CRYSTAL STRUCTURE OF Sm(Phen)(i-Bu2PS2)3·MeCN AND PHOTOLUMINESCENCE PROPERTIES OF SmL(i-Bu2PS2)3 (L = Phen, 2,2′-Bipy)
T. E. Kokina, R. F. Klevtsova, E. M. Uskov, L. A. Glinskaya, Y. A. Bryleva, S. V. Larionov
Keywords: different-ligand complex, diisobutyldithiophosphinate, Sm, Phen, 2, 2?-Bipy, crystal and molecular structure, photoluminescence
Pages: 976-981
Abstract
It is revealed that at 300 K Sm(Phen)(i-Bu2PS2)3 (I) and Sm(2,2′-Bipy)(i-Bu2PS2)3 (II) complexes have photoluminescence properties typical of the Sm3+ ion. In the spectra, three bands are observed with λmax = 564 nm, 600 nm, and 645 nm. Single crystals of Sm(Phen)(i-Bu2PS2)3·MeCN (III) are grown, and the structure of the compound is determined based on the X-ray diffraction data (X8 Apex diffractometer, MoKα radiation, 7685 Fhkl, R = 0.0258). Crystals of III are triclinic, unit cell parameters are a = 11.0554(3) Å, b = 15.0446(3) Å, c = 15.4849(4) Å; α = 89.218(1)°, β = 75.555(1)°, γ = 73.484(1)°, V = 2386.6(1) Å3, Z = 2, ρcalc = 1.391 g/cm3, P space group. The structure of III is formed from the molecules of mononuclear complex I and MeCN molecules. A coordination polyhedron of the Sm atom is an N2S6 tetragonal antiprism. It is shown that the structure of III includes dimeric assemblies of the molecules of complex I.
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