European Journal of Chemistry 2019, 10(3), 195-200 | doi: | Get rights and content


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

Emmanuel Ngwang Nfor (1,*) orcid , Andrew David Burrows (2) orcid , Bridget Ndoye Ndosiri (3) orcid , Luke Lawrence Keenan (4) orcid , Offiong Efanga Offiong (5) orcid

(1) Department of Chemistry, Faculty of Science, University of Buea, Buea, Cameroon
(2) Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
(3) Inorganic Chemistry Department, Faculty of Science, University of Yaounde 1, Yaounde, Cameroon
(4) Diamond Light Source, Didcot, Oxfordshire, OX11 0DE, United Kingdom
(5) Department of Pure and Applied Chemistry, University of Calabar, PMB 1115, Calabar, CRS, Nigeria
(*) Corresponding Author

Received: 06 May 2019 | Revised: 10 Jun 2019 | Accepted: 14 Jun 2019 | Published: 30 Sep 2019 | Issue Date: September 2019


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)°, = 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).


Copper; Pyrazine; Hydrogen sorption; X-ray crystallography; Single crystal structure; Metal-organic framework

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DOI: 10.5155/eurjchem.10.3.195-200.1888

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Commonwealth Scholarship Commission (CSC) for Research Fellowship and Department of Chemistry, University of Bath, United Kingdom.


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How to cite

Nfor, E.; Burrows, A.; Ndosiri, B.; Keenan, L.; Offiong, O. Eur. J. Chem. 2019, 10(3), 195-200. doi:10.5155/eurjchem.10.3.195-200.1888
Nfor, E.; Burrows, A.; Ndosiri, B.; Keenan, L.; Offiong, O. Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework. Eur. J. Chem. 2019, 10(3), 195-200. doi:10.5155/eurjchem.10.3.195-200.1888
Nfor, E., Burrows, A., Ndosiri, B., Keenan, L., & Offiong, O. (2019). Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework. European Journal of Chemistry, 10(3), 195-200. doi:10.5155/eurjchem.10.3.195-200.1888
Nfor, Emmanuel, Andrew David Burrows, Bridget Ndoye Ndosiri, Luke Lawrence Keenan, & Offiong Efanga Offiong. "Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework." European Journal of Chemistry [Online], 10.3 (2019): 195-200. Web. 9 Aug. 2020
Nfor, Emmanuel, Burrows, Andrew, Ndosiri, Bridget, Keenan, Luke, AND Offiong, Offiong. "Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework" European Journal of Chemistry [Online], Volume 10 Number 3 (30 September 2019)

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