Ferromagnetism and Chirality in Two-Dimensional Cyanide-Bridged Bimetallic Compounds

Coronado, Eugenio; Gómez‐García, Carlos J.; Nuez, Alicia; Romero, Francisco M.; Русанов, Эдуард Б.; Stœckli-Evans, Helen

doi:10.1021/ic0257219

Cited by 132 publications

(53 citation statements)

References 16 publications

(10 reference statements)

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“…Thus, many coordination compounds have been synthesized with magnetic [1][2][3], electrical [4], and/or optical properties [5,6], Another hot topic in the last decades has been the incorporation of two or more properties in the same compound. Thus, multi-functional materials combining electrical conductivity and ferromagnetism [7], superconductivity and magnetism [8], chirality and magnetism [9,10], or porosity and magnetism [11], have been reported in the last two decades.…”

Section: Introductionmentioning

confidence: 99%

A Family of Lanthanoid Dimers with Nitroanilato Bridges

et al. 2016

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Abstract:The first complexes with lanthanoid ions and the nitroanilato ligand have been synthesized (nitroanilate dianion = [C 6 O 4 (NO 2 ) 2 ] 2− = dianion of the 3,6-dinitro-2,5-dihydroxo-1,4-dibenzoquinone ligand). This family of dimers can be formulated as [Ln 2 (C 6 O 4 (NO 2 ) 2 ) 3 (H 2 O) 10 ]·6H 2 O with Ln(III) = Sm (1), Gd (2), Tb (3), Dy (4), Ho (5), and Er (6). The X-ray structure of this family of isostructural complexes shows that they all present a dimeric structure where the Ln 3+ ions are connected by a bis-bidentate nitroanilato ligand. Each metal completes its nonacoordination environment with a terminal bidentate nitroanilato ligand and five water molecules in a slightly distorted tri-capped trigonal prismatic geometry. The magnetic properties of this family show the expected contributions of the lanthanoid ions without any noticeable magnetic interaction through the nitroanilato ligand. The compounds present luminesce of the nitroanilato ligand superimposed with a weaker emission from the lanthanide ion in compound 5 (Ho).

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Section: Introductionmentioning

confidence: 99%

A Family of Lanthanoid Dimers with Nitroanilato Bridges

et al. 2016

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“…(4), the solid state CD spectra exhibited positive peak at 19200 cm -1 and negative peaks at 16700 cm -1 and 33000 cm -1 for 1, and positive peak at 19100 cm -1 and 27200 cm -1 (shoulder) and a negative peak at 31400cm - [9,10]: positive d-d peak at 14500 cm -1 , positive CT peak at 18900 cm -1 , and negative CT peak at 28600 cm -1 . MCD spectra under 1.5 T (as reference and not shown, because characteristic magnetic interaction could not be measured at room temperature) exhibited positive peak at 19300 cm -1 and negative peaks at 16600 cm -1 and 34000 cm -1 for 1 and exhibited at 19100 cm -1 , 27000 cm -1 (shoulder), and a negative peak at 31600 cm -1 for 2.…”

Section: Electronic and CD Spectramentioning

confidence: 99%

“…In particular, multi-functional cyanide-bridged molecule-based magnetic materials [3,4] such as photomagnets [5][6][7][8], chiral magnets [9][10][11][12][13], and magnetic conductors [14] have attracted much attention from potential applications functional devices. Molecular design including electronic functions of cyanide-bridged metal complexes is still challenging task in the field of crystal engineering of organic-inorganic frameworks or coordination polymers.…”

Section: Introductionmentioning

confidence: 99%

Thermally-Accessible Lattice Strain and Local Pseudo Jahn-Teller Distortion in Various Dimensional CuII-MIII Bimetallic Cyanide-Bridged Assemblies

Akitsu¹,

Einaga²,

Yoza³

2008

TOICJ

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(3), were prepared and characterized structurally. Crystal structures were determined at 263 and 100 K for 1 and 2, while at 299 and 100 K for 3. Thermally-accessible lattice strain resulted in decreasing cell volume of 1.66, 1.06, and 4.1 % for 1-3, respectively. Large thermally-accessible structural change but small pseudo Jahn-Teller elongation at constant temperature could be found in both the long chain of the ladder structure for 3 and the monocuclear Cu II moieties for 1 and 2. In addition, novel mixing of ferromagnetic and antiferromagnetic interactions at low temperature was observed for 3. The correlations between dimensionality of cyanide-bridges and thermally-accessible structural changes distortion associated with Jahn-Teller distortion are also discussed by comparing with several known systems.

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“…The possibility of observing dynamic effects below a 3D ordering temperature in compound 1 could be attributed to the domain wall motion. [26] In summary, we have obtained a metal phosphonate com- (1) with a novel 3D framework structure embedded ferrimagnetic inorganic chains. These chains are well separated by the organic groups of the ligands.…”

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confidence: 93%