2020
DOI: 10.1039/d0sc01197e
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Trends in trigonal prismatic Ln-[1]ferrocenophane complexes and discovery of a Ho3+single-molecule magnet

Abstract: Lanthanide ferrocenophanes are an intriguing class of organometallic complexes that feature rare six-coordinate trigonal prismatic coordination environments of 4f elements with close intramolecular proximity to iron ions.

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Cited by 17 publications
(18 citation statements)
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“…As Ho 3+ is a non-Kramers ion, it is necessary to separately consider each of the 16 m J levels of the ground multiplet as the degeneracy of 8 possible m J doublets is not ensured. [53][54][55][56][57][58][59][60][61][62][63][64] However, in all applied basis sets, the pairs of the lowest lying m J levels of 1-3 are close in energy, and well-separated from other states lying at least 70 cm À1 higher. These ground states are of a predominant |AE8i character (ca.…”
Section: Magnetic Propertiesmentioning
confidence: 89%
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“…As Ho 3+ is a non-Kramers ion, it is necessary to separately consider each of the 16 m J levels of the ground multiplet as the degeneracy of 8 possible m J doublets is not ensured. [53][54][55][56][57][58][59][60][61][62][63][64] However, in all applied basis sets, the pairs of the lowest lying m J levels of 1-3 are close in energy, and well-separated from other states lying at least 70 cm À1 higher. These ground states are of a predominant |AE8i character (ca.…”
Section: Magnetic Propertiesmentioning
confidence: 89%
“…S7, † the insets). [53][54][55][56][57][58][59][60][61][62][63][64] The ac magnetic characteristics gathered with an oscillating ac eld of 3 Oe indicate the presence of zero-dc-eld slow magnetic relaxation in 1-3 (Fig. 2, and S8-S10 †).…”
Section: Magnetic Propertiesmentioning
confidence: 90%
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“…A few highly anisotropic metal ions have proven to be important as the basic ingredient in an SMM, with dysprosium being the most popular and terbium, erbium and cobalt(II) also playing prominent roles. [13][14][15][16][17][18][19][20][21] In the case of Dy 3+ , a 4f 9 ion with oblate spheroidal electron density, successful SMM synthesis strategies tend to produce compounds in which the metal occupies a coordination environment with a strong and highly axial crystal eld. [22][23][24] This approach partly explains why the highest-performing SMMs are based on metallocene cations of the type [Dy(h 5 -Cp R ) 2 ] + , where the bulky cyclopentadienyl ligands [Cp R ] À provide the strong, axial crystal eld whilst also blocking the formation of any deleterious equatorial crystal eld.…”
Section: Introductionmentioning
confidence: 99%