Abstract Three isoskeletal tetranuclear coordination clusters with general formula [M II 2 Dy III L 4 (EtOH) 6 ](ClO ) ⋅2 EtOH, (M=Co, 1 ; M=Ni, and [Ni Cl (CH 3 CN) ]⋅2 CH CN ( ), have been synthesized characterized. These air‐stable compounds, in particular , display efficient homogeneous catalytic behavior the room‐temperature synthesis of trans ‐4,5‐diaminocyclopent‐2‐enones from 2‐furaldehyde primary or secondary amines under a non‐inert atmosphere.

A series of custom-designed isoskeletal tetranuclear 3d/4f coordination clusters (CCs) show high efficiency as catalysts in Friedel–Crafts alkylation.

A series of heterometallic coordination clusters (CCs) [NiII2LnIII2(L1)4Cl2(CH3CN)2] 2CH3CN [Ln = Y (1Y), Sm (1Sm), Eu (1Eu), Gd (1Gd), or Tb (1Tb)] were synthesized by the reaction (E)-2-(2-hydroxy-3-methoxybenzylidene-amino)phenol) (H2L1) with NiCl2·6(H2O) and LnCl3·x(H2O) in presence Et3N at room temperature. These air-stable CCs can be obtained very high yields from commercially available materials are efficient catalysts for room-temperature domino ring-opening electrocyclization...

This paper demonstrates a metal–organic framework (MOF) containing photoswitches within the pores as hybrid solar thermal fuel (STF) and solid–solid phase-change material (ss-PCM). A series of azobenzene-loaded MOFs were synthesized with general formula Zn2(BDC)2(DABCO)(AB)x (BDC = 1,4-benzenedicarboxylate, DABCO 1,4-diazabicyclo[2.2.2]octane, AB azobenzene, where x 1.0, 0.9, 0.5, 0.3), herein named 1⊃AB1.0, 1⊃AB0.9, 1⊃AB0.5, 1⊃AB0.3 respectively. X-ray powder diffraction, solid-state NMR,...

Michael addition (MA) is one of the most well studied chemical transformation in synthetic chemistry. Here, we report synthesis and crystal structures a library 3d/4f coordination clusters (CCs) formulated as [ZnII2YIII2L4(solv)X(Z)Y] study their catalytic properties toward MA nitrostyrenes with barbituric acid derivatives. Each CC presents two borderline hard/soft Lewis acidic ZnII centers hard YIII defect dicubane topology that brings different metals into proximity ∼3.3 Å. Density...

Abstract For corrigendum see DOI: 10.1002/anie.198805891

The employment of three structurally related Schiff bases H2L1, H2L2, and H3L3 with zinc lanthanide salts under various reaction conditions, gave four families compounds formulated as [ZnII2LnIII2(L1)4(EtOH)6][ClO4]2 (1–3), [ZnII5Ln(OH)(L1)6(H2O)] (4–6), [ZnII4LnIII2(OH)2(L2)4 (OAc)2(NO3)2(DMF)3]·DMF (7–9), [ZnII2LnIII2(L3)2(NO3)2(CO3)2(CH3OH)2] (10–12) robust novel topologies. Synthetic aspects are discussed. A comprehensive topological analysis all reported ZnII/LnIII CCs a core nuclearity...

The transformative character of the reported 3d–4f Coordination Clusters (CCs) in catalytic reactions is summarised, demonstrating potential this emerging field.

Abstract Electrical double‐layer supercapacitors offer numerous advantages in the context of energy storage; however, their widespread use is hindered by high unit cost and low specific energy. Recently, water‐in‐salt (WIS) electrolytes have garnered interest for storage devices. Nevertheless, direct application high‐power devices limited due to viscosity. In this study, we investigate WIS Lithium bis(trifluoromethanesulfonyl)Imide (LiTFSI) electrolyte, revealing a capacitance despite its...

CC-linkage of two o-phenylene ligands was observed in the isomerization dinuclear gold(II) complex 1, X = I or Br, to 2. An unusual feature this rearrangement is that product remains fixed via P-donor atoms coordination sphere metal atoms.—1 obtained from 1a (see previous communication).

Efficient photoswitching in the solid-state remains rare, yet is highly desirable for design of functional solid materials. In particular, molecular solar thermal energy storage materials high conversion to metastable isomer crucial achieve density. Herein, we report that 4-methoxyazobenzene (MOAB) can be occluded into pores a metal-organic framework Zn

Crystalline binary mixtures of azobenzene and 4-methoxyazobenzene are reported form photochemical phase change materials that possess working temperatures in the range −58 °C to 31 °C.

We report for the first time efficiency of heteronuclear Zn/Ln coordination clusters (CCs) as catalysts multicomponent Mannich-type condensation that involves amines, aldehydes and boronic acids, known Petasis borono-Mannich (RBR) reaction.

Nine coordination clusters (M = Co^II/III, Ni^II, Cu^II) using a monoanionic Schiff base ligand were synthesized and characterized. A series of transformations occur in the certain compounds.

We demonstrate for the first time high efficacy of tetranuclear ZnII2LnIII2 coordination clusters (CCs) as catalysts Friedel–Crafts (FC) alkylation indoles with a range trans-β-nitrostyrenes. The reaction proceeds in good to excellent yields (76%–99%) at room temperature catalyst loadings low 1.0 mol %.

This work addresses and enlightens synthetic aspects derived from our effort to systematically construct isoskeletal tetranuclear coordination clusters (CCs) of the general formula [TR₂Ln₂(<bold>LX</bold>)₄(NO₃)₂(solv)₂] possessing a specific defected dicubane topology.

Synthetic challenges and catalytic activity evaluation of Zn/(Dy,Y) coordination clusters derived from a dinucleating Schiff base ligand.

Ähnliche Gold-Gold-Abstände wie im Metall (2.88 Å) sind bei mehreren zweikernigen Gold(I)-Komplexen bekannt. Die Titelverbindungen 1 machen keine Ausnahme: Der Au…︁Au-Abstand von 1a (2.86 spricht für eine Bindungswechselwirkung zwischen den Metallatomen. wird aus [o-LiC6H4PPh2] und [AuBr(PEt3)] erhalten; 1b–d lassen sich analog herstellen.

From an investigation of varying the steric bulk a flexible ligand, we have produced family structures using similar reaction conditions. Even small changes from hydrogen atom to methyl ethyl group on ligand influences structural outcome, which can also be steered by nature metal source. We employed Schiff base ligands combining o-vanillin and three different 2-amino-1,3-propandiol units, leading H3L1 (R = hydrogen), H3L2 methyl), H3L3 ethyl). The differing nuclearities clusters, 1–3,...

The air stable and high yielding tetranuclear coordination cluster [CuII2DyIII2L₄(NO₃)₂(CH₃CN)₂]·2(CH₃CN) promotes the Suzuki coupling reaction of phenylboronic acid with substituted aryl halides under environmentally benign conditions.

Mixing Co(NO3)2·6H2O/Dy(NO3)3·6H2O/(E)-4-(2-hydroxy-3-methoxybenzylideneamino)-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (HL)/pivalic acid/Et3N in various solvents results the synthesis of seven compounds formulated as [CoII2DyIII2(μ3-MeO)2(L)2(piv)4(NO3)2] (3), [CoIIDyIII3(μ3-MeO)2(μ2-MeO)2(L)2(piv)2(NO3)3]·2(CH3OH) (4·2CH3OH), 2[CoII4DyIII4(μ2-O)2(μ3-OH)4(L)4(piv)8][CoII2DyIII5(μ3-OH)6(L)2(piv)8(NO3)4] (5), [CoII4DyIII4(μ2-O)2(μ3-OH)4(L)4(piv)8]·2(CH3CN) (6·2CH3CN),...

Solar thermal fuel (STF) materials store energy through light-induced changes in the structures of photoactive molecular groups, and stored is released as heat when system undergoes reconversion to ground-state structure. Solid-state STF devices could be useful for a range applications; however, structural required storage are often limited or prevented by dense packing condensed phases. Recently, polymers have been proposed effective solid-state platforms, they can offer bulk properties...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn electronically unsaturated trinickel complex containing triply bridging benzyne and 2,2'-biphenylyl groupsMartin A. Bennett, K. David Griffiths, Tamon Okano, Viraraghavan Parthasarathi, Glen B. RobertsonCite this: J. Am. Chem. Soc. 1990, 112, 19, 7047–7048Publication Date (Print):September 1, 1990Publication History Published online1 May 2002Published inissue 1 September...

A systematic study was performed to further optimise the catalytic room-temperature synthesis of trans-4,5-diaminocyclopent-2-enones from 2-furaldehyde and primary or secondary amines under a non-inert atmosphere. For this purpose, series dinuclear lanthanide (III) coordination polymers were synthesised using dianionic Schiff base their activities investigated.

The reaction of ( E )‐2‐(2‐hydroxy‐3‐methoxybenzylideneamino)phenol (H 2 L1) with Co(NO 3 ) 6H O and LnCl x O) afforded a family hexanuclear heterometallic coordination clusters (CCs) formulated as [Co II 4 Ln III (µ ‐OH) (L1) Cl (NO (MeOH) ] 3(Et where is Y 1 ), Gd Dy Tb ). All the compounds are stable in solution confirmed by ESI‐MS studies. can be described twisted boat‐like possess , 4M6 – topology. )‐2‐(5‐bromo‐2‐hydroxy‐3‐methoxybenzylideneamino)phenol L2) DyCl (L2) 5 which isoskeletal...