title: Unique nanoscale {Cu(II)36Ln(III)24} (Ln = Dy and Gd) metallo-rings.
abstract: Two unprecedented 3d-4f hexagonal metallo-rings {Ln(24)Cu(36)} (Ln = Dy and Gd) with a diagonal dimension of about 4.6 nm were facilely synthesized by self-assembly of Cu(II), Ln(III) nitrates and benzoate in the presence of triethylamine. Magnetic studies show slow relaxation behaviour for the dysprosium analogue and a large magnetocaloric effect (MCE) for the gadolinium analogue.
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
authors.forename: Ji-Dong
authors.initials: JD
authors.lastname: Leng
authors.forename: Jun-Liang
authors.initials: JL
authors.lastname: Liu
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Tong