Structural, optical and magnetic properties of a new metal-organic Co II -based complex.

Autor: Jabeur W; Laboratory Physico Chemistry of the Solid State, Department of Chemistry, Faculty of Sciences of Sfax, Sfax University POBOX 1171 3000 Sfax Tunisia houcine_naili@yahoo.com., Korb M; The University of Western Australia, School of Molecular Sciences 35 Stirling Highway, Crawley Perth Western Australia 6009 Australia., Hamdi M; Department of Chemistry, College of Sciences and Arts Turaif, Northern Border University Arar Saudi Arabia marwan.shalash@nbu.edu.sa Mohamed.Hamdi@nbu.edu.sa., Holub M; Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice SK-041 54 Košice Slovakia., Princík D; Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Košice SK-041 54 Slovakia., Zeleňák V; Department of Inorganic Chemistry, Faculty of Science, P. J. Šafárik University Košice SK-041 54 Slovakia., Sanchez-Coronilla A; Departamento de Química Física, Facultad de Farmacia, Universidad de Sevilla E-41012 Sevilla Spain., Shalash M; Department of Chemistry, College of Sciences and Arts Turaif, Northern Border University Arar Saudi Arabia marwan.shalash@nbu.edu.sa Mohamed.Hamdi@nbu.edu.sa., Čižmár E; Institute of Physics, Faculty of Science, P. J. Šafárik University in Košice SK-041 54 Košice Slovakia., Naïli H; Laboratory Physico Chemistry of the Solid State, Department of Chemistry, Faculty of Sciences of Sfax, Sfax University POBOX 1171 3000 Sfax Tunisia houcine_naili@yahoo.com.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Aug 12; Vol. 14 (34), pp. 25048-25061. Date of Electronic Publication: 2024 Aug 12 (Print Publication: 2024).
DOI: 10.1039/d4ra02149e
Abstrakt: A mononuclear cobalt(ii) complex [C 5 H 8 N 3 ] 2 [CoCl 4 (C 5 H 7 N 3 ) 2 ] (I) was synthesized and structurally characterized. Single crystal X-ray diffraction analysis indicates that monometallic Co(ii) ions acted as coordination nodes in a distorted octahedral geometry, giving rise to a supramolecular architecture. The latter is made up of a ½ unit form composed of an anionic element [Co 0.5 Cl 2 (C 5 H 7 N 3 )] - and one 2-amino-4-methylpyrimidinium cation [C 5 H 8 N 3 ] + . The crystalline arrangement of this compound adopts the sandwich form where inorganic parts are sandwiched between the organic sheets following the [100] direction. More information regarding the structure hierarchy has been supplied based on Hirshfeld surface analysis; the X⋯H (X = N, Cl) interactions play a crucial role in stabilizing the self-assembly process of I, complemented by the intervention of π⋯π electrostatic interaction created between organic entities. Thermal analyses were carried out to study the thermal behavior process. Static magnetic measurements and ab initio calculations of compound I revealed the easy-axis anisotropy character of the central Co(ii) ion. Two-channel field-induced slow-magnetic relaxation was observed; the high-frequency channel is characterized by underbarrier relaxation with U eff = 16.5 cm -1 , and the low-frequency channel involves a direct relaxation process affected by the phonon-bottleneck effect.
Competing Interests: The authors declare no conflict of interest.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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