Fibroblast adhesion and growth behavior were examined on various polymers coated a poly(ethylene telephthalate) (PET) substrate. The are poly[2-methacryloyloxyethyl phosphorylcholine (MPC)-co-n-butyl methacrylate copolymer (PMB)s with different MPC unit compositions, poly(2-hydroxyethyl methacrylate). Surface analysis by dynamic contact angle measurement revealed that the mobility of polymer chain PET substrate depended composition, but there was no significant difference between PMBs 3-10...

Polyoxomolybdates (PMs) as discrete molybdenum-oxide cluster anions have been investigated in the course of study their medical applications. Here, we show significant antitumour potency polyoxomolybdate [Me3NH]6[H2MoV12O28(OH)12(MoVIO3)4]·2H2O (PM-17), which is a photo-reduced compound [NH3Pri]6[Mo7O24]·3H2O. The effect PM-17 on growth cancer cell lines and xenografts was assessed by viability test analysis tumour expansion rate. Morphological carried out Hoechst staining, flow-cytometric...

Spin-frustrated polyoxometalates, K11H[(VO)3(SbW9O33)2]·27H2O (1) and K12[(VO)3(BiW9O33)2]·29H2O (2), containing approximately equilateral isosceles (VO)36+-triangles (VIV···VIV separation of 5.4−5.5 Å) sandwiched by two diamagnetic α-B nonatungstate ligands ([SbW9O33]9- [BiW9O33]9-) with approximate D3h symmetry, are found to show magnetization jumps distinct hysteresis for the S = 1/2 ↔ 3/2 level crossing under fast sweeping pulsed magnetic fields (∼103 T/s) at T ≤ 0.5 K. This unusual...

We report the iridium-catalyzed branch-selective hydroalkylation of simple alkenes such as aliphatic and aromatic with malonic amides esters under neutral reaction conditions. A variety bearing bromine, chlorine, ester, 2-thienylcarboxylate, silyl, phthalimide groups were all found to be suitable for this hydroalkylation. The combination method Krapcho dealkoxycarbonylation realized a one-pot synthesis β-substituted amide ester from β-amide ester. hydroalkylated products derived are further...

Abstract The crystal structure determination of tris(vanadyl)-substituted tungstoantimonate(III) K11H[(VO)3(SbW9O33)2]·27H2O reveals that the [(VO)3(SbW9O33)2]12− anion contains three exterior VO2+ groups sandwiched by two α-B [SbW9O33]9− ligands in VIV···VIV separation 5.411(8)-5.464(8) Å and is stabilized equatorial K+ ions triangle with virtual D3h symmetry. An observable spin-exchange interaction between VIV centers within vanadyl coplanar demonstrated terms S = 1/2 3/2 states.

A sandwich-type polyoxometalate, [Cu(4)(GeW(9)O(34))(2)](12-) (1a), in which two B-alpha-[GeW(9)O(34)](12-) ligands sandwich a rhomblike Cu(4)(8+) tetragon through alpha-Kappaeggin linkage, is first isolated as [n-BuNH(3)](+) salt, [n-BuNH(3)](12)[Cu(4)(GeW(9)O(34))(2)].14H(2)O (1). Cu(4)O(14) cluster for the 1a with C(2h) local symmetry consists of Jahn-Teller (JT) distorted CuO(6) octahedra (at internal sites) short diagonal Cu(int)...Cu(int) distance 3.10-3.11 and CuO(5) square pyramids...

Seven types of different Zn(TPHAP) coordination networks were prepared thanks to the excellent multi-interactivity TPHAP <italic>via</italic> weak intermolecular interactions.

Lacunary polyoxometalates, large inorganic, structure-design-flexible, nanocluster crystals are found to have higher optical nonlinearity than KH2PO4 by the powder second-harmonic-generation method. Moreover, capability of generating ultraviolet radiation down around 300 nm is found. The basic criteria design high also discovered reduction molecular symmetry.

Prolonged photolysis of aqueous solutions containing α-K5[BW12O40]·9H2O 1 and MeOH at pH 0.1 led to the formation diamagnetic six-electron-reduced species K5[BW12O37(H2O)3]·13.5H2O 2, via successive disproportionations between protonated two-electron reduced [H2BW12O40]5–. Single-crystal X-ray diffraction analyses colourless crystals dark brown 2 showed that six electrons contribute a trigonal edge-shared WIV3O13 group α-Keggin framework approximate C3v symmetry. The WIV3 triad contains...

The prolonged UV-photolysis of aqueous solutions containing [Mo7O24]6− and C2H5CO2H (as electron donor) at pH 3.9−4.1 generates the carboxylate-coordinated {Mo132} Keplerate (1a) isolated as a formamidinium/ammonium-mixed salt, [HC(NH2)2]26(NH4)28[MoV60MoVI72O372(H2O)48(C2H5CO2)36(iC3H7CO2)6]·16H2O (1), through Mo-blue intermediate (2). coordination 2 to La3+ gives rise formation chain structure C2-symmetric {Mo96La8} eggshell rings, formulated by...

Abstract The photoreduction processes of α-[PMo12O40]3- (α-PMo12(0)) in aqueous solutions at pH 2.0 are discussed on the basis results electrical conductivities and 31P NMR spectra photolytes, crystal structures α-type two-electron β-type four-electron reduction species isolated from photolytes as α-[(iPr)2NH2]4[HPMo12O40]·4H2O (1) (α-PMo12(II)) β-[(iPr)2NH2]3[H4PMo12O40]·2H2O (2) (β-PMo12(IV)) : (i) A one-electron produced by photoredox reaction α-PMo12(0) with methanol is degraded to...

The long-term photolysis of [iPrNH3]6[Mo7O24]·3H2O in aqueous solutions at pH 5–6 is found to provide the formation anti-tumoral [H2MoV12O28(OH)12(MoVIO3)4]6− species (1a), core which ...

We have found that Suzuki–Miyaura‐type reactions of o ‐allyloxy(bromoethynyl)benzenes with arylboronic acids using a hydrazone/Cu catalyst system proceeded smoothly in i PrOH under mild conditions to afford the corresponding ‐allyloxy(arylethynyl)benzene derivatives good yields without decomposition allyloxy group. further demonstrated annulation and enyne metathesis transition‐metal catalysts led various heterocyclic compounds.

The primary steps of the photoredox reaction between [Mo7O24]6- and carboxylic acid electron (and proton) donors in aqueous solutions are investigated by chemically induced dynamic spin polarization (CIDEP) spectroscopy. excitation O-->Mo ligand-to-metal charge-transfer (LMCT) bands presence CH3CO2H induces emissive (ESP) *CH2CO2 *CH3 radicals with an accompanying formation one-electron reduced species [Mo7O23(OH)]6-, which is demonstrated triplet mechanism involving O --> Mo LMCT states....

An Ir/chiral phosphoramidite complex catalyzes C3-selective asymmetric allylic allylation of 7-azaindoles with secondary racemic alcohols.

Role of spin chirality on magnetization process triangular rings has been studied. A half step magnetization, unexpected for isothermal process, is observed at the level crossing between doubly degenerated S = 1/2 states and excited 3/2 state. The present result substantiates adiabatic change in nano-magnets.

The vanadium‐substituted, Lindqvist‐type polyoxotungstate [VW 5 O 19 ] 3– significantly promotes cyclooctene epoxidation using H 2 in CH 3 CN at 30 °C. catalytic processes discussed are based on the results of UV/Vis, ESI–MS, 51 V NMR, and 183 W NMR spectra a /cyclooctene/CH system. ESI–MS spectral analysis revealed that anion retained structure multiple peroxidation occurred both sites during epoxidation. Together with synergistic effects provided by W(peroxo) sites, V(peroxo) site plays...