Nitrate-bridged "pseudo-double-propeller"-type lanthanide(III)-copper(II) heterometallic clusters: syntheses, structures, and magnetic properties

Abhijeet K Chaudhari; Biplab Joarder; Eric Rivière; Guillaume Rogez; Sujit K Ghosh

doi:10.1021/ic3012876

Nitrate-bridged "pseudo-double-propeller"-type lanthanide(III)-copper(II) heterometallic clusters: syntheses, structures, and magnetic properties

Inorg Chem. 2012 Sep 3;51(17):9159-61. doi: 10.1021/ic3012876. Epub 2012 Aug 21.

Authors

Abhijeet K Chaudhari¹, Biplab Joarder, Eric Rivière, Guillaume Rogez, Sujit K Ghosh

Affiliation

¹ Indian Institute of Science Education and Research (IISER), Pashan, Pune, Maharashtra 411021, India.

PMID: 22909388
DOI: 10.1021/ic3012876

Abstract

Two discrete nitrate-bridged novel "pseudo-double-propeller"-shaped hexanuclear Cu/Ln clusters of the formula [Cu(4)Ln(2)L(4)L'(4)(NO(3))(2)(OH(2))(2)]·3NO(3)·4H(2)O [Ln = Dy, Gd; LH = o-vanilin; L'H = 2-(hydroxyethyl)pyridine] were synthesized and characterized. Single-crystal X-ray diffraction studies revealed the trimeric half-propeller-type Cu(2)/Ln core connected to other opposite-handed similar trimers by a bridging nitrate ligand. The Dy analogue, [Cu(4)Dy(2)L(4)L'(4)(NO(3))(2)(OH(2))(2)]·3NO(3)·4H(2)O, shows frequency-dependent out-of-phase alternating-current magnetic susceptibility, which indicates that this novel discrete [Cu(4)Dy(2)] heterometallic cluster may exhibit single-molecule-magnet behavior.