Based on the newly designed ligand 4'-(3,5-dicarboxyphenyl)-4,2':6',4''-terpyridine (DCTP), a unique semi-conductive 3D framework {[Cu(Ι)Cu(ΙΙ)2(DCTP)2]NO3⋅1.5 DMF}n (1) with narrow band gap of 2.1 eV, was obtained and structurally characterized. DFT calculations van de Waals correction employed to explore electronic structure 1, clearly revealed its behavior. Furthermore, we found that 1 exhibits superior alignment water produce hydrogen degrade organic pollutants. Without adding any...

Toxic substances released during the combustion of epoxy resin (EP) not only cause casualties, but also pollute environment. Hence, aiming at flammability EP, a new triazine based metal organic framework (R1-MOF) was successfully synthesized by solvothermal method to reduce fire resistance EP. The single crystal structure MOF determined X-ray diffraction, and regular hexahedral scanning electron microscope. peak heat release rate, smoke generation CO CO2 EP composite loaded with 9 per 100...

Two systems of carbonate complexes are constructed <italic>via</italic> chemical fixation atmospheric CO₂, in which solvent-induced different structures and magnetic behaviors observed.

Three Dy₄ clusters based on a flexible and attractive Schiff base ligand HL have been synthesized, they showed different tetranuclear core arrangements. Magnetic studies reveal that <bold>1–3</bold> display distinct slow relaxation of magnetization.

One novel three-dimensional (3D) 3d-4f metal-organic framework (MOF), [TbZn(L)(CO3)2(H2O)]n (1) [HL = 4'-(4-carboxyphenyl)-2,2':6',2″-terpyridine], has been successfully synthesized and structurally characterized. Structural analysis shows that compound 1 features a unique chiral interpenetrating 3D for the first time. The resulting crystals of are composed enantiomers 1a (P41) 1b (P43), as was clearly confirmed by crystal structure corresponding circular dichroism (CD) analyses eight...

Two multifunctional metal-organic frameworks based on cubane-like tetrahedron Tb4 clusters as nodes have been synthesized and characterized. Compound 1 exhibits a 2D lanthanide-organic framework with nodes, compound 2 possesses 3D Mn2+ nodes. Interestingly, luminescent investigations them reveal that the two compounds can act recyclable probes for chromium(VI) anion species corresponding detection limit reach 10-7 mol/L. Furthermore, own efficient catalytic activity chemical fixation of CO2...

Herein, ten new linear-shaped LnIII4 and LnIII6 clusters, with the formula [Ln4(acac)6L2(CH3O)2(CH3OH)4]·xCH3OH (Ln = Nd (1), Sm (2), Eu (3), Gd (4), Tb (5), Dy (6), Tm (8), Hacac acetylacetone), [Ln6(acac)4L4(CH3O)6]·xCH3OH (Er (7) Yb (9)), [Lu4(acac)6L2(OH)2]·2CH2Cl2 (10), based on a polydentate Schiff base ligand, H2L, β-diketone co-ligand were successfully synthesized structurally characterized. Single crystal X-ray diffraction measurements reveal that structures of clusters 1-6, 8 10...

The cyclization reactions of propargylic alcohols and amines with CO2 are important in industrial applications, but it was a great challenge that non-noble-metal catalysts catalyzed both under mild conditions. Herein, the catalyst Cu2 O@ZIF-8 prepared by encapsulating O nanoparticles into robust ZIF-8, can effectively catalyze valuable α-alkylidene cyclic carbonates oxazolidinones turnover numbers (TONs) 12.1 19.6, which be recycled at least five times. mechanisms were further uncovered NMR,...

As a core task and an important link in the fields of natural language understanding information retrieval, extraction (IE) can structure semanticize unstructured multi-modal information. In recent years, deep learning (DL) has attracted considerable research attention to IE tasks. Deep learning-based entity relation techniques have gradually surpassed traditional feature- kernel-function-based methods terms depth feature model accuracy. this paper, we explain basic concepts DL, primarily...

The green conversion of CO 2 and propargylic amines was successfully achieved by using a noble-metal free MOF catalyst.

Two metal-organic frameworks (MOFs), namely, [Dy2Cu4I4(NA)6(DMF)2]n (1) and [Gd2Cu2I2(IN)6(DMF)4]·5DMF (2) (HNA = nicotinic acid, HIN isonicotinic acid), constructed based on lanthanide ions copper iodide clusters ([Cu4I4] [Cu2I2]) were successfully synthesized characterized. Compound 1 has a three-dimensional framework compound 2 displays two-dimensional plane with sql topology, respectively. Both of them exhibit high thermostability solvent stabilities. Additionally, catalytic explorations...

Four new [2 × 2] square grid LnIII4 clusters were successfully synthesized by employing a multidentate chelating Schiff base ligand. Magnetic studies showed that cluster <bold>1</bold> displays larger magnetocaloric effect (−Δ<italic>S</italic>_m = 34.46 J kg⁻¹ K⁻¹ for Δ<italic>H</italic> 7.0 T at 2.0 K), while <bold>3</bold> exhibits slow relaxation behavior under zero dc field, with Δ<italic>E</italic>/<italic>k</italic>_B of 42.76 K and...

A series of butterfly-shaped LnIII4 clusters were successfully synthesized. Magnetic studies show that the Gd₄ cluster displays magnetic refrigeration (Δ<italic>S</italic>_m = 18.85 J kg⁻¹ K⁻¹ for Δ<italic>H</italic> 7.0 T at 2.5 K), while Dy₄ shows SMMs behavior with Δ<italic>E</italic>/k_B 79.15 K and <italic>τ</italic>₀ 5.82 × 10⁻⁸ s.

Selectivity reversal for the hydrogenation of furfural is acheived by PdAg/C bimetallic catalysts under ambient conditions.

A polydentate Schiff-base ligand H 3 L and two different β-diketonate, molecular assemblies of linear-shaped Ln 4 8 clusters show disparate magnetocaloric effects single-molecule magnet behaviors.

The design and construction of high-nuclear lanthanide clusters with fascinating topology functional properties have been an active area research, however, the development effective approach for obtaining multifunctional is still extremely difficult. Up to now, a systematic guiding further expansion Ln(III)-based showing good lacking. Herein, we synthesize polydentate Schiff base ligand (HL), which reacts β-diketonate salts Ln(acac)3·2H2O, series Ln8...

The conversion of CO2 to generate high-value-added chemicals has become one the hot research topics in green synthesis. Thereinto, cyclization reaction propargylic amines with is highly attractive because resultant oxazolidinones are widely found pharmaceutical chemistry. Cu(I)-based metal-organic frameworks (MOFs) as catalysts exhibit promising application prospects for conversion. However, their practical was greatly limited due Cu(I) being liable disproportionation or oxidization. Herein,...

We report a low-cost and efficient catalytic system, involving in situ generated ligand-free Ni NPs, methanol sodium borohydride, for the semihydrogenation of alkynes under ambient conditions. This system exhibits remarkably high activity, satisfactory cis-selectivity internal alkynes, good stability general applicability.

Two ‘windmill’-shaped Ln₄ clusters (<bold>1</bold> and <bold>2</bold>) have been synthesized. The magnetic study reveals that <bold>1</bold> displays a larger cryogenic magnetocaloric effect, while <bold>2</bold> exhibits SMM behavior.

Two intriguing triangle-assembled LnIII6 clusters (<bold>1</bold> and <bold>2</bold>) have been synthesized. The magnetic study reveals that <bold>1</bold> displays a larger cryogenic magnetocaloric effect, while <bold>2</bold> exhibits remarkable SMM behaviors.

Two structurally similar metal–organic frameworks (MOFs) [Dy2Cu4I3(IN)7(DMF)2]·DMF (1) and [Dy2Cu4I3(IN)7(DMA)2]·DMA (2) (HIN = isonicotinic acid) feathering different coordinated solvent molecules were successfully isolated by tuning the types of solvents in reaction system. Structural tests indicate that 1 2 are both built from 1D Dy(III) chains copper iodide clusters [Cu4I3], generating into three-dimensional with an open channel along a axis. display extensive excellent stability....

A new porous copper–organic framework assembled from 12-nuclear [Cu12] nanocages {[Cu2(L4–)(H2O)2]·4DMA·2H2O}n (1) (H4L = 5,5′-(butane-1,4-diyl)-bis(oxy)-diisophthalic acid) was successfully prepared and structurally characterized. Compound 1 feathering of a 3D with two types 1D nanotubular channels large specific surface area can effectively enrich various harmful dyes. Additionally, due to the carbon dioxide (CO2) interactions open Cu(II) sites electron-rich ether oxygen atoms ligand in 1,...

The coupling reaction of propargylic amines and carbon dioxide (CO2) to synthesize 2-oxazolidinones is an important in industrial production, yet harsh conditions noble-metal catalysts are often required achieve high product yields. Herein, one novel noble-metal-free three-dimensional framework, [Mg3Cu2I2(IN)4(HCOO)2(DEF)4]n (1), assembled by magnesium copper clusters was synthesized applied this reaction. Compound 1 displays excellent solvent stability. Importantly, 1, acting as...