Sandwich double-decker Er(iii) and Yb(iii) complexes containing naphthalocyanine moiety: synthesis and investigation of the effect of a paramagnetic metal center.

Autor: Dubinina TV; Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. dubinina.t.vid@gmail.com and Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432 Chernogolovka, Moscow Region, Russian Federation., Kosov AD; Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. dubinina.t.vid@gmail.com., Petrusevich EF; Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. dubinina.t.vid@gmail.com., Borisova NE; Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. dubinina.t.vid@gmail.com and N. A. Nesmeyanov Institute of Organoelement Compounds, 28 Vavilov Str., 119334 Moscow, Russian Federation., Trigub AL; National Research Center 'Kurchatov Institute', pl. Akad. Kurchatova, dom 1, 123098 Moscow, Russian Federation., Mamin GV; Kazan Federal University, Institute of Physics, 18 Kremlyovskaya Str., 420008 Kazan, Russian Federation., Gilmutdinov IF; Kazan Federal University, Institute of Physics, 18 Kremlyovskaya Str., 420008 Kazan, Russian Federation., Masitov AA; Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 Academician Semenov avenue, 142432 Chernogolovka, Moscow Region, Russian Federation., Tokarev SV; Institute of Problems of Chemical Physics, Russian Academy of Sciences, 1 Academician Semenov avenue, 142432 Chernogolovka, Moscow Region, Russian Federation., Pushkarev VE; Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432 Chernogolovka, Moscow Region, Russian Federation., Tomilova LG; Chemistry Department, Lomonosov Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russian Federation. dubinina.t.vid@gmail.com and Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432 Chernogolovka, Moscow Region, Russian Federation.
Jazyk: angličtina
Zdroj: Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2019 Sep 21; Vol. 48 (35), pp. 13413-13422. Date of Electronic Publication: 2019 Aug 21.
DOI: 10.1039/c9dt03226f
Abstrakt: Novel heteroleptic Er(iii) and Yb(iii) naphthalocyaninato-phthalocyaninates containing an octa-phenyl or octa-phenoxysubstituted naphthalocyanine deck were synthesised and identified by 1 H NMR, EPR and high resolution MALDI-TOF/TOF mass spectrometry. Direct synthesis of novel homoleptic Yb(iii) bis (octa-phenylnaphthalocyaninate) was carried out. Downfield lanthanide induced shifts of the aromatic protons in target compounds were observed compared with the corresponding diamagnetic Lu(iii) complexes. In the near-IR absorption spectra, an increase in ionic radius from Lu(iii) to Er(iii) resulted in a bathochromic shift of the intervalence band up to 1473 nm. This work presents the first experimental EPR study of Yb(iii) bis naphthalocyaninate, where a set of magnetic parameters and properties (including spin, magnitude and sign of magnetic anisotropy parameter D, increased splitting in a crystal field, ferromagnetic f-π interaction etc.) were determined and interpreted by both EPR and SQUID techniques and supported by theoretical considerations.
Databáze: MEDLINE
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