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oai:ojs.www.eurjchem.com:article/1888 2019-12-31T03:23:22Z eurjchem:ART driver

Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework Nfor, Emmanuel Ngwang Burrows, Andrew David Ndosiri, Bridget Ndoye Keenan, Luke Lawrence Offiong, Offiong Efanga Copper Pyrazine Hydrogen sorption X-ray crystallography Single crystal structure Metal-organic framework A new copper(I) pyrazine-bridged coordination polymer [Cu2(pyz)3(NO3)2]·2DMF] (pyz = pyrazine) (1) has been synthesized and characterized by FT-IR, TG/DTG, DSC and single crystal X-ray diffraction techniques. The X-ray crystallographic result reveals a two-dimensional network structure containing hexagonal pores. Thermal analysis of compound 1 reveals it is stable to 380 °C, and gas sorption studies showed that it adsorbs 1.04 wt% hydrogen at 1 atm and 77 K. Compound 1 crystallizes in a triclinic system, space group P-1 (no. 2), a = 7.9550(2) Å, b = 7.9810(2) Å, c = 11.0660(3) Å, α = 76.328(1)°, β = 71.115(1)°, γ = 84.577(1)°, V = 645.79(3) Å3, Z = 2, T = 150(2) K, μ(MoKα) = 1.709 mm-1, Dcalc = 1.639 g/cm3, 11111 reflections measured (7° ≤ 2Θ ≤ 54.96°), 2951 unique (Rint = 0.0539) which were used in all calculations. The final R1 was 0.0346 (>2σ(I)) and wR2 was 0.0727 (all data). Atlanta Publishing House LLC 2019-09-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/x-fortran https://www.eurjchem.com/index.php/eurjchem/article/view/1888 10.5155/eurjchem.10.3.195-200.1888 European Journal of Chemistry; Vol. 10 No. 3 (2019): September 2019; 195-200 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1888/pdf_1888 https://www.eurjchem.com/index.php/eurjchem/article/view/1888/2638 Copyright (c) 2019 Authors