Synthesis, characterization and crystal structure of a dodeca-nuclear cobalt (II)cube-octahedron

<p>The new cobalt (II) complex, [Co<sub>12 </sub>(cpip)<sub>12</sub>(H<sub>2</sub>O)<sub>12</sub>].18.56H<sub>2</sub>O where H<sub>2</sub>cpip = 2-(carboxy-phenyl) amino-propanoic acid, was isolated as pink-like prism crystals from the reaction of Co(NO<sub>3</sub>)<sub>2</sub>.6H<sub>2</sub>O and in an ethanolic solution. The complex characterized by Fourier Transform Infrared Spectroscopy (FTIR) X-ray single-crystal diffraction. symmetric unit title contains twelve atoms arranged a cube-octahedron. Each divalent cation is iso-octahedrally coordinated to four oxygen two cpip2- ligands equatorial plane. axial plane occupied amino nitrogen atom one water molecule. lattice molecule metallocycle cavity involved OH­­­O hydrogen bonding with molecules.</p>