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Issue 19, 2018
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Synthesis, crystal structure and optical properties of Me(OH)(HCOO)2 (Me = Al, Ga)

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Abstract

The formation conditions, crystal structure and luminescence properties of aluminum and gallium hydroxide diformates, Me(OH)(HCOO)2, have been established. Both compounds crystallize in a monoclinic lattice (space group C2, #5 and Z = 8) with parameters: a = 8.8629(2) Å, b = 9.9890(2) Å, c = 10.2411(1) Å, β = 106.223(1)°, and V = 870.56(3) Å3 (Al) and a = 8.8746(1) Å, b = 10.3291(1) Å, c = 10.27870(9) Å, β = 105.7565(6)°, and V = 906.81(2) Å3 (Ga). The emission spectra of Me(OH)(HCOO)2 under UV excitation with wavelength λ = 285 nm exhibit maxima in the range of 440–470 nm. The emission accompanied by light-blue luminescence is greatly enhanced when going from the aluminum to the gallium compound. The origin of intrinsic emission centers responsible for the luminescence properties of Me(OH)(HCOO)2 is suggested and the higher emission of the gallium hydroxide diformate is substantiated by means of density-functional theory calculations.

Graphical abstract: Synthesis, crystal structure and optical properties of Me(OH)(HCOO)2 (Me = Al, Ga)

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Publication details

The article was received on 26 Feb 2018, accepted on 14 Apr 2018 and first published on 16 Apr 2018


Article type: Paper
DOI: 10.1039/C8CE00309B
Citation: CrystEngComm, 2018,20, 2741-2748
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    Synthesis, crystal structure and optical properties of Me(OH)(HCOO)2 (Me = Al, Ga)

    V. N. Krasil'nikov, A. P. Tyutyunnik, I. V. Baklanova, A. N. Enyashin, I. F. Berger and V. G. Zubkov, CrystEngComm, 2018, 20, 2741
    DOI: 10.1039/C8CE00309B

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