TY - JOUR

T1 - Metal-organic frameworks based on magnesium(ii)

T2 - adsorption and luminescence properties

AU - Lysova, A. A.

AU - Samsonenko, D. G.

AU - Kovalenko, K. A.

AU - Dybtsev, D. N.

AU - Fedin, V. P.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Two new metal-organic frameworks based on magnesium(ii) ions, [Mg4(bdc)3(dma)6(NO3)2]•DMA (1; bdc is 1,4-benzenedicarboxylate; dma, DMA is N,N-dimethylacetamide) and [Mg3(bpdc)3(nmp)4] (2; bpdc is 4,4´-biphenyldicarboxylate; nmp is N-methylpyrrolidone), were synthesized in DMA or NMP, respectively. According to the single-crystal X-ray diffraction data, compound 1 is built of binuclear carboxylate units {Mg2(O2CR)3}, which were previously not observed in metal-organic frameworks. Compound 2 is based on trinuclear carb oxylate units {Mg3(O2CR)6}. Compound 1 has a layered structure (hcb topology), whereas compound 2 has a distorted three-dimensional cubic structure (pcu topology). The phase purity and chemical identity of the compounds were confirmed by IR spectroscopy, thermogravimetry, elemental analysis, and powder X-ray diffraction. Photoluminescence properties of both compounds are indicative of intraligand charge-transfer transitions of one (for 1) or two (for 2) types. Textural characteristics of an activated sample of 1 were measured by nitrogen and hydrogen adsorption at 77 K and by carbon dioxide adsorption at 195 K.

AB - Two new metal-organic frameworks based on magnesium(ii) ions, [Mg4(bdc)3(dma)6(NO3)2]•DMA (1; bdc is 1,4-benzenedicarboxylate; dma, DMA is N,N-dimethylacetamide) and [Mg3(bpdc)3(nmp)4] (2; bpdc is 4,4´-biphenyldicarboxylate; nmp is N-methylpyrrolidone), were synthesized in DMA or NMP, respectively. According to the single-crystal X-ray diffraction data, compound 1 is built of binuclear carboxylate units {Mg2(O2CR)3}, which were previously not observed in metal-organic frameworks. Compound 2 is based on trinuclear carb oxylate units {Mg3(O2CR)6}. Compound 1 has a layered structure (hcb topology), whereas compound 2 has a distorted three-dimensional cubic structure (pcu topology). The phase purity and chemical identity of the compounds were confirmed by IR spectroscopy, thermogravimetry, elemental analysis, and powder X-ray diffraction. Photoluminescence properties of both compounds are indicative of intraligand charge-transfer transitions of one (for 1) or two (for 2) types. Textural characteristics of an activated sample of 1 were measured by nitrogen and hydrogen adsorption at 77 K and by carbon dioxide adsorption at 195 K.

KW - adsorption

KW - luminescence

KW - magnesium

KW - metal-organic frameworks

KW - X-ray diffraction

KW - POROUS COORDINATION POLYMERS

KW - SORPTION

KW - BINDING

UR - http://www.scopus.com/inward/record.url?scp=85066146921&partnerID=8YFLogxK

U2 - 10.1007/s11172-019-2487-2

DO - 10.1007/s11172-019-2487-2

M3 - Article

AN - SCOPUS:85066146921

VL - 68

SP - 793

EP - 801

JO - Russian Chemical Bulletin

JF - Russian Chemical Bulletin

SN - 1066-5285

IS - 4

ER -