Correction: One-pot synthesis of a new generation of hybrid bisphosphonate polyoxometalate gold nanoparticles as antibiofilm agents

[This corrects the article DOI: 10.1039/C9NA00401G.].

One-pot synthesis of a new generation of hybrid bisphosphonate polyoxometalate gold nanoparticles as antibiofilm agents

A reduced polyoxovanadate functionalized with bisphosphonate molecules was synthesized and used to prepare in one step hybrid organic-inorganic polyoxometalate decorated gold nanoparticles. These new composites were shown to strongly inhibit P. aeruginosa and S. epidermidis biofilm growth, with the three components constituting the nanoparticles (Au0 core, vanadium and alendronate) acting synergistically.

Construction of enantioenriched polysubstituted hexahydropyridazines via a sequential multicatalytic process merging palladium catalysis and aminocatalysis

An efficient multicatalytic strategy for the construction of nitrogen-containing heterocycles has been reported. The powerful combination of organic and metal catalysis in a single vessel allowed the formation of enantioenriched polysubstituted cyclic 6-membered hydrazines bearing a quaternary stereocenter in good yields and selectivities.

Synthesis of homopropargylamines from 2-cyanoazetidines

Mild generation of vinylidene carbene from α-amino nitrile is the basis of a new synthesis of homopropargylamines.

3D shapes of aryl(dihydro)naphthothiophenes: a comprehensive and structural study

Convenient access to new aryl(dihydro)naphthothiophenes is described using a common β-chloroacrolein derivative. Our strategy is based on the construction of a condensed thiophene ring prior to a Suzuki-Miyaura coupling and allowed installing various substituents at the molecular platform. The overall shapes of these architectures were confirmed by X-ray analyses and were in good agreement with theoretical calculations. It has been established that the relative orientation between all fragments that composed molecules within this series is strongly related to both steric and electronic factors. Contribution of these key parameters revealed to be crucial to rationalize attempts to prepare fluorenone and fluorene derivatives from aryl(dihydro)naphthothiophene platforms.

N- and C-alkylation of seven-membered iminosugars generates potent glucocerebrosidase inhibitors and F508del-CFTR correctors

The synthesis and biological evaluation of a library of novel seven-membered iminosugars is reported.

A microporous scandium terephthalate, Sc2(O2CC6H4CO2)3, with high thermal stability

A scandium terephthalate with isolated ScO6 octahedra and fully-linked carboxylate groups is prepared hydrothermally and possesses a novel hybrid framework structure with high thermal stability and a pore volume for N2 adsorption of 0.26 cm(3) g(-1) at 77 K.

VIII(OH){O2C–C6H4–CO2}.(HO2C–C6H4–CO2H)x(DMF)y(H2O)z (or MIL-68), a new vanadocarboxylate with a large pore hybrid topology : reticular synthesis with infinite inorganic building blocks?

V(III)(OH)[O(2)C-C(6)H(4)-CO(2)].(HO(2)C-C(6)H(4)-O(2)H)(x)(DMF)(y)(H(2)O)(z) or MIL-68 was solvothermally synthesised in a non-aqueous medium. Its structure, built up from octahedral chains connected by terephthalate linkers, exhibits large hexagonal channels containing different occluded moieties. Their irreversible removal releases a specific surface area of 603(22) m(2).g(-1)(BET).

Structural characterization and magnetic properties of sandwich-type tungstoarsenate complexes. Study of a mixed-valent VIV2/VV heteropolyanion

Complexes K11Na1[As2W18(Mn(H2O))3O66]x27H2O (1) and Na12[As2W18(Co(H2O))3O66]x34H2O (2) have been characterized. 1 crystallizes in the orthorhombic space group Pnma, with a = 30.6484(4) A, b = 14.9946(2) A, and c = 19.17080(10) A (Z = 4), while 2 crystallizes in the monoclinic space group C2/c, with a = 14.124(2) A, b = 23.294(3) A, c = 32.247(3) A, and beta = 98.935(10) degrees (Z = 4). Structures of the anions of 1 and 2 are similar, the divalent metals adopting a square pyramidal environment. K11[As2W18(VO)3O66]x23H2O (3) crystallizes in the orthorhombic space group Pnma, with a = 30.6240(5) A, b = 14.9861(2) A, and c = 19.2651(3) A (Z = 4). The structure has revealed a disorder on two of the three metals linking the [alpha-AsW9O33]9- parts. For these two vanadium atoms, the V=O bonds are directed alternatively toward the inside or the outside of the [alpha-AsW9O33]9- cavity. The remaining vanadium shows a V=O bond always directed toward the outside of the cavity. Titration of VIV by CeIV revealed that 3 is the mixed-valent VIV2VV species. Magnetic measurements are in agreement with this formulation. The high-temperature molar magnetic susceptibility of a powdered sample of 3 clearly confirms the presence of two d1 centers. The two VIV are antiferromagnetically coupled, with J = -2.9 cm-1 and g = 1.93. Crystallographic data do not permit the location of the two VIV to be distinguished from the location of the VV. As expected, the Mn(II) are very weakly antiferromagnetically coupled in compound 1. The complex Na8[Ni(H2O)6]2[As2W18(Ni(H2O))3O66]x20H2O (4) has been synthesized. The anion crystallized with two octahedral [Ni(H2O)6]2+ as counterions. Magnetic data have been fitted assuming that the only exchange-coupled centers are the nickels of the polyanion. 4 exhibits an antiferromagnetic coupling with J = -1.7 cm-1, g = 2.27, and theta = -1.5 K.