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. 2024 Jan 12;80(Pt 2):133-136.
doi: 10.1107/S2056989023011040. eCollection 2024 Feb 1.

Crystal structure of poly[hexa-μ-bro-mido-bis{2-[1-(py-ri-din-2-yl)ethyl-idene-amino]ethanol-ato}tetracopper(II)]

Bocar Traoré  1 , Ngoné Diouf  1 , Momath Kébé  1 , Rokhaya Guéye-Sylla  1 , Ibrahima Elhadji Thiam  1 , Ousmane Diouf  1 , Pascal Retailleau  2 , Mohamed Gaye  1
Affiliations

Crystal structure of poly[hexa-μ-bro-mido-bis{2-[1-(py-ri-din-2-yl)ethyl-idene-amino]ethanol-ato}tetracopper(II)]

Bocar Traoré et al. Acta Crystallogr E Crystallogr Commun. .

Abstract

The reaction of the Schiff base 2-[1-(pyridin-2-yl)ethyl-idene-amino]-ethanol (HL), which is formed by reaction of 2-amino-ethanol and 2-acetyl-pyridine with CuBr2 in ethanol results in the isolation of the new polymeric complex poly[hexa-μ-bromido-bis-{2-[1-(pyridin-2-yl)ethyl-idene-amino]-ethano-lato}tetra-copper(II)], [Cu4Br6(C9H11N2O)2]n or [Cu4Br6 L 2]n. The asymmetric unit of the crystal structure of the polymeric [Cu4Br6 L 2]n complex is composed by four copper (II) cations, two monodeprotonated mol-ecules of the ligand, and six bromide anions, which act as bridges. The ligand mol-ecules act in a tridentate fashion through their azomethine nitro-gen atoms, their pyridine nitro-gen atoms, and their alcoholate O atoms. The crystal structure shows two types of geometries in the coordination polyhedrons around Cu2+ ions. Two copper cations are situated in a square-based pyramidal environment, while the two other copper cations adopt a tetra-hedral geometry. Bromides anions acting as bridges between two metal ions connect the units, resulting in a tetra-nuclear polymer compound.

Keywords: 2-(1-((2-hyroxyeth­yl)imino)­acetyl­pyridine); 2-amino­ethanol; acetyl­pyridine; crystal structure; square pyramidal; tetra­hedral.

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Figures

Figure 1
Figure 1
A view of the title compound, showing the atom-labeling scheme. Displacement ellipsoids are plotted at the 30% probability level.
Figure 2
Figure 2
Fragment of a [010] polymeric chain in the crystal structure of the title compound.
Figure 3
Figure 3
The packing in the crystal of the title complex, viewed along the c axis.
See this image and copyright information in PMC

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