From Achiral Precursors to Copper Helical Coordination Polymers: Magnetic Properties and Electronic Structure

Francisco Rubio-Sepúlveda, Sofía Huechucura, Carlos Cruz, Abdul M. Reyes, Sebastian E. Reyes-Lillo, Javier Campo, Diego Venegas-Yazigi, Verónica Paredes-García

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

1 Cita (Scopus)

Resumen

We introduce two novel one-dimensional coordination polymers (CPs) with helical arrangements based on copper(II) and an achiral Schiff base ligand, [Cu(L)(DMF)(X)]n (X = NO3- (1) and Cl- (2)), where L = 2-{[(pyridin-3-yl)imino]methyl}phenol. Both structures crystallize in an orthorhombic unit cell with a P212121 space group. In both compounds, unconventional noncovalent interactions are fundamental for the structural features, modulating the dihedral angle ca. 70° between the two aromatic rings that are part of the organic ligand. Magnetic measurements indicate that weak antiferromagnetic interactions predominate in both CPs, with a J value of −3.34 cm-1 for 1 and −4.95 cm-1 for 2, corroborated by ab initio first-principles calculations. Furthermore, electronic structure analyses reveal a semiconductor behavior for both CPs. First-principles calculations predict small polaron localization around the Cu sites, with a higher formation of electron polarons in compound 1 than in 2.

Idioma originalInglés
Páginas (desde-hasta)7002-7014
Número de páginas13
PublicaciónCrystal Growth and Design
Volumen24
N.º17
DOI
EstadoPublicada - 4 sep. 2024

Áreas temáticas de ASJC Scopus

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

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