Abstract
A series of chloralilate-bridged dinuclear lanthanide complexes of formula [{LnIII(Tp)2}2(μ-Cl2An)]·2CH2Cl2, where Cl2An2− and Tp− represent the chloranilate and hydrotris (pyrazolyl)borate ligands, respectively, and Ln = Gd (1), Tb (2), Ho (3), Er (4), and Yb (5) was synthesized. All five complexes were characterized by an elemental analysis, infrared spectroscopy, single crystal X-ray diffraction, and SQUID measurements. The complexes 1–5 in the series were all isostructural. A comparison of the temperature dependence of the dc magnetic susceptibility data of these complexes revealed clear differences depending on the lanthanide center. Ac magnetic susceptibility measurements revealed that none of the five complexes exhibited a slow magnetic relaxation under a zero applied dc field. On the other hand, the Kramers systems (complexes 4 and 5) clearly displayed a slow magnetic relaxation under applied dc fields, suggesting field-induced single-molecule magnets that occur through Orbach and Raman relaxation processes.
Highlights
Single-molecule magnets (SMMs) and single-ion magnets (SIMs), comprising molecules with a one spin center, have attracted significant attention as potential candidates for molecule-based electronic applications such as high-density information storage [1], quantum computing [2,3,4,5], and spintronic devices [6,7,8,9]
The series of Cl2An2– bridged neutral dinuclear lanthanide(III) ions (LnIII) complexes 1–5 were prepared by a slight
Na2 Cl2 An·3H2 O and KTp were purchased from Tokyo Chemical Industry (TCI) Co., Ltd. (Tokyo, Japan)
Summary
Single-molecule magnets (SMMs) and single-ion magnets (SIMs), comprising molecules with a one spin center, have attracted significant attention as potential candidates for molecule-based electronic applications such as high-density information storage [1], quantum computing [2,3,4,5], and spintronic devices [6,7,8,9]. For the realization of such applications, a very large barrier height and a high blocking temperature for the reorientation of the magnetic moment must be achieved. The barrier height and blocking temperature in SMMs and SIMs depend on two key factors, namely, a significant magnetic anisotropy and large number of spins. The high magnetic anisotropy and large number of spins per ion make lanthanide(III) ions (LnIII ) highly suitable for application in SMMs and SIMs. the development of SMMs and SIMs based on Ln complexes is on the rise [10,11,12,13,14,15,16,17,18].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
