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AfCA collection

Celebrating work published by African researchers in IUCr journals

Edited by Susan Bourne, Delia Haynes and Michele Zema

To commemorate the founding of the African Crystallographic Association and also to mark the 75th anniversary of the IUCr, we are publishing a special collection of articles from African researchers, which will provide a valuable and visible endorsement of the development of crystallography in Africa.

research articles

Synthesis and crystal structures of two 1H-benzo[d]imidazole derivatives: DFT and anticorrosion studies, and Hirshfeld surface analysis

N. Ghichi, A. Djedouani, D. Hannachid, M. E. Said, A. Benboudiaf, H. Merazig, L. Ouksel, A. Hellal and H. Stoeckli-Evans

The title benzimidazole compounds were synthesized by the condensation reaction of benzene-1,2-diamine with 4-methoxynaphthalene-1-carbaldehyde in the ratios 1:1 and 1:2, respectively. Both compounds exhibit significant anticorrosion properties with respect to iron and copper.

CCDC references: 1995360; 1995359

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The synthesis and crystal structure of (E)-2-{[(4-methoxynaphthalen-1-yl)methylidene]amino}-4-methylphenol: Hirshfeld surface analysis, DFT calculations and anticorrosion studies

A. A. Yahiaoui, N. Ghichi, D. Hannachi, B. Mezhoud, A. Djedouani, K. Kraim, A. Crochet and H. Stoeckli-Evans

The title Schiff base was synthesized by the reaction of 2-amino-4-methylphenol with 4-methoxynaphthalene-1-carbaldehyde in a 1:1 ratio. The compound exhibits significant anticorrosion properties for iron and copper.

CCDC reference: 2279139

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Crystal structure and Hirshfeld surface analysis of 1-[(E)-2-(3-nitrophenyl)diazen-1-yl]naphthalen-2-ol

M. A. Benaouida, A. Benosmane, M. Boutebdja and H. Merazig

The hydrazone form is the predominant form in the solid state. The naphthol and benzene fragments attached to the –N=N– moiety adopt the s-trans conformation. There are only two types of intermolecular interactions in the crystal structure: strong hydrogen-bonding C—H⋯O interactions and π–π stacking interactions.

CCDC reference: 2239846

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Synthesis and crystal structure of N-(5-acetyl-4-methylpyrimidin-2-yl)benzenesulfonamide

R. A. Mohamed-Ezzat, B. M. Kariuki and R. A. Azzam

N-(5-Acetyl-4-methylpyrimidin-2-yl)benzenesulfonamide was synthesized and structurally characterized. In the crystal, π–π interactions between the phenyl and pyrimidine groups of neighbouring molecules form molecular chains parallel to [010]. Adjacent chains are linked by N—H⋯N hydrogen-bonding interactions, resulting in a three-dimensional network.

CCDC reference: 2245275

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Synthesis and crystal structures of (E)-N′-(4-chloro-3-nitrobenzylidene)acetohydrazide and (E)-2-(4-chlorobenzylidene)-1-(quinolin-8-yl)hydrazine

T. Nasr, B. M. Kariuki, M. M. Elansary, R. Elhaggar and W. Zaghary

Two benzylidenehydrazinederivatives have been synthesized and structurally characterized.

CCDC references: 2235324; 2235323

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6,8-Dichloro-3-(pyridin-2-yl)-2-[1-(pyridin-2-yl)ethyl]-1,2-dihydroquinoxaline

F. P. Malan, A. M. Mansour and A.-L.E. Manicum

The synthesis and single-crystal X-ray structure of a substituted quinoxaline compound is described.

CCDC reference: 2285764

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issue contents

AfCA collection

Celebrating work published by African researchers in IUCr journalsEdited by Susan Bourne, Delia Haynes and Michele Zema

research articles

Synthesis and crystal structures of two 1H-benzo[d]­imidazole derivatives: DFT and anti­corrosion studies, and Hirshfeld surface analysis

The synthesis and crystal structure of (E)-2-{[(4-meth­oxy­naph­tha­len-1-yl)methyl­idene]amino}-4-methyl­phenol: Hirshfeld surface analysis, DFT calculations and anti­corrosion studies

Crystal structure and Hirshfeld surface analysis of 1-[(E)-2-(3-nitro­phen­yl)diazen-1-yl]naphthalen-2-ol

Synthesis and crystal structure of N-(5-acetyl-4-methyl­pyrimidin-2-yl)benzene­sulfonamide

Synthesis and crystal structures of (E)-N′-(4-chloro-3-nitro­benzyl­idene)acetohydrazide and (E)-2-(4-chloro­benzyl­idene)-1-(quinolin-8-yl)hydrazine

6,8-Di­chloro-3-(pyridin-2-yl)-2-[1-(pyridin-2-yl)eth­yl]-1,2-di­hydro­quinoxaline

Explore

News and jobs

Celebrating work published by African researchers in IUCr journals

Edited by Susan Bourne, Delia Haynes and Michele Zema

Synthesis and crystal structures of two 1H-benzo[d]imidazole derivatives: DFT and anticorrosion studies, and Hirshfeld surface analysis

The synthesis and crystal structure of (E)-2-{[(4-methoxynaphthalen-1-yl)methylidene]amino}-4-methylphenol: Hirshfeld surface analysis, DFT calculations and anticorrosion studies

Crystal structure and Hirshfeld surface analysis of 1-[(E)-2-(3-nitrophenyl)diazen-1-yl]naphthalen-2-ol

Synthesis and crystal structure of N-(5-acetyl-4-methylpyrimidin-2-yl)benzenesulfonamide

Synthesis and crystal structures of (E)-N′-(4-chloro-3-nitrobenzylidene)acetohydrazide and (E)-2-(4-chlorobenzylidene)-1-(quinolin-8-yl)hydrazine

6,8-Dichloro-3-(pyridin-2-yl)-2-[1-(pyridin-2-yl)ethyl]-1,2-dihydroquinoxaline