Crystal structure of tris-[bis-(2,6-diiso-propyl-phen-yl) phosphato-κ O]penta-kis-(methanol-κ O)europium methanol monosolvate

Alexey E Kalugin; Konstantin A Lyssenko; Mikhail E Minyaev; Dmitrii M Roitershtein; Lada N Puntus; Evgenia A Varaksina; Ilya E Nifant'ev

doi:10.1107/S2056989019015421

Crystal structure of tris-[bis-(2,6-diiso-propyl-phen-yl) phosphato-κ O]penta-kis-(methanol-κ O)europium methanol monosolvate

Acta Crystallogr E Crystallogr Commun. 2019 Nov 19;75(Pt 12):1892-1896. doi: 10.1107/S2056989019015421. eCollection 2019 Dec 1.

Authors

Alexey E Kalugin^{1

2}, Konstantin A Lyssenko^{3

4}, Mikhail E Minyaev^{1

5}, Dmitrii M Roitershtein^{1

5}, Lada N Puntus^{1

6}, Evgenia A Varaksina^{1

7}, Ilya E Nifant'ev^{1

4}

Affiliations

¹ A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow, 119991, Russian Federation.
² Moscow Institute of Physics and Technology, Department of Biological and Medical Physics, 9 Institutskiy Per., Dolgoprudny, Moscow Region, 141701, Russian Federation.
³ G.V. Plekhanov Russian University of Economics, 36, Stremyanny Per., Moscow, 117997, Russian Federation.
⁴ Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory, Building 3, Moscow, 119991, Russian Federation.
⁵ N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, Moscow, 119991, Russian Federation.
⁶ V.A. Kotel'nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, 11-7 Mokhovaya Str., Moscow, 125009, Russian Federation.
⁷ P.N. Lebedev Physical Institute, Russian Academy of Sciences, 53 Leninsky Prospect, Moscow 119991, Russian Federation.

Abstract

The mononuclear title complex, [Eu(C₂₄H₃₄O₄P)₃(CH₄O)₅]·CH₄O, (1), has been obtained as a minor product in the reaction between EuCl₃(H₂O)₆ and lithium bis-(2,6-diiso-propyl-phen-yl) phosphate in a 1:3 molar ratio in a methanol medium. Its structure exhibits monoclinic (P2₁/c) symmetry at 120 K and is isostructural with the La, Ce and Nd analogs reported previously [Minyaev et al. (2018a ▸). Acta Cryst. C74, 590-598]. In (1), all three bis-(2,6-diiso-propyl-phen-yl) phosphate ligands display the terminal κ¹ O-coordination mode. All of the hy-droxy H atoms are involved in O-H⋯O hydrogen bonding, exhibiting four intra-molecular and two inter-molecular hydrogen bonds. Photophysical studies have demonstrated luminescence of (1) with a low quantum yield.

Keywords: coordination compound; crystal structure; europium; hydrogen bonding; isostructural; luminescence; organophosphate.

Grants and funding

This work was funded by Russian Science Foundation grant 17-13-01357.