NiII‐LnIII Heterometallic Complexes as Single‐Molecule Magnets. Issue 9 (12th February 2019)

• Record Type: Journal Article
• Authors: Chakraborty, Amit; Goura, Joydeb; Bag, Prasenjit; Chandrasekhar, Vadapalli
• Is Part Of: European journal of inorganic chemistry. Issue 9(2019)
• Page Start: 1180
• Page End: 1200
• Publication Date: 2019-02-12
• Subjects: Heterometallic complexes -- Nickel -- Single‐molecule magnets -- Magnetic properties -- Magnetocaloric effect; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201801428
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract : This article deals with the synthesis, structural characterization, and magnetic studies of heterometallic Ni II /Ln III complexes. The article begins with an introduction on the phenomenon of single‐molecule magnetism and various types of molecular complexes that can function as molecular magnets. Among such complexes, 3d/4f combinations have been studied considerably, although examples involving Ni II are considerably fewer than those involving ions like Mn III . In this article, we discuss how Ni II can be profitably used to construct molecular magnets by describing features that allow this ion to exhibit magnetic anisotropy. Several examples of Ni II /4f complexes drawn from the literature and our own work are described. In most of these complexes, Ni II is six‐coordinate in a distorted octahedral geometry, while in one example Ni II is four‐coordinate in a square‐planar geometry. The various ligands involved in assembling such diverse complexes are also discussed. In each case the magnetic properties of the complexes, including some SMM properties in particular, are discussed. In view of the isotropic nature of the Gd III ion with seven unpaired f electrons, some Ni II /Gd III complexes possessing interesting magnetocaloric properties are also included. Abstract : The synthesis and study of the single‐molecule magnet (SMM) properties of heterometallic Ni‐4f complexes with varying nuclearity are reviewed.