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


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

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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, Accepted Manuscript
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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. Enyashin, I. F. Berger and V. G. Zubkov, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE00309B

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