Molecular structure of diantipyrylphenylmethane and its complex with neodymium nitrate

The structures of diantipyrylphenylmethane (DAPM) and its complex with neodymium nitrate [Nd(NO3)3 · DAPM · CH3OH] · 2CH3OH are determined by X-ray diffraction. The free ligand adopts a trans conformation with the opposite orientation of the oxygen atoms of the carbonyl groups. In the complex, diantipyrylphenylmethane acts as a bidentate ligand and coordinates the Nd atom through the carbonyl oxygen atoms, thus forming the eight-membered metallocycle. The coordination number of neodymium is nine (six O atoms of the bidentate nitrate groups, two O atoms of diantipyrylphenylmethane, and one O atom of the methanol molecule). © 2002 MAIK "Nauka/Interperiodica".