STRUCTURE OF [Dy(Phen)(C4H8NCS2)3]·3CH2Cl2 SOLVATE. MAGNETIC PROPERTIES AND PHOTOLUMINISCENCE OF [Ln(Phen)(C4H8NCS2)3] (Ln = Sm, Eu, Tb, Dy, Tm) COMPLEXES
a:2:{s:4:"TEXT";s:227:"Yu. A. Bryleva1, L. A. Glinskaya1, I. V. Korol’kov1, A. S. Bogomyakov2, M. I. Rakhmanova1, D. Yu. Naumov1, T. E. Kokina1,3, S. V. Larionov1";s:4:"TYPE";s:4:"html";}
a:2:{s:4:"TEXT";s:316:"1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Institute «International Tomography Center,» Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
3Novosibirsk State University, Novosibirsk, Russia";s:4:"TYPE";s:4:"html";}
Keywords: lanthanides, pyrrolidinedithiocarbamate, Phen, mixed-ligand complex, structure, magnetic properties, photoluminescence
Abstract
It is found that diffraction patterns of complexes I–V of the composition [Ln(Phen)(C4H8NCS2)3] (Ln = Sm, Eu, Tb, Dy, and Tm respectively) are similar. Single crystals of [Dy(Phen)(C4H8NCS2)3]·3CH2Cl2 (VI) obtained are. According to the X-ray crystallographic data, in the structure of VI the unit cell contains two crystallographically independent molecules of the [Dy(Phen)(C4H8NCS2)3] complex and six CH2Cl2 molecules. The N2S6 coordination polyhedron of the Dy atom is a distorted square antiprism. In the range of 2–300 K the magnetic properties of complexes I–V are studied. It is found that complex III passes to the magnetically ordered state; the spontaneous magnetization at 2 K is 24 600 G·cm3/mol. At 300 K compounds I–IV exhibit photoluminescence in the visible spectral range. It is found that the photoluminescence intensity of complex I is several times higher than the photoluminescence intensity of complexes II–IV.
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