NEW γ-SUBSTITUTED β-DIKETONATES OF Al(III), Fe(III), AND Cu(II)

• Published in: Journal of structural chemistry 2020-10, Vol.61 (10), p.1615-1623
• Main Authors: Stabnikov, P. A., Alferova, N. I., Korolkov, I. V., Pervukhina, N. V., Trubin, S. V., Babailov, S. P., Turgambaeva, A. E.
• Format: Article
• Language: English
• Subjects: Atomic; Atomic/Molecular Structure and Spectra; Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Molecular; Optical and Plasma Physics; Physical Chemistry; Solid State Physics
• ISSN: 0022-4766; 1573-8779
• DOI: 10.1134/S0022476620100145

The structures of two Al(III) and Fe(III) β-diketonates with a γ-substituted ligand are studied by single crystal X-ray diffraction at 150(2) K. Crystallographic data for Al(γ-Me-hd) 3 ( I ) are: space group , a  = 10.855(1) Å, b  = 11.129(1) Å, с  = 11.894(1) Å, α = 85.634(3)°, F0200062 = 73.118(3)°, γ = 66.771(3)°, V  = 1262.2(2) Å 3 , Z  = 2, R 1  = 0.0438. For Fe(γ-Me-hd) 3 ( II ): space group P 2 1 / с , a  = 10.0374(5) Å, b  = 17.0798(7) Å, с  = 15.7213(6) Å, F0200062 = 107.459(1)°, V  = 2571.1(2) Å 3 , Z  = 4, R 1  = 0.0364. Compounds I and II are isotypical because their molecules have the same structure but crystallize in different crystal systems. The crystal structures of I and II are molecular and consist of discrete M (γ-Me-hd) 3 ( M  = Al, Fe) molecules. Thermogravimetric studies show that complexes I and II are similarly volatile. For Cu(γ-Me-hd) 2 complex ( III ) the saturated vapor pressure is measured by the Knudsen method in the temperature range 100-150 °C. Sublimation thermodynamic parameters are found and vapor thermolysis is investigated.