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Static field induced magnetic relaxations in dinuclear lanthanide compounds of [phen2Ln2(HCOO)4(HCOO)2−2x (NO3)2x ] (1, Ln = Gd and x = 0.52; 2, Ln = Er and x = 0.90; phen = 1,10-phenanthroline)

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Abstract

Two dinuclear lanthanide (Ln) complexes, formulated as [phen2Ln2(HCOO)4(HCOO)2−2x (NO3)2x ] (1, Ln = Gd and x = 0.52; 2, Ln = Er and x = 0.90; phen = 1,10-phenanthroline), were synthesized and characterized. They are isostructural. The dinuclear molecule consists of two Ln3+ bridged by four formate groups and chelated by phen and formate/nitrate ligands, and the Ln3+ possesses a coordination environment of distorted tri-capped trigonal prism of LnO7N2. Both compounds behave as paramagnets between 2 and 300 K, but display two static field induced magnetic relaxation processes. One is slow and of spin-lattice type, and it results from the lifting of Kramer’s degeneracy of the ground-states of both Gd3+ and Er3+, and the other is fast, and it might be spin-spin type.

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Authors and Affiliations

  1. Beijing National Laboratory for Molecular Sciences; State Key Laboratory of Rare Earth Materials Chemistry and Applications; College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China

    Bin Liu, BingWu Wang, ZheMing Wang & Song Gao

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  1. Bin Liu
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  2. BingWu Wang
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  3. ZheMing Wang
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  4. Song Gao
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Correspondence to ZheMing Wang or Song Gao.

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Liu, B., Wang, B., Wang, Z. et al. Static field induced magnetic relaxations in dinuclear lanthanide compounds of [phen2Ln2(HCOO)4(HCOO)2−2x (NO3)2x ] (1, Ln = Gd and x = 0.52; 2, Ln = Er and x = 0.90; phen = 1,10-phenanthroline). Sci. China Chem. 55, 926–933 (2012). https://doi.org/10.1007/s11426-012-4599-5

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