TETRANUCLEAR COBALT(III) COMPLEX HAVING THE CUBANE CO4O4 CORE - SYNTHESIS AND STRUCTURAL-ANALYSIS OF THE COMPLEX CONTAINING (2-PYRIDYLMETHYL)GLYCINE

A tetranuclear cobalt(III) complex with the cubane Co4O4 core, [Co-4(p g)(4)(mu(3)-O)(4)] (Hpg: N-(2-pyridylmethyl)glycine), was prepared and the structure was determined by the X-ray diffraction method. This co mplex has the four N-H ... O intramolecular hydrogen-bonds between the amino group on one of the four cobalt atoms and the carboxyl group on another cobalt atom. Its neutral aqueous solution showed no spectral change for at least 3 days.