Trinuclear and mononuclear lanthanoid complexes containing 2-Methyl-8-quinolinolate: synthesis, structures, and magnetic properties

Ghazali, Nurul F., Phonsri, Wasinee, Murray, Keith S., Junk, Peter C., Deacon, Glen B., and Turner, David R. (2019) Trinuclear and mononuclear lanthanoid complexes containing 2-Methyl-8-quinolinolate: synthesis, structures, and magnetic properties. European Journal of Inorganic Chemistry, 2019 (20). pp. 2549-2557.

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Abstract

Two series of new lanthanoid complexes containing 2-methyl-8-quinolinolate (MQ(-)) have been prepared at elevated temperatures. Lighter elements yield trinuclear complexes [Ln(3)(MQ)(9)(HMQ)]5H(2)O3MeOH (1Ln, where Ln = Pr, Eu, Gd, Tb, Dy and Ho) by solvothermal reactions, and heavier lanthanoids yield the mononuclear complexes [Ln(MQ)(3)(HMQ)]HMQ MeOH (2Ln, where Ln = Dy, Ho, Er and Yb), with overlap between the two series found in the cases of Dy and Ho. Magnetic studies reveal that 1Tb, 1Dy, and 2Er show distinct slow magnetic relaxation under external DC fields. The magnetic data for 1Gd yielded the J value for weak antiferromagnetic coupling and the magnetocaloric -Delta S-m value of 20 J kg(-1)K(-1) at 2 K and Delta H = 5 T.

Item ID: 60887
Item Type: Article (Research - C1)
ISSN: 1099-0682
Keywords: Lanthanides, Quinaldinolate, Magnetic properties, Lanthanide contraction, Structure elucidation
Copyright Information: © 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
Funders: Malaysian Ministry of Higher Education (MMHE), University Technology MARA (UiTM), Australian Research Council (ARC)
Projects and Grants: ARC DP160101640, ARC DP190100798, ARC Discovery grant
Date Deposited: 06 Nov 2019 08:05
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030202 f-Block Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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