The title complex, [ZnCl2(C12H18N2O)]·0.5H2O, is a mononuclear zinc(II) compound derived from the zwitterionic form of the Schiff base 2-[3-(dimethyl­amino)propyl­imino­meth­yl]­phenol. The ZnII atom is four-coordinated by the imine N and the phenolate O atoms of the Schiff base ligand, and by two chloride ions, in a distorted tetra­hedral coordination geometry. The dimethyl­ammonio group is disordered over two positions with site occupancies of 0.51 (3) and 0.49 (3). In the asymmetric unit, there is also a disordered water mol­ecule with a partial occupancy of 0.5. In the crystal structure, the water mol­ecules are linked to the Schiff base complex mol­ecules through inter­molecular N—H⋯O hydrogen bonds. Mol­ecules are further linked through additional inter­molecular N—H⋯O hydrogen bonds, forming chains running along the b axis.

No abstract

The title complex, [ZnI2(C12H18N2O)], is a mononuclear zinc(II) compound derived from the zwitterionic form of the Schiff base (E)-2-[(3-dimethyl­amino­propyl­imino)meth­yl]phenol. The ZnII atom is four-coordinated by the imine N and phenolate O atoms of the Schiff base ligand, and by two iodide ions in a tetra­hedral coordination geometry. In the crystal structure, mol­ecules are linked through inter­molecular N—H⋯O hydrogen bonds, forming chains running along the b axis.

A pair of structurally similar new dioxomolybdenum(VI) complexes, [MoO 2 L 1 (EtOH)] • EtOH (1) and [MoO 2 L 2 (MeOH)] (2), where L 1 and L 2 are the dianionic form of 2-[(2-hydroxyphenylimino)methyl]-6-methoxyphenol (H 2 L 1) and 2-ethoxy-6-[(2-hydroxyphenylimino)methyl]phenol (H 2 L 2), respectively, were prepared and characterized by IR and UV-Vis spectroscopy, as well as single crystal X-ray diffraction. X-ray analyses indicate that the complexes are dioxomolybdenum(VI) species. Complex 1 contains ethanol as co-ligand, and complex 2 contains methanol as co-ligand. The coordination geometry around the Mo atoms can be described as distorted octahedron, with one imino-N and two phenolate-O of the Schiff base ligand, and one oxo group defining the equatorial plane, and with the other oxo group and one solvent-O occupying the axial positions. The catalytic oxidation property of the complexes with tert-butylhydroperoxide in CH 2 Cl 2 was studied. Both complexes have excellent catalytic properties on cyclooctene and cyclohexene, and good properties on 1-hexene and 1-octene.

An efficient and cooperative catalytic one-pot synthetic methodology for 8-hydroxyquinoline compounds has been developed.