title: Novel near-IR absorbing phenyl-substituted phthalo- and naphthalocyanine complexes of lanthanide(III): synthesis and spectral and electrochemical properties.
abstract: A series of novel phenyl-substituted planar and sandwich-type complexes of Eu, Er and Lu with phthalo and naphthalocyanine ligands was obtained. A successful synthesis of dinaphthalocyanines from the ligand is described. A selective synthetic approach to the phenyl-substituted triphthalocyanine complexes from the ligand and acetylacetonate salts of lanthanides was developed. Correlations between the ionic radii of the central metal and absorption maxima were obtained for sandwich-type complexes. It was found that intervalence (IV) bands for dinaphthalocyanine complexes were red-shifted about 200 nm in comparison with corresponding diphthalocyanines, reaching 1797 nm for the Eu complex. The electrochemical behaviour of planar and sandwich-type Lu complexes was investigated. For the first time a spectroelectrochemical study of multistep reduction and oxidation processes for a triple-decker complex was carried out using the example of the triphthalocyanine of Lu. The structures of the compounds obtained were determined by (1)H NMR and high resolution MALDI TOF/TOF. The first single-crystal structure for an aryl-substituted double-decker complex was described using the example of the diphthalocyanine of Lu, showing the presence of intramolecular π-π interactions between phenyl groups.
authors: Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. dubinina.t.vid@gmail.com.
authors: Tatiana V
authors: TV
authors: Dubinina
authors: Kseniya V
authors: KV
authors: Paramonova
authors: Stanislav A
authors: SA
authors: Trashin
authors: Nataliya E
authors: NE
authors: Borisova
authors: Larisa G
authors: LG
authors: Tomilova
authors: Nikolay S
authors: NS
authors: Zefirov
mesh_terms: D000042:Absorption; D060326:Chemistry Techniques, Synthetic; D004563:Electrochemistry; D007259:Infrared Rays; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D013057:Spectrum Analysis
chemical_list: D028581:Lanthanoid Series Elements; D009942:Organometallic Compounds