Field induced slow magnetic relaxation in a zig-zag chain-like Dy(iii) complex with the ligando-phenylenedioxydiacetato

Cernak, J. ; Harcarova, K. ; Falvello, L.R. (Universidad de Zaragoza) ; Dlhan, L. ; Titis, J. ; Boca, R.

Resumen: The new complex [Dy(PDOA)(NO3)(H2O)(2)](n)center dot nH(2)O (1) (H(2)PDOA iso-phenylenedioxydiacetic acid) was isolated from the reaction of dysprosium(iii) nitrate and H(2)PDOA in a 1 : 1 molar ratio. Its crystal structure is formed of neutral zig-zag chains in which the nona-coordinated Dy(iii) atoms (O(9)donor set) are linked by PDOA ligands with a chelating-bridging coordination mode. DC and AC magnetic studies revealed that1behaves as a field-induced SMM with three relaxation channels. The derived values, considering the Orbach relaxation process, of the barrier to spin reversal and the extrapolated relaxation time areU/k(B)= 59.5 K and tau(0)= 6.3 x 10(-10)s, respectively.Ab initiocalculations support the experimental results.

Idioma: Inglés

DOI: 10.1039/d0nj02276d

Año: 2020

Publicado en: NEW JOURNAL OF CHEMISTRY 44, 31 (2020), 13458-13465
ISSN: 1144-0546

Factor impacto JCR: 3.591 (2020)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 75 / 178 = 0.421 (2020) - Q2 - T2

Factor impacto SCIMAGO: 0.692 - Catalysis (Q1) - Materials Chemistry (Q1) - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E11-20R
Financiación: info:eu-repo/grantAgreement/ES/DGA/M4
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/PGC2018-093451-B-I00

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)