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Three Coordination Frameworks with Copper Formate based Low Dimensional Motifs: Synthesis, Structure and Magnetic Properties

Bovill, Sally M., Dixey, Richard J. C., Saines, P.J. (2017) Three Coordination Frameworks with Copper Formate based Low Dimensional Motifs: Synthesis, Structure and Magnetic Properties. CrystEngComm, 19 (13). pp. 1831-1838. ISSN 1466-8033. (doi:10.1039/C6CE01601D) (KAR id:60844)

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In this study we report the synthesis, crystal structures and magnetic properties of three frameworks wherein Cu cations are bridged by formate linkers into one-dimensional motifs. One of these compounds, Cu2(HCO2)3(C3N2H4)4(NO3), contains a ladder motif but remains paramagnetic to 2 K. This is likely because of the longer superexchange pathway along its chains due to the orientation of the Jahn-Teller axis of its Cu cations. In contrast Cu(HCO2)(NO3)(NH3)2 and Cu(HCO2)(ClO4)(NH3)2 feature Cu(HCO2) chains in which the Jahn-Teller axis is oriented perpendicular to the chain direction; these exhibit antiferromagnetic order below 12 and 7 K, respectively. Their magnetic susceptibilities are well fitted by a one-dimensional chain model but further examination of their magnetic properties reveals significant inter-chain magnetic coupling and a lack of spin dynamics. This suggests that these transitions correspond to the emergence of long-range magnetic order, highlighting the importance of detailed studies of frameworks containing low dimensional motifs to gain a deeper understanding of their magnetic behaviour.

Item Type: Article
DOI/Identification number: 10.1039/C6CE01601D
Subjects: Q Science
Q Science > QD Chemistry
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Michael Woods
Date Deposited: 10 Mar 2017 16:51 UTC
Last Modified: 09 Dec 2022 05:35 UTC
Resource URI: (The current URI for this page, for reference purposes)

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