breaking

First examples of racemization of tetrahedral tetracoordinated centers via a planar transition state or an intermediate structure.

Classical Racemization of Tetrahedral Tetracoordinate Centers via a Planar Transition State or an Intermediate Structure

We for the first time shown that transition between (R) and (S) stereoisomers via a planar transition state or an intermediate structure without having to break a bond is possible. Rigorous theoretical calculations have been used to study this novel phenomenon and to characterize the energetic, structure, dynamic and kinetic properties.

Planar transition metal oxides SERS chips: a general strategy

Group IVB, VB and VIB transition metal oxides planar SERS chips can achieve a low limit of detection below 10−9 M.