2D-metal–organic coordination polymers of lanthanides (La(<scp>iii</scp>), Pr(<scp>iii</scp>) and Nd(<scp>iii</scp>)) with redox-active dioxolene bridging ligands

Kharitonov, Alexandr D.; Trofimova, O. Yu.; Meshcheryakova, I. N.; Fukin, Georgy K.; Khrizanforov, Mikhail; Budnikova, Yu. G.; Bogomyakov, A. S.; Aysin, Rinat R.; Kovalenko, Konstantin A.; Piskunov, A. V.

doi:10.1039/d0ce00767f

Cited by 31 publications

(21 citation statements)

References 48 publications

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“…Although not very common, distorted hexagonal lattices have already been found in other Ln-anilato compounds with different anilato ligands, solvents and Ln(III) ions [ 40 , 41 , 44 , 55 , 58 , 59 , 60 , 66 , 67 ]. In contrast, phase IIb is rather unusual and has only been observed in a few examples of Ln(III) with different anilato ligands (X = Cl, Br, Cl/CN and t -Bu) [ 40 , 41 , 44 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 67 ], although it had never been observed with dhbq 2− [ 55 ]. Therefore, compound 1 is the first example of phase IIb with the ligand dhbq 2− .…”

Section: Resultsmentioning

confidence: 99%

Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

et al. 2021

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The search for two- and three-dimensional materials with slow relaxation of the magnetization (single-ion magnets, SIM and single-molecule magnets, SMM) has become a very active area in recent years. Here we show how it is possible to prepare two-dimensional SIMs by combining Dy(III) with two different anilato-type ligands (dianions of the 3,6-disubstituted-2,5-dihydroxy-1,4-benzoquinone: C6O4X22−, with X = H and Cl) in dimethyl sulfoxide (dmso). The two compounds prepared, formulated as: [Dy2(C6O4H2)3(dmso)2(H2O)2]·2dmso·18H2O (1) and [Dy2(C6O4Cl2)3(dmso)4]·2dmso·2H2O (2) show distorted hexagonal honeycomb layers with the solvent molecules (dmso and H2O) located in the interlayer space and in the hexagonal channels that run perpendicular to the layers. The magnetic measurements of compounds 1, 2 and [Dy2(C6O4(CN)Cl)3(dmso)6] (3), a recently reported related compound, show that the three compounds present slow relaxation of the magnetization. In compound 1 the SIM behaviour does not need the application of a DC field whereas 2 and 3 are field-induced SIM (FI-SIM) since they show slow relaxation of the magnetization when a DC field is applied. We discuss the differences observed in the crystal structures and magnetic properties based on the X group of the anilato ligands (H, Cl and Cl/CN) in 1–3 and in the recently reported derivative [Dy2(C6O4Br2)3(dmso)4]·2dmso·2H2O (4) with X = Br, that is also a FI-SIM.

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Section: Resultsmentioning

confidence: 99%

Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

et al. 2021

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“…The atom La(III) is 8-coordinated with a distorted triangular dodecahedron geometry (TDD-8, minimum CShM value is 1.148) ( Figure 8 ). The metal–organic coordination polymer 4 has a similar structure to the recently published derivatives [Ln 2 (pQ) 3 ∙4DMAA] n (Ln = La, Pr, Nd, DMAA = N,N′-dimethylacetamide) [ 29 ]. The main difference is the type of anilate ligands binding to lanthanide ions ( Scheme 3 ).…”

Section: Resultsmentioning

confidence: 92%

“…Most commonly, researchers use chlorine [ 16 , 19 , 20 ], bromine [ 17 , 21 , 22 ], fluorine [ 23 , 24 ], nitro [ 25 , 26 ] and cyano-substituted [ 22 , 27 , 28 ] anilate ligands. The first paper on the use of 3,6-di-tert-butyl-2,5-dihydroxy-para-benzoquinone in the construction of 2D layered lanthanum MOFs was published [ 29 ]. Lanthanide MOFs/CPs are of great interest for their outstanding optical and magnetic properties [ 4 , 6 , 22 , 28 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Heteroleptic LaIII Anilate/Dicarboxylate Based Neutral 3D-Coordination Polymers

et al. 2021

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Three new 3D metal–organic frameworks of lanthanum based on mixed anionic ligands, [(La2(pQ)2(BDC)4)·4DMF]n, [(La2(pQ)2(DHBDC)4)·4DMF]n, [(La2(CA)2(BDC)4)·4DMF]n (pQ—dianion of 2,5-dihydroxy-3,6-di-tert-butyl-para-quinone, CA—dianion of chloranilic acid, BDC-1,4-benzenedicarboxylate, DHBDC-2,5-dihydroxy-1,4-benzenedicarboxylate and DMF-N,N′-dimethylformamide), were synthesized using solvothermal methodology. Coordination polymers demonstrate the rare xah or 4,6T187 topology of a 3D framework. The homoleptic 2D-coordination polymer [(La2(pQ)3)·4DMF]n was obtained as a by-product in the course of synthetic procedure optimization. The thermal stability, spectral characteristics and porosity of coordination polymers were investigated.

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“…MOFs that contain redox‐active organic ligands bonded directly to metal are rare. Among them are dioxolene [5a–d] and 2,3‐pyrazinedithiolate [5e] derivatives. Main group metal based MOFs are also attractive due to their ability to form kinetically stable coordination polymers that reveal interesting properties.…”

Section: Introductionmentioning

confidence: 99%

1D Coordination Polymer Derived from Redox‐Active Digallane

et al. 2021

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The reaction of [LGa−GaL] (1) (L=dpp‐bian=1,2‐bis[(2,6‐diisopropylphenyl)imino]acenaphthene) with 4,4′‐bipyridine (4,4‐bipy) results in the formation of complex [L2(4,4‐bipy)2Ga2] (2). The reaction of 1 with 1,3‐bis(4‐pyridyl)propane (1,3‐Py2(CH2)3) affords 1D coordination polymer [L2(μ2‐1,3‐Py2(CH2)3)Ga2]n (3). Compounds 2 and 3 were characterized by 1H NMR and IR spectroscopy; their molecular structures were established by single‐crystal X‐ray analysis.

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2D-metal–organic coordination polymers of lanthanides (La(iii), Pr(iii) and Nd(iii)) with redox-active dioxolene bridging ligands

Abstract:
2D-coordination redox-active networks bearing t-Bu-substituted anilic bridged ligands and lanthanide ions were synthesized and characterized.

Cited by 31 publications

References 48 publications

Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

Heteroleptic LaIII Anilate/Dicarboxylate Based Neutral 3D-Coordination Polymers

1D Coordination Polymer Derived from Redox‐Active Digallane

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2D-metal–organic coordination polymers of lanthanides (La(iii), Pr(iii) and Nd(iii)) with redox-active dioxolene bridging ligands

Abstract: 2D-coordination redox-active networks bearing t-Bu-substituted anilic bridged ligands and lanthanide ions were synthesized and characterized.

Cited by 31 publications

References 48 publications

Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

Slow Relaxation of the Magnetization in Anilato-Based Dy(III) 2D Lattices

Heteroleptic LaIII Anilate/Dicarboxylate Based Neutral 3D-Coordination Polymers

1D Coordination Polymer Derived from Redox‐Active Digallane

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Abstract:
2D-coordination redox-active networks bearing t-Bu-substituted anilic bridged ligands and lanthanide ions were synthesized and characterized.