Crystal Structure and Luminescence of the [Dy(NO3)2(HMPA)4](NO3) Complex

Abstract

The crystal structure of the [Dy(NО₃)₂(HMPA)₄](NО₃) complex (HMPA is hexamethylphosphorotriamide) is studied by X-ray diffraction analysis. The crystals are constructed of two crystallographically independent complex cations [Dy(NО₃)₂(HMPA)₄]⁺ and outer-sphere [NO₃]⁻¹ groups. The structure is represented by separate С₂₄Н₇₂DyN₁₅O₁₃P₄ 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.