Four new families of polynuclear Zn-Ln coordination clusters. Synthetic, topological, magnetic and luminescent aspects

Griffiths, Kieran, Mayans, Julia, Shipman, Michael A, Tizzard, Graham J, Coles, Simon J, Blight, Barry A, Escuer, Albert and Kostakis, George E (2017) Four new families of polynuclear Zn-Ln coordination clusters. Synthetic, topological, magnetic and luminescent aspects. Crystal Growth & Design, 17 (4). pp. 1524-1538. ISSN 1528-7483

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Abstract

The employment of three structurally related Schiff bases H2L1, H2L2, and H3L3 with zinc and lanthanide salts under various reaction conditions, gave four families of compounds formulated as [ZnII2LnIII2(L1)4(EtOH)6][ClO4]2 (1–3), [ZnII5Ln(OH)(L1)6(H2O)] (4–6), [ZnII4LnIII2(OH)2(L2)4 (OAc)2(NO3)2(DMF)3]·DMF (7–9), and [ZnII2LnIII2(L3)2(NO3)2(CO3)2(CH3OH)2] (10–12) with robust and novel topologies. Synthetic aspects are discussed. A comprehensive topological analysis of all reported ZnII/LnIII CCs with a core nuclearity of four and above is presented and identifies that families (4–6) and (7–9) are the first examples of the 2,3,4M6–1 motif in ZnII/LnIII chemistry. Magnetic studies are presented for the DyIII analogues (1, 7, and 10) are presented, 7 demonstrates field-induced slow relaxation of the magnetization. Fluorescence studies are also discussed.

Item Type: Article
Keywords: Coordination Clusters,Lanthanide,Magnetism,Topology,Zinc
Schools and Departments: School of Life Sciences > Chemistry
Subjects: Q Science > QD Chemistry > QD0146 Inorganic chemistry
Depositing User: Georgios Kostakis
Date Deposited: 22 Feb 2017 09:07
Last Modified: 26 Apr 2017 00:43
URI: http://sro.sussex.ac.uk/id/eprint/66844

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