A nickel(II) complex with an unsymmetrical tetra-dentate chelating ligand derived from pyridine-2,6-dicarbaldehyde and 2-amino-thio-phenol.

Acta Crystallogr E Crystallogr Commun

Karlsruher Institut für Technologie (KIT), Institut für Anorganische Chemie, Engesserstrasse 15, 76131 Karlsruhe, Germany.

Published: September 2023

AI Article Synopsis

  • The compound discussed is a nickel(II) complex that crystallizes in a specific monoclinic space group, with one molecule in its asymmetric unit.
  • The ligand, which is typically a bis-Schiff base, underwent unexpected modifications, resulting in one part forming a benzo-thiazol-2-yl structure and the other part oxidizing to an amide group instead of remaining as an imine.
  • The nickel atom has a distorted square-planar geometry, and the molecules exhibit strong Ï€-Ï€ stacking interactions, leading to the formation of dimers that further connect into chains through C-H⋯O interactions.

Article Abstract

[(2-{[6-(1,3-Benzo-thia-zol-2-yl)pyridin-2-yl]carbonyl-aza-nid-yl}phen-yl)sulf-anido]nickel(II), [Ni(CHNOS)], crystallizes in the centrosymmetric monoclinic space group 2/ with one mol-ecule in the asymmetric unit. The expected ligand, a bis-Schiff base derived from pyridine-2,6-dicarbaldehyde and 2-amino-thio-phenol, had modified in a both unexpected and unsymmetrical fashion. One arm had cyclized to form a benzo[]thia-zol-2-yl functionality, while the imine linkage of the second arm had oxidized to an amide group. The geometry about the central Ni atom is distorted square-planar NS. The mol-ecules form supra-molecular face-to-face dimers rather strong π-π stacking inter-actions, with these dimers then linked into chains pairwise C-H⋯O inter-actions.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10483564PMC
http://dx.doi.org/10.1107/S2056989023006692DOI Listing

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