Crystal structure and Hirshfeld analysis of trans -bis-(5-fluoro-indoline-2,3-dione 3-oximato-κ2O2 ,N3 )-trans -bis-(pyridine-κN )copper(II)

Acta Crystallographica. Section E, Crystallographic Communications
Ana Paula Lopes de MeloAdriano Bof de Oliveira

Abstract

The reaction in methanol of CuII acetate monohydrate with 5-fluoro-isatin 3-oxime deprotonated with KOH in a 1:2 molar ratio and recrystallization from pyridine yielded the title compound, [Cu(C8H4FN2O2)2(C5H5N)2]. In the centrosymmetric complex, the anionic form of the isatin oxime acts as a κ2N,O donor, building five-membered metallarings. The CuII cation is sixfold coordinated in a slightly distorted octa-hedral environment by two trans, equatorial, anionic isatin derivatives and two trans pyridine ligands in axial positions. The complexes are linked by hydrogen bonding into a three-dimensional network, which is also stabilized by π-π stacking inter-actions [centroid-to-centroid distance = 3.7352 (9) Å] and C-H⋯π contacts. The Hirshfeld surface analysis indicates that the major contributions for the crystal packing are H⋯H (31.80%), H⋯C (24.30%), H⋯O (15.20%) and H⋯F (10.80%). This work is the second report in the literature of a crystal structure of a coordination compound with isatin 3-oxime ligands (coordination chemistry).

References

Jul 15, 2011·Acta Crystallographica. Section E, Structure Reports Online·Bianca Barreto MartinsAdriano Bof de Oliveira
Dec 30, 2014·Acta Crystallographica. Section A, Foundations and Advances·George M Sheldrick
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Jun 20, 2015·Journal of Applied Crystallography·Lennard KrauseDietmar Stalke
Oct 22, 2016·Journal of Enzyme Inhibition and Medicinal Chemistry·Rita MeledduElias Maccioni
Aug 5, 2017·Acta Crystallographica. Section E, Crystallographic Communications·Bianca Barreto MartinsVanessa Carratu Gervini

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