6533b86efe1ef96bd12cc02f

RESEARCH PRODUCT

Methylresorcinarene: a reaction vessel to control the coordination geometry of copper(II) in pyridine N-oxide copper(II) complexes

Rakesh PuttreddyNgong Kodiah Beyeh

subject

Magnetic Resonance SpectroscopyPyridinesmethylresorcinareneInorganic chemistrychemistry.chemical_elementPyridine-N-oxideNuclear magnetic resonance spectroscopyCopperInorganic Chemistrychemistry.chemical_compoundCrystallographychemistryOctahedronX-Ray DiffractionCoordination ComplexesPyridinecopper complexesCalixarenesProtecting groupSingle crystalta116CopperCoordination geometry

description

Pyridine and 2-picolinic acid N-oxides form 2 : 2 and 2 : 1 ligand : metal (L : M) discrete L2M2 and polymeric complexes with CuCl2 and Cu(NO3)2, respectively, with copper(ii) salts. The N-oxides also form 1 : 1 host-guest complexes with methylresorcinarene. In combination, the three components form a unique 2 : 2 : 1 host-ligand-metal complex. The methylresorcinarene acts as a reaction vessel/protecting group to control the coordination of copper(ii) from cis-see-saw to trans-square planar, and from octahedral to square planar coordination geometry. These processes were studied in solution and in the solid state via(1)H NMR spectroscopy and single crystal X-ray diffraction.

10.1039/c5dt01143dhttp://juuli.fi/Record/0009228715