SYNTHESIS AND CRYSTAL STRUCTURE OF [ReO(AHP)2(PPh3)]Cl (HAHP=2-AMINO-3-HYDROXYPYRIDINE): A NOVEL CATIONIC MONOOXORHENIUM(V) COMPLEX.

The cationic complex [ReO(ahp)2(PPh3]+ was isolated as the chloride salt from the reaction of trans- [ReOCl3(PPh3)] and 2-amino-3-hydroxypyridine (Hahp) in ethanol. Coordination of the chelates only occurs through the amino nitrogen and the phenolate oxygen of ahp-. The X-ray crystal structure shows a distorted octahedral geometry, in which a phenolate oxygen coordinated trans to the oxo group and the rhenium atom is displaced by 0.2520(1) Å out of the mean equatorial plane towards the oxo oxygen. [ABSTRACT FROM AUTHOR]