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The size-dependent and shape-dependent characteristics that distinguish nanoscale materials from bulk solids arise from constraining the dimensionality of an inorganic structure1?3. As a consequence, many studies have focused on rationally shaping these materials to influence and enhance their optical, electronic, magnetic and catalytic properties4?6. Although a select number of stable clusters can typically be synthesized within the nanoscale regime for a specific composition, isolating clusters of a predetermined size and shape remains a challenge, especially for those derived from two-dimensional materials. Here we realize a multidentate coordination environment in a metal?organic framework to stabilize discrete inorganic clusters within a porous crystalline support. We show confined growth of atomically defined nickel(ii) bromide, nickel(ii) chloride, cobalt(ii) chloride and iron(ii) chloride sheets through the peripheral coordination of six chelating bipyridine linkers. Notably, confinement within the framework defines the structure and composition of these sheets and facilitates their precise characterization by crystallography. Each metal(ii) halide sheet represents a fragment excised from a single layer of the bulk solid structure, and structures obtained at different precursor loadings enable observation of successive stages of sheet assembly. Finally, the isolated sheets exhibit magnetic behaviours distinct from those of the bulk metal halides, including the isolation of ferromagnetically coupled large-spin ground states through the elimination of long-range, interlayer magnetic ordering. Overall, these results demonstrate that the pore environment of a metal?organic framework can be designed to afford precise control over the size, structure and spatial arrangement of inorganic clusters.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is an experimental science, SDS of cas: 1802-30-8, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid

Two novel 1-D copper complexes {[CuII 2(Hbpdc) 2]Cl2}22H2O (1) and Cu I(H2bpdc)Cl (2) (H2bpdc = 2,2′- bipyridyl-5,5′-dicarboxylic acid) have been one-pot hydrothermally synthesized by reaction of H2bpdc, CuCl2?2H2O, PrCl3 and glacial acetic acid and structurally characterized by IR spectroscopy, X-ray photoelectron spectroscopy and single-crystal X-ray diffraction. Single-crystal structural analyses show that 1 is a novel 1-D stair-like chain constructed from centric tetra-copper clusters {[Cu II2(Hbpdc)2]Cl2}2 by means of Cu-O weak coordination interactions whereas 2 displays a 1-D comb-like chain built by [CuI(H2bpdc)Cl] units through Cl- bridges. More interestingly, 1 and 2 were one-pot hydrothermally synthesized, which is very rare in synthetic chemistry. The photofluorescence properties of 1 and 2 have been investigated.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is traditionally divided into organic and inorganic chemistry. HPLC of Formula: C12H8N2O4. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1802-30-8

A simplified procedure for the isolation of gram quantities of illudin M from culture broths of basidiomycete Omphalotus olearius is described. Esters of illudin M with docosahexaenoic acid, chlorambucil, demethylcantharidinic acid (endothall) and 2,2?-bipyridyl-5,5?-dicarboxylic acid were synthesised and tested for cytotoxicity and induction of apoptosis in two clinically relevant tumour cell lines (Panc-1 pancreas carcinoma and HT-29 colon carcinoma) and in non-malignant human foreskin fibroblasts. The demethylcantharidin and the bipyridine conjugates retained the cytotoxicity of the parent illudin M while displaying an improved specificity for the tumour cells over the fibroblasts.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1802-30-8, molcular formula is C12H8N2O4, introducing its new discovery. Quality Control of: 2,2′-Bipyridine-5,5′-dicarboxylic acid

The invention discloses a fluorescence probe and its preparation method and application, the fluorescent probe of the chemical structure of formula (1) shown containing 2, 2 – bipyridyl, hydrazide and phenol groups and bases, the probe is dissolved in the water – in dimethyl sulfoxide solution, with the Al3 + The increase of the concentration, system fluorescence intensity in the 500 nm at the fluorescent intensity is notably enhanced, and the aluminum ion gives greater low detection limit of 9 nm; copper ion outer, trivalent chromium with the trivalent iron plasma system fluorescence spectrum does not produce interference; this probe also has synthetic routes simplified, high yield, easy to use, and is suitable for practical application, biological detection environment improvement field has wide application prospect. (by machine translation)

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1802-30-8, name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, introducing its new discovery. Product Details of 1802-30-8

Ultrafast electron transfer in the dye sensitized solar cell (DSSC) has made it possible to use iron(II) polypyridyl complexes as photosensitizers [J. Am. Chem. Soc. 120 (1998) 843]. Although ruthenium(II) polypyridyl complexes comprise an extensively studied and widely utilized photochemical system, comparatively little is known about the photoproperties of their iron analogues. The syntheses and solution properties of the complexes [FeII(L)2(CN)2] and [FeIIL3] for a series of L, where L is a 2,2?-bipyridine derivative, are presented here. We compare the solvatochromism of [FeII(4,4?-dicarboxylic acid-2,2?-bipyridine)2(CN)2] to [FeII(4,4?-dimethyl-2,2?-bipyridine)2(CN) 2] and discuss general trends in the electrochemistry and absorption properties within the series. The solvatochromism of these complexes is discussed in terms of their use in a dye sensitized TiO2 solar cell.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 1802-30-8 is helpful to your research. Product Details of 1802-30-8

Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 1802-30-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, molecular formula is C12H8N2O4. In a Article，once mentioned of 1802-30-8

The first ‘one-pot’ asymmetric synthesis of ruthenium tris(bipyridine) derivatives starting from corresponding racemic ruthenium bis(bipyridine) complexes is described. This is achieved through the stereocontrolled formation of reactive intermediates derived from (R)-(+)- or (S)-(-)-methyl p-tolyl sulfoxide, which can be easily converted to the products with a retention of configuration at the metal center. (C) 2000 Elsevier Science Ltd.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Product Details of 1802-30-8, Which mentioned a new discovery about 1802-30-8

High-yield syntheses of Cu(II)- and Ni(II)-templated [2]pseudorotaxane precursors (CuPRT and NiPRT, respectively) were achieved by threading bis(azide)bis(amide)-2,2-bipyridine axle into a bis(amide)tris(amine) macrocycle. Single-crystal X-ray structural analysis of CuPRT revealed complete threading of the axle fragment into the wheel cavity, where strong aromatic pi-pi stacking interactions between two parallel arene moieties of the wheel and the pyridyl unit of axle are operative in addition to metal ion templation. Attachment of a newly developed bulky stopper molecule with a terminal alkyne to CuPRT via a Cu(I)-catalyzed azide-alkyne cycloaddition reaction failed as a result of dethreading of the azide-terminated axle under the reaction conditions. However, the synthesis of a metal-free [2]rotaxane containing triazole with other functionalities in the axle was achieved in ?45% yield upon coupling between azide-terminated NiPRT and the alkyne-terminated stopper. The [2]rotaxane was characterized by mass spectrometry, 1D and 2D NMR (COSY, DOSY, and ROESY) experiments. Comparative solution-state NMR studies of the [2]rotaxane in its unprotonated and protonated states were carried out to locate the position of the wheel on the axle of the metal-free [2]rotaxane. Furthermore, a variable-temperature 1H NMR study in DMSO-d6 of [2]rotaxane supported the kinetic inertness of the interlocked structure, where the newly developed stopper prevents dethreading of the 30-membered wheel from the axle.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is traditionally divided into organic and inorganic chemistry. Computed Properties of C12H8N2O4. The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1802-30-8

New luminescent isomeric europium(III) complexes with carboxylic carbonyl group coordination (I and II) have been prepared by solvothermal synthesis using the ligand 2,2?-bipyridine-4,4?-dicarboxylic acid (bpdc), with the nonradiatively shielded Eu3+ coordination sphere completed by dimethyl sulfoxide ligands. The room temperature IR spectra and Eu3+ luminescence spectra do not provide a definitive distinction between I and II, but low-temperature luminescence can give a clear identification.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 1802-30-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid, molecular formula is C12H8N2O4. In a Patent，once mentioned of 1802-30-8

Biheteroaryl dicarboxylates and esters, and salts thereof which are useful as modulators of CP4H activity and more particularly as inhibitors of CP4H. Compounds of formula: and salts thereof where: X is S, O, NH, or NR, where R is an alkyl group having 1-3 carbon atoms; R1 and R2 independently are ?OR7, or ?NHSO2R8, where R7 is selected from: hydrogen, alkyl, alkenyl, alkoxyalkyl, ?R??CO?R?, ?R??CO?O?R?, ?CO?R?, ?R??O?CO?R?, ?R??CO?NR?, ?CO?NR?, or ?R??O?CO?NR?, and R8 is selected from hydrogen, alkyl, aryl, arylalkyl; R3, R4 and R6 independently are hydrogen, alkyl, alkoxy, alkenyl, alkenoxy, halo alkyl, haloalkenyl, halogen, hydroxyl, hydroxyalkyl, hydroxyalkenyl, aryl, aryloxy, arylalkyl or arylalkyloxy; R5 is hydrogen, halogen, alkyl having 1-3 carbon atoms, or alkoxy having 1-3 carbon atoms; ?R?? is a divalent straight chain or branched alkylene, and ?R? is an alkyl, alkenyl, arylalkyl, or aryl group. Methods for inhibition of CP4H in vivo and in vitro.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is an experimental science, name: 2,2′-Bipyridine-5,5′-dicarboxylic acid, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 1802-30-8, Name is 2,2′-Bipyridine-5,5′-dicarboxylic acid

The reaction of solvent substituted MoO2X2(S) 2 (X = Cl, S = THF; X = Br, S = DMF) complexes with one equivalent of bidentate nitrogen donor ligands at room temperature leads within a few minutes to the quantitative formation of complexes of the type [MoO2X 2L2] (L = 4,4?-bis-methoxycarbonyl-2,2?- bipyridine, 5,5?-bis-methoxycarbonyl-2,2?-bipyridine, 4,4?-bis-ethoxycarbonyl-2,2?-bipyridine, 5,5?-bis- ethoxycarbonyl-2,2?-bipyridine). Treatment of the complexes [MoO 2Cl2L2] with Grignard reagents at low temperatures yields dimethylated complexes of the formula [MoO 2(CH3)2L2]. [MoO2Br 2(4,4?-bis-ethoxycarbonyl-2,2?-bipyridine)], [MoO 2Br2(5,5?-bis-methoxycarbonyl-2,2?-bipyridine) ] and [MoO2Br2(5,5?-bis-ethoxycarbonyl-2,2?- bipyridine)] have been exemplary examined by single crystal X-ray analysis. The complexes were applied as homogenous catalysts for the epoxidation of cyclooctene with tert-butyl hydroperoxide (TBHP) as oxidising agent under solvent-free conditions. The complexes containing L = Cl have been additionally investigated with room temperature ionic liquids (RTILs) as solvents. The catalytic activity of the [MoO2X2L2] complexes in olefin epoxidation with tert-butyl hydroperoxide is on average very good. The main advantage of the synthesised complexes in comparison to previously reported complexes is their high solubility. This good solubility is apparently the reason that the catalytic potential of the compounds can unfold. The turnover frequencies (TOFs) in RTILs are even higher, showing the performance of the catalysts under optimised conditions.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. name: 2,2′-Bipyridine-5,5′-dicarboxylic acid, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1802-30-8, in my other articles.

Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI