Synthesis, crystal structure and Hirshfeld surface analysis of bis-{2-[(pyridin-2-yl)amino]-pyridinium} tetra-cyano-nickelate(II)

Zouaoui Setifi; Hela Ferjani; Fatima Setifi; Safa Ezzine; Mohammed Hadi Al-Douh

doi:10.1107/S205698902001419X

Synthesis, crystal structure and Hirshfeld surface analysis of bis-{2-[(pyridin-2-yl)amino]-pyridinium} tetra-cyano-nickelate(II)

Acta Crystallogr E Crystallogr Commun. 2020 Oct 30;76(Pt 11):1794-1798. doi: 10.1107/S205698902001419X. eCollection 2020 Nov 1.

Authors

Zouaoui Setifi^{1

2}, Hela Ferjani³, Fatima Setifi¹, Safa Ezzine⁴, Mohammed Hadi Al-Douh⁵

Affiliations

¹ Laboratoire de Chimie, Ingénierie Moléculaire et Nanostructures (LCIMN), Université Ferhat Abbas Sétif 1, Sétif 19000, Algeria.
² Département de Technologie, Faculté de Technologie, Université 20 Août 1955-Skikda, BP 26, Route d'El-Hadaiek, Skikda 21000, Algeria.
³ Chemistry Department, College of Science, IMSIU (Imam Mohammad Ibn Saud Islamic University), Riyadh 11623, Kingdom of Saudi Arabia.
⁴ Department of Chemistry, College of Sciences, King Khalid University, Abha, Saudi Arabia.
⁵ Chemistry Department, Faculty of Science, Hadhramout University, Mukalla, Hadhramout, Yemen.

Abstract

In the title mol-ecular salt, (C₁₀H₁₀N₃)₂[Ni(CN)₄], the dihedral angle between the pyridine rings in the cation is 1.92 (13)° and the complete anion is generated by a crystallographic centre of symmetry. An intra-molecular N-H⋯N hydrogen bond occurs in the cation, which closes an S(6) ring. In the crystal, the components are linked by N-H⋯N and weak C-H⋯N hydrogen bonds, which generate chains propagating in the [101] direction. Weak aromatic π-π stacking inter-actions are also observed. A Hirshfeld surface analysis and two-dimensional fingerprint plots indicate that the most important contact types in the crystal packing are N⋯H/H⋯N, C⋯H/H⋯C and H⋯H with contributions of 37.2, 28.3 and 21.9%, respectively.

Keywords: Hirshfeld surface analysis; N-(pyridin-2-yl)pyridinium-2-amine; crystal structure; hydrogen bonding; tetracyanonickelate.

Grants and funding

This work was funded by Ministère de l’Enseignement Supérieur et de la Recherche Scientifique Algeria grant . Direction Générale de la Recherche Scientifique et du Développement Technologique Algeria grant . Université Ferhat Abbas Sétif 1 grant .