A mononuclear DyIII complex with a non-Schiff base compartmental ligand has been prepared and characterised by X-ray crystallography ac magnetic susceptibility measurements. The exhibits SIM behaviour induced dilution and/or field two thermally activated relaxation processes.

A novel ultramicroporous coordination polymer, namely [Cu(F-pymo)2(H2O)1.25]n (1, F-pymo = 5-fluoropyrimidin-2-olate), has been prepared and structurally characterized. 1 displays a zeolitic gismondine (GIS) topology, with ca. 2.9 Å wide helical channels which, in the thermally activated counterpart (1'), account for 13% void volume are responsible observed selective solid−gas adsorption properties toward H2, N2, CO2. At 77 K 1' behaves as molecular sieve, selectively adsorbing H2 over...

Mesoporous silica material based drug delivery systems (DDSs) containing curcumin show biocompatibility in normal cells and an effective anti-cancer effect cancer cells.

Abstract New aluminium scorpionate based complexes have been prepared and used for the synthesis of cyclic carbonates from epoxides carbon dioxide. Bimetallic aluminium(heteroscorpionate) 9 – 14 were synthesised in very high yields. The single‐crystal X‐ray structures 12 13 confirm an asymmetric κ 2 ‐NO‐μ‐O arrangement a dinuclear molecular disposition. These bimetallic investigated as catalysts dioxide presence ammonium salts. Under optimal reaction conditions, complex combination with...

Excessive and uncontrolled application of agrochemicals has resulted in contamination terrestrial aquatic environments. In the past decade, metal–organic frameworks (MOFs) have been studied as agrochemical release systems to enhance efficiency while reducing leaching toxic molecules environment. this work, we take a further step use organic linkers preparation MOFs, which called AgroMOFs. Particularly, prepared novel 2D framework, named GR-MOF-20, based on flexible herbicide glyphosine...

Metal–organic frameworks (MOFs) are an interesting class of porous crystalline solids assembled from organic ligands and metal clusters (or simply cations), which have shown a rich variety promising applications. In recent years, these materials become one the most actively studied areas in field new development. One aspects MOFs is their optical properties porosity, may be smartly coupled with aim creating multifunctional materials. This work gives overview significant achievements on this...

New neutral and zwitterionic chiral NNO-donor scorpionate ligands 1 2 were designed to obtain new mononuclear dinuclear NNO-heteroscorpionate aluminum complexes. Reaction of with [AlR3 ] (R=Me, Et) in a 1:1 or 1:2 molar ratio afforded the alkyl complexes [AlR2 (κ2 -bpzappe)] {R=Me (3), Et (4); bpzappeH=2,2-bis(3,5-dimethylpyrazol-1-yl)-1-[4-(dimethylamino)phenyl]-1-phenylethanol} bimetallic [{AlR2 -bpzappe)}(μ-O){AlR3 }] [R=Me (5), (6)]. By reaction 3-6 PhCH2 Br, cationic -bbpzappe)]Br (7),...

The coupling reaction of carbon dioxide and terminal, internal, highly substituted epoxides derived from renewable resources such as furfural, limonene, carvone, carvyl acetate, terpinen-4-ol, or ionone leads to the synthesis new bioderived cyclic carbonates using an efficient aluminum catalyst under mild solvent-free conditions. Interestingly, can occur with excellent diastereoselectivity, obtaining in some cases one diastereoisomer major product. X-ray crystal structures two...

Mesoporous silica nanoparticles (MSNs) are an interesting class of nanomaterials with potential applications in different therapeutic areas and that have been extensively used as drug carriers fields medicine. The present work is focused on the synthesis MSNs containing a maleamato ligand (MSN-maleamic) subsequent coordination copper(II) ions (MSN-maleamic-Cu) for exploration their application antibacterial agents. Cu-containing characterized by techniques preliminary effect supported...

Herein, we describe and study a new family of isostructural multifunctional metal-organic frameworks (MOFs) with the formula {[Ln5L6(OH)3(DMF)3]·5H2O}n (where (H2L) is 3-amino-4-hydroxybenzoic acid ligand) for magnetism photoluminescence. Interestingly, three materials (Dy-, Er-, Yb-based MOFs) present single-molecule magnet (SMM) behavior derived from magnetic anisotropy lanthanide ions as consequence adequate electronic distribution coordination environment. Additionally, photoluminescence...

Although agrochemical practices can enhance agricultural productivity, their intensive application has resulted in the deterioration of ecosystems. Therefore, it is necessary to develop more efficient and less toxic methods against pests infections while improving crop productivity. Moving toward sustainable development, this work, we originally described preparation a composite (ZIF-8@HA) consisting coating zeolitic-like metal-organic framework (MOF) ZIF-8 (based on Zn, an essential...

The title compounds, which have been prepared from M(II) salts (M = Co and Fe) 5-(pyrimidyl)tetrazole under hydrothermal conditions, are isomorphous exhibit a 2D square-grid-like structure; the cobalt complex is spin-canted antiferromagnet with Tc 15 K.

The hydrothermal reaction of 2-cyanopyrimidine and either CoCl2·6H2O or FeCl2·4H2O affords 2D isostructural coordination polymers [M2(μ-pymca)3]OH·H2O ((M = CoII (1) FeII (2) pymca pyrimidine-2-carboxylato). bisdidentate ligand (pymca) that can be considered an intermediate between bipyrimidine oxalato is generated in situ from the hydrolysis 2-cyanopyrimidine. structure 1 2 consists heterochiral (6,3) honeycomb layers, crystal water molecules, OH- anions, latter playing a template balancing...

We report lanthanide-based MOFs with interesting magnetic behaviours. To the best of our knowledge, Nd³⁺ and Yb³⁺ materials are first examples 3D- 2D-MOFs, respectively, that show slow relaxation magnetization.

Eleven dimetallic Zn(II)-Ln(III) complexes of the general formula [Zn(µ-L)(µ-OAc)Ln(NO3)2]·CH3CN (Ln(III) = Pr (1), Nd (2), Sm (3), Eu (4), Gd (5), Tb (6), Dy (7), Ho (8), Er (9), Tm (10), Yb (11)) have been prepared in a one-pot reaction from compartmental ligand N,N'-dimethyl-N,N'-bis(2-hydroxy-3-formyl-5-bromo-benzyl)ethylenediamine (H2L). In all these complexes, Zn(II) ions occupy internal N2O2 site whereas Ln(III) show preference for O4 external site. Both metallic are bridged by an...

Detailed structural, magnetic, and photoluminescence characterization of a family new compounds based on 5-cyanoisophthalate (CNip) ligand several transition metal or lanthanide ions, namely, [Cu3(μ3-CNip)2(μ-H2O)2(μ3-OH)2]n (1), {[Co3(μ4-CNip)3(DMF)4]·∼2DMF}n (2), [Cd(μ4-CNip) (DMF)]n (3), {[Ln2(μ4-CNip)(μ3-CNip)2(DMF)4]·∼DMF·H2O}n (4-Ln) (with LnIII = Tb, Dy, Er), {[Gd6(μ3-CNip)5(μ4-CNip)3(μ-form)2(H2O) (DMF)10]·∼3DMF·3H2O}n (5), {[Zn32(μ4-CNip)12(μ-CNip)12(μ4-O)8(H2O)24]·∼12DMF}n (6)...

Luminescent coordination polymers (CPs) are known for their unique abilities to provide tunable emission processes originated at the interplay between infinite inorganic and organic constituents combined in endless ways, thus yielding smart molecule‐scaled materials be processed as photodevices, sensors, optical storage systems or even logic gates. Nonetheless, most of these applications demand occurrence persistent luminescence prevent background interference with fluorescence signal. This...

Pesticides are agrochemical compounds used to kill pests (insects, rodents, fungi, or unwanted plants), which key meet the world food demand. Regrettably, some important issues associated with their widespread/extensive use (contamination, bioaccumulation, and development of pest resistances) demand a reduction in amount pesticide applied crop protection. Among novel technologies combat deterioration our environment, metal-organic frameworks (MOFs) have emerged as innovative promising...

Hydrazones and their metal derivatives are very important compounds in medicinal chemistry due to reported variety of biological activities, such as antibacterial, antifungal anticancer action. Five hydrazone-pyrazolone ligands H2Ln (n = 1-5) were prepared fully characterized tautomerism was investigated the solid state solution. zinc(II) complexes 1-5 composition [Zn(HLn)2] 1 2), [Zn(HLn)2(H2O)2] 3 5) [Zn(HL4)2]n synthesized by elemental analysis, IR, 1H, 19F, 13C, 15N NMR spectroscopy, ESI...

Two novel three-dimensional metal–organic frameworks (MOFs) based on the photoactive pyrene tetraphosphonate ligand and copper (denoted as IEF-8 IEF-9) have been hydrothermally synthesized fully characterized (XRD, FTIR, TGA, SEM, XPS, etc.). Their crystal structures were unveiled by single-crystal X-ray diffraction. Remarkably, these materials exhibit coordinatively unsaturated (II) sites, free −PO3H2 −PO3H acidic groups, good thermal chemical stability. Further, their optoelectronic...

Siloxanes and silanols containing Si–H units are important building blocks for the synthesis of functionalized siloxane materials, their is a current challenge. Herein, we report selective hydrosilanols, hydrosiloxanes, silanodiols depending on nature catalysts silane used. Two neutral ({MCl[SiMe2(o-C6H4PPh2)]2}; M = Rh, Ir) two cationic ({M[SiMe2(o-C6H4PPh2)]2(NCMe)}[BArF4]; have been synthesized catalytic behavior toward hydrolysis secondary silanes has described. Using iridium complexes...