Temperature dependent structure formation and photoluminescence studies of a series of magnesium-based coordination networks
- Temperature dependent structure formation and photoluminescence studies of a series of magnesium-based coordination networks
- P. J. Calderone; D. Banerjee; A. M. Plonka; 김선진; J. B. Parise
- Magnesium-based; DMF; Coordination networks; Magnesium; Photoluminescence; Trimesate; MOF; Crystal structure
- Issue Date
- Inorganica chimica acta
- VOL 394, 452-458
- A series of three magnesium trimesate coordination networks was synthesized from identical reaction mixtures by varying synthetic temperature. Mg(HBTC)(DMF)2·[(CH3)2NH] (1; BTC = trimesate; space group P63/m, a = 16.596(4) Å, c = 14.351(8) Å) crystallizes at 65 °C, Mg3(BTC)(HCOO)3(DMF)3 (2; space group 3, a = 13.928(2) Å, c = 8.025(6) Å) crystallizes at 100 °C, and Mg3(BTC)2(DMF)4 (3; space group P21/c, a = 17.490(4) Å, b = 11.940(2) Å, c = 18.460(4) Å, β = 116.87(3)°) crystallizes at a temperature of 180 °C. Each network contains metal-coordinated solvent DMF molecules, but thermodynamics and solvent hydrolysis play major roles in structure formation. Compounds 1 and 2 are two-dimensional networks which incorporate hydrolysis byproducts. Compound 3 is a three-dimensional network and shows no inclusion of byproducts. The series follows the trend of increased network connectivity resulting from increased temperature. Each of the networks show a weak photoluminescence response, suggesting that coordinated solvent molecules and interlayer species play a role in quenching photoluminescence.
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