Synthesis and spectroscopic study of hexadecaalkyl-substituted rare-earth diphthalocyanines |
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| Authors: | V E Pushkarev A V Ivanov I V Zhukov E V Shulishov Yu V Tomilov |
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| Institution: | (1) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991 Moscow, Russian Federation;(2) Institute of Physiologically Active Compounds, Russian Academy of Sciences, 142432 Chernogolovka, Moscow region, Russian Federation |
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| Abstract: | New hexadecaalkyl-substituted diphthalocyanine complexes of lanthanides RPc2Ln (R = Et, or Bu; Ln = Lu, Dy, or Eu) were synthesized by three methods: in solution in the presence of 1,8-diazabicyclo5.4.0]undec-7-ene, in a melt of a mixture of the reagents, and under microwave irradiation. The first of the above-mentioned procedures has an advantage for the preparation of Dy and Eu diphthalocyanines, whereas the melt synthesis is a method of choice for the preparation of Lu complexes. The reaction time decreases in going from the first to the third method. The structures of the complexes were confirmed by mass spectrometry, NMR spectroscopy, and electronic absorption spectroscopy. |
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| Keywords: | diphthalocyanines rare-earth elements 1H NMR spectra electronic absorption spectra |
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