Potassium and Cesium Fluorinated β-Diketonates: Effect of a Cation and Terminal Substituent on Structural and Thermal Properties

Danil V Kochelakov; Evgeniia S Vikulova; Natalia V Kuratieva; Ilya V Korolkov

doi:10.3390/molecules28155886

Potassium and Cesium Fluorinated β-Diketonates: Effect of a Cation and Terminal Substituent on Structural and Thermal Properties

Molecules. 2023 Aug 4;28(15):5886. doi: 10.3390/molecules28155886.

Authors

Danil V Kochelakov¹, Evgeniia S Vikulova¹, Natalia V Kuratieva¹, Ilya V Korolkov¹

Affiliation

¹ Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Acadademic Lavrentiev Ave 3, 630090 Novosibirsk, Russia.

Abstract

As potential precursors for the synthesis of fluoroperovskites, a family of heavy alkali metal (M^I = K, Cs) fluorinated β-diketonates were prepared and characterized by elemental analysis, IR, and powder-XRD. The crystal structures of the new six complexes, M^I(β-dik^F)(H₂O)_X, X = 0 or 1, were also determined. The structural diversity of this poorly explored class of complexes was discussed, including the preferred types of cation polyhedra and the ligand coordination modes, and the thermal properties of the metal β-diketonates were studied by TG-DTA in an inert (He) atmosphere. The data obtained allowed us to reveal the effect of the metal cation and the terminal substituent on the structural and thermal features of this family of complexes.

Keywords: alkali metals; beta-diketonates; fluorinated complexes; polyhedra; thermal analysis.

Grants and funding

N 121031700313-8 and N 121031700314-5/Ministry of Science and Higher Education of the Russian Federation