One-Dimensional CoIIand NiIIHelical Coordination Polymers Exhibiting Zero-Field Splitting

Ana Karina Seguin, Carlos Cruz, Katherine Villafuerte, Dayán Páez-Hernández, Diego Venegas-Yazigi, Verónica Paredes-García

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

4 Citas (Scopus)

Resumen

Two new coordination polymers {[MII(HL)(EtOH)2](ClO4)}n, where MII= Co (1) and Ni (2), were synthesized using a Schiff base ligand H2L = 2-{[(E)-1H-imidazol-4-ylmethylidene}amino]benzoic acid. Compounds 1 and 2 are isostructural, presenting a one-dimensional helical chain arrangement. Each metal center has a distorted octahedral geometry bridged by a syn-anti carboxylate group. The fitting of the magnetic susceptibility data in the 1.8-300 K range shows weak intrachain antiferromagnetic interaction for 1 and weak ferromagnetic interaction for 2, with the presence of zero-field splitting (zfs) phenomenon in both compounds. Theoretical calculations confirm the weak intrachain coupling in both compounds, but with a zfs phenomenon dominant at lower temperatures. A positive value for the zfs is also obtained, with a major spin-orbit coupling component.

Idioma originalInglés
PublicaciónCrystal Growth and Design
DOI
EstadoEn prensa - 2022

Áreas temáticas de ASJC Scopus

  • Química General
  • Ciencia de los Materiales General
  • Física de la materia condensada

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