Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework

• DOI: 10.5155/eurjchem.10.3.195-200.1888
• Publication Date: 2019-09-30T02:55:26Z
• Authors: Emmanuel Ngwang Nfor; Andrew David Burrows; Bridget Ndoye Ndo...; Luke Lawrence Keenan; Offiong Efanga Of...
• Keywords: Pyrazine; Triclinic crystal system; Coordination polymer

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 single crystal X-ray diffraction techniques. The crystallographic result reveals a two-dimensional network structure containing hexagonal pores. Thermal analysis of compound 1 it is stable to 380 °C, gas sorption studies showed that adsorbs 1.04 wt% hydrogen at atm 77 K. Compound crystallizes in triclinic system, space group P-1 (no. 2), 7.9550(2) Å, b 7.9810(2) c 11.0660(3) 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 all calculations. final R1 was 0.0346 (>2σ(I)) wR2 0.0727 (all data).