Crystal structure and luminescence of the [Dy(NO$_{3}$)$_{2}$(HMPA)$_{4}$](NO$_{3}$) complex

The crystal structure of the [Dy(NO$_{3}$)$_{2}$(HMPA)$_{4}$](NO$_{3}$) complex (HMPA is hexamethylphosphorotriamide) is studied by X-ray diffraction analysis. The crystals are constructed of two crystallographically independent complex cations [Dy(NО$_{3}$)$_{2}$(HMPA)$_{4}$]$^{+}$ and outer-sphere [NO$_{3}$]$^{-1}$ groups. The structure is represented by separate С$_{24}$Н$_{72}$DyN$_{15}$O$_{13}$P$_{4}$ complexes bound by van der Waals interactions with pronounced layered morphology. The coordination polyhedron of Dy(III) with coordination number 8 is represented by a distorted trigonal prism with two centered square faces. The results of investigation of the luminescent properties in the visible and near-IR regions are presented.