A quadruple-decker sandwich complex of lutetium (III) based on a clamshell-type phthalocyanine ligand has been obtained in a high yield (90%). The obtained compound was characterized by a combination of high resolution MALDI TOF/TOF mass spectrometry, UV–Vis–NIR, EPR and ¹H NMR spectroscopies. An investigation of the absorption spectrum in the NIR region showed maxima at 918 nm and in the 1260–1520 nm area. The EPR data and the intense absorption in the NIR region suggest this complex to be a stable biradical.

中文翻译：

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夹心式蛤壳型酞菁-四层双核（III）配合物的合成及光谱性质

以高产率（90％）获得了基于蛤壳型酞菁配体的（III）的四层双层夹心复合物。所获得的化合物通过高分辨率MALDI TOF / TOF质谱，UV-Vis-NIR，EPR和¹ H NMR光谱相结合进行表征。对NIR区域的吸收光谱进行的研究显示，最大吸收波长在918 nm和1260–1520 nm区域。EPR数据和在NIR区域的强烈吸收表明该络合物是稳定的双自由基。