Design of metamagnetic layered cobalt(II) coordination polymers with controlled magnetic phase transitions
Abstract
Three coordination compounds of formula [CoCl 2 ( N , N′ )] n [ N , N ' = 4,4′-bipyridine (4,4′-bpy), ( Cobpy ); trans -4,4′-azopyridine ( t -apy), ( Coapy ); and trans -1,2-bis(4-pyridyl)ethylene ( t -bpee), ( Cobpee )] have been prepared using solvothermal procedures. They have been characterized by different techniques, including the ab initio crystal structure determination of Cobpee . The structures of Cobpy and Cobpee are formed by octahedral tran s-CoCl 4 N 2 nodes, which construct rectangular grid layers that are stacked in an ABAB pattern. The three complexes show a similar metamagnetic behavior, which suggests that Coapy displays a layered structure equally built. The magnetic phase transitions of the compounds from an antiferromagnetic state to a paramagnetic-like or ferromagnetic-like state have been analyzed, and magnetic phase diagrams are provided. The use of N , N′ -donor ligands with different lengths allows controlling the strength of the interchain interactions and the critical temperature ( T c ) and critical magnetic field ( H c ) of the metamagnetic phase transitions.
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BibTeX
@article{cortijo2026design,
title = {{Design of metamagnetic layered cobalt(II) coordination polymers with controlled magnetic phase transitions}},
author = {Miguel Cortijo and Isabel Coloma and Santiago Herrero and Reyes Jiménez-Aparicio and Emilio Matesanz},
journal = {Frontiers in Chemistry},
year = {2026},
month = oct,
doi = {10.3389/fchem.2026.1894406},
url = {https://u-bordeaux.hal.science/hal-05836715v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Design of metamagnetic layered cobalt(II) coordination polymers with controlled magnetic phase transitions
AU - Miguel Cortijo
AU - Isabel Coloma
AU - Santiago Herrero
AU - Reyes Jiménez-Aparicio
AU - Emilio Matesanz
PY - 2026
DA - 2026/10/23
JO - Frontiers in Chemistry
DO - 10.3389/fchem.2026.1894406
UR - https://u-bordeaux.hal.science/hal-05836715v1
AB - Three coordination compounds of formula [CoCl 2 ( N , N′ )] n [ N , N ' = 4,4′-bipyridine (4,4′-bpy), ( Cobpy ); trans -4,4′-azopyridine ( t -apy), ( Coapy ); and trans -1,2-bis(4-pyridyl)ethylene ( t -bpee), ( Cobpee )] have been prepared using solvothermal procedures. They have been characterized by different techniques, including the ab initio crystal structure determination of Cobpee . The structures of Cobpy and Cobpee are formed by octahedral tran s-CoCl 4 N 2 nodes, which construct rectangular grid layers that are stacked in an ABAB pattern. The three complexes show a similar metamagnetic behavior, which suggests that Coapy displays a layered structure equally built. The magnetic phase transitions of the compounds from an antiferromagnetic state to a paramagnetic-like or ferromagnetic-like state have been analyzed, and magnetic phase diagrams are provided. The use of N , N′ -donor ligands with different lengths allows controlling the strength of the interchain interactions and the critical temperature ( T c ) and critical magnetic field ( H c ) of the metamagnetic phase transitions.
SN - 2296-2646
ER -