Complexes of La(Ⅲ),Nd(Ⅲ),Sm(Ⅲ),Eu(Ⅲ),Gd(Ⅲ),Dy(Ⅲ),Er(Ⅲ),Yb(Ⅲ)and Y(Ⅲ)with piperonal isonicotinoyl hydrazone(HPIN)have been synthesized in DMF and EtOH.T
Infrared spectra of (n-C<sub>9</sub>H<sub>19</sub>NH<sub>3</sub>)<sub>2</sub>CuCl<sub>4</sub> in three solid phases were investigated. It was found that the pha