Crystal structure of Sm(Phen)(i-Bu2PS2)3·MeCN and photoluminescence properties of SmL(i-Bu2PS2)3 (L = Phen, 2,2′-bipy)

It is revealed that at 300 K Sm(Phen)( i -Bu 2 PS 2 ) 3 (I) and Sm(2,2′-Bipy)( i -Bu 2 PS 2 ) 3 (II) complexes have photoluminescence properties typical of the Sm 3+ ion. In the spectra, three bands are observed with 7n max = 564 nm, 600 nm, and 645 nm. Single crystals of Sm(Phen)( i -Bu 2 PS 2 ) 3 ·MeCN ( III ) are grown, and the structure of the compound is determined based on the X-ray diffraction data (X8 Apex diffractometer, Mo K 6h radiation, 7685 F hkl , 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; 6h = 89.218(1)°, β = 75.555(1)°, γ = 73.484(1)°, V = 2386.6(1)Å 3 , Z =2, ρ calc = 1.391 g/cm 3 , P 1 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 N 2 S 6 tetragonal antiprism. It is shown that the structure of III includes dimeric assemblies of the molecules of complex I .