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Metamagnetism and canted antiferromagnetic ordering in two monomeric CoII complexes with 1-(2-pyrimidyl)piperazine. Hirshfeld surface analysis and theoretical studies.

ABSTRACT: Here we present the magnetic properties of two cobalt complexes formulated as: [Co(SCN)2(L)2] (1) and (H2L)2[Co(SCN)4]·H2O (2) (L = 1-(2-pyrimidyl)piperazine). The two compounds contain isolated tetrahedral CoII complexes with important intermolecular interactions that lead to the presence of a canted antiferromagnetic order below 11.5 and 10.0 K, with coercive fields at 2 K of 38 and 68 mT, respectively. Theoretical calculations have been used to explain this behaviour. Hirshfeld surface analysis shows the presence of strong intermolecular interactions in both compounds. The crystal geometries were used for geometry optimization using the DFT method. From the topological properties, electrostatic potential maps and molecular orbital analysis, information about the noncovalent interaction and chemical reactivity was obtained.

SUBMITTER: Hannachi A 

PROVIDER: S-EPMC11004733 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature

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Metamagnetism and canted antiferromagnetic ordering in two monomeric Co<sup>II</sup> complexes with 1-(2-pyrimidyl)piperazine. Hirshfeld surface analysis and theoretical studies.

Hannachi Anissa A   El Bakri Youness Y   Saravanan Kandasamy K   Gómez-García Carlos J CJ   Abuelizz Hatem A HA   Al-Salahi Rashad R   Smirani Wajda W  

RSC advances 20240410 16

Here we present the magnetic properties of two cobalt complexes formulated as: [Co(SCN)<sub>2</sub>(L)<sub>2</sub>] (1) and (H<sub>2</sub>L)<sub>2</sub>[Co(SCN)<sub>4</sub>]·H<sub>2</sub>O (2) (L = 1-(2-pyrimidyl)piperazine). The two compounds contain isolated tetrahedral Co<sup>II</sup> complexes with important intermolecular interactions that lead to the presence of a canted antiferromagnetic order below 11.5 and 10.0 K, with coercive fields at 2 K of 38 and 68 mT, respectively. Theoretical ca  ...[more]

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