Synthesis, crystal structure and Hirshfeld surface analysis of di-aqua-bis-(o-phenyl-enedi-amine-κ2N, N')nickel(II) naphthalene-1,5-di-sulfonate

Jabbor R Suyunov; Khayit Kh Turaev; Bekmurod Kh Alimnazarov; Yusuf E Nazarov; Islombek J Mengnorov; Bakhtiyar T Ibragimov; Jamshid M Ashurov

doi:10.1107/S2056989023009350

Synthesis, crystal structure and Hirshfeld surface analysis of di-aqua-bis-(o-phenyl-enedi-amine-κ²N, N')nickel(II) naphthalene-1,5-di-sulfonate

Acta Crystallogr E Crystallogr Commun. 2023 Oct 26;79(Pt 11):1083-1087. doi: 10.1107/S2056989023009350. eCollection 2023 Nov 1.

Authors

Jabbor R Suyunov¹, Khayit Kh Turaev¹, Bekmurod Kh Alimnazarov¹, Yusuf E Nazarov¹, Islombek J Mengnorov², Bakhtiyar T Ibragimov², Jamshid M Ashurov²

Affiliations

¹ Termez State University, "Barkamol avlod", at street, 43., Termez city, Uzbekistan.
² Institute of Bioorganic Chemistry, Academy of Sciences of Uzbekistan, 100125, M. Ulugbek Str 83, Tashkent, Uzbekistan.

Abstract

The reaction of o-phenyl-enedi-amine (OPD), sodium naphthalene1,5-di-sulfonate (Na₂NDS) and nickel sulfate in an ethanol-water mixture yielded the title compound, [Ni(OPD)₂(H₂O)₂]·NDS or [Ni(C₆H₈N₂)₂(H₂O)₂](C₁₀H₆O₆S₂). This salt consists of a complex [Ni(OPD)₂(H₂O)₂]²⁺ cation with two bidentate OPD ligands and trans aqua ligands, and a non-coordinating NDS^2- anion, which is the double-deprotonated form of H₂NDS. The Ni^II atom is situated at a center of inversion and exhibits a slightly tetra-gonally distorted {O₂N₄} octa-hedral coordination environment, with four shorter equatorial Ni-N bonds [2.0775 (17) and 2.0924 (18) Å] and a longer axial Ni-O bond [2.1381 (17) Å]. The OPD ligand is located about an inversion center and is nearly coplanar with the NiN₄ plane [dihedral angle 0.95 (9)°]. In the crystal, the cations and anions are connected by charge-assisted inter-molecular N-H⋯O and O-H⋯O hydrogen-bonding inter-actions into the tri-periodic network structure. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (44.1%), O⋯H/H⋯O (34.3%), C⋯H/H⋯C (14.8%) C⋯C (6.5%) (involving the cations) and O⋯H/H⋯O (50%), H⋯H (25%), C⋯H/H⋯C (15.3%), C⋯C (8.2%) (involving the anions) inter-actions.

Keywords: 1,5-naphthalenedisulfonic acid; Hirshfeld surface; crystal structure; hydrogen bonding; intermolecular interactions; o-Phenylenediamine.

Grants and funding

The authors thank the Uzbekistan government for direct financial support of this research. A Grant for Fundamental Research from the Center of Science and Technology of Uzbekistan is gratefully acknowledged.