Two polymeric 36-metal pure lanthanide nanosize clusters

By Mingyan Wu, F. Jiang, Xiang‐Jian Kong, Daqiang Yuan, L. Long, S. Al‐Thabaiti, M. Hong. 2013

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Two rarely seen 2D coordination polymers based on huge 36-metal pure lanthanide clusters, {[Gd36(NA)36(OH)49(O)6(NO3)6(N3)3(H2O)20]Cl2·28H2O}n (1) and {[Dy36(NA)36(OH)49(O)6(NO3)6(N3)3(H2O)20]Cl2·28H2O}n (2) (HNA = nicotinic acid), were synthesized and structurally characterized. The spherical Ln36 skeleton can be viewed as the aggregation of one cyclohexane chair-like Ln24 wheel and two identical tripod-like Ln6 units. The coordination of the carboxylic groups of the NA ligands with the Ln(III) cations results in a square layer. Additionally, compound 1 possesses a large MCE of 39.66 J kg−1 K−1 and compound 2 exhibits slow relaxation of the magnetization.

Subfields: Electronic, Optical and Magnetic Materials, Inorganic Chemistry, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/bf70bc35deb300bdb965e098298b9edafe70ad9b