STRUCTURE OF [Dy(Phen)(C4H8NCS2)3]В·3CH2Cl2 SOLVATE. MAGNETIC PROPERTIES AND PHOTOLUMINISCENCE OF [Ln(Phen)(C4H8NCS2)3] (Ln = Sm, Eu, Tb, Dy, Tm) COMPLEXES
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
1Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia 2Institute В«International Tomography Center,» Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia 3Novosibirsk State University, Novosibirsk, Russia
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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