Syntheses, Structures, and Magnetic Properties of a Series of Heterotri-, Tetra- and Pentanuclear Ln(III)–Co(II) Compounds

Three types of Ln(III)–Co(II) heterometallic compounds, LnCo(2)(L1)(7)(bipy)(2) (Ln = Pr-1, Eu-2, Sm-3, Gd-4, Tb-5, Dy-6) (L1 = 4-chlorobenzoate, bipy = 2,2′-bipyridine), Ln(2)Co(2)(L(2))(10)(bipy)(2) (Ln = Sm-7, Gd-8, Tb-9, Dy-10, Ho-11, Er-12, Yb-13), (L2 = 2,4-dichlorobenzoate, bipy = 2,2′-bipyri...

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Detalles Bibliográficos
Autores principales: Xu, Yun, Luo, Feng, Zheng, Ji-Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6418803/
https://www.ncbi.nlm.nih.gov/pubmed/30960180
http://dx.doi.org/10.3390/polym11020196
Descripción
Sumario:Three types of Ln(III)–Co(II) heterometallic compounds, LnCo(2)(L1)(7)(bipy)(2) (Ln = Pr-1, Eu-2, Sm-3, Gd-4, Tb-5, Dy-6) (L1 = 4-chlorobenzoate, bipy = 2,2′-bipyridine), Ln(2)Co(2)(L(2))(10)(bipy)(2) (Ln = Sm-7, Gd-8, Tb-9, Dy-10, Ho-11, Er-12, Yb-13), (L2 = 2,4-dichlorobenzoate, bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline), and Ln(2)Co(3)(L1)(12)(bipy)(2) (Ln = Ho-14, Er-15, Yb-16), were synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction, IR spectroscopy and magnetic measurements. Structural analyses revealed that 14–16 take on a unique linear pentanuclear structural motif. Interestingly, the Ho-containing compound 14 exhibits magnetic relaxation behavior.

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