Hybrid benzidinium lead iodide perovskites with a 1D structure as photoinduced electron transfer photocatalysts

[EN] A hybrid benzidinium lead iodide perovskite (formula: PbI(3)benzidinium(0.5)) (3) with a 1D structure has been synthesized and characterized. The hybrid perovskite exhibits visible light (lambda > 450 nm) photocatalytic activity to promote the photoinduced electron transfer cis-to-trans isomerization of stilbene. The solid photocatalyst undergoes changes in the particle morphology, but maintains the crystallinity.Financial support from the Spanish Ministry of Economy and Competitiveness (Severo Ochoa, and CTQ2015-69563-CO2-R1) and the Generalitat Valenciana (Prometeo 2017/083) is gratefully acknowledged. Yong Peng also thanks the Universitat Politecnica de Valencia for a predoctoral scholarship.Peng, Y.; Albero-Sancho, J.; Alvarez, E.; García Gómez, H. (2019). Hybrid benzidinium lead iodide perovskites with a 1D structure as photoinduced electron transfer photocatalysts. Sustainable Energy & Fuels. 3(9):2356-2360. https://doi.org/10.1039/c9se00182dS235623603

Multinuclear silver(I) XPhos complexes with cyclooctatetraene: photochemical C-C bond cleavage of acetonitrile and cyanide bridged Ag cluster formation

[EN] Cationic mono-, di-, tri-and tetra-nuclear silver complexes with Buchwald-type phosphane (XPhos) and cyclooctatetraene (COT) have been synthesized and characterized. Formation of [(XPhos-Ag) n(COT)][SbF6](n) (n = 1 and 2) complexes was confirmed by single-crystal X-ray crystallography and multinuclear NMR spectroscopy. Variable-temperature NMR spectroscopy in CD2Cl2 solution shows the fluxionality of the COT ring in the mono-Ag(I) XPhos complex. Fluxionality of COT was also confirmed in the case of the di-Ag(I) XPhos complex by solid-state and solution P-31 NMR spectroscopy. The C-C bond cleavage of coordinated acetonitrile [XPhos-Ag(I)-NCCH3] resulting in cyanide bridged Ag cluster formation [(XPhos-Ag)(2)(mu-CN)(n)(mu-Ag)(n-1)] (n = 1, 2, 3 and 4) upon light excitation of [(XPhos-Ag)(n)(COT)] was confirmed by HRESI-MS, UV-Absorption and HR-TEM.Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and CTQ2015-69153-C2-1-R) and Generalidad Valenciana (Prometeo 2013-014) is gratefully acknowledged. We also thank Dr Vidal-Moya J. A. (ITQ) for assistance and discussions on NMR analysis.Grirrane ., A.; Alvarez-González, E.; Albero-Sancho, J.; García Gómez, H.; Corma Canós, A. (2016). Multinuclear silver(I) XPhos complexes with cyclooctatetraene: photochemical C-C bond cleavage of acetonitrile and cyanide bridged Ag cluster formation. Dalton Transactions. 45(13):5444-5450. https://doi.org/10.1039/c6dt00370bS54445450451

Correlation between the Altered Gut Microbiome and Lifestyle Interventions in Chronic Widespread Pain Patients: A Systematic Review

: Background: Lifestyle interventions have a direct impact on the gut microbiome, changing its composition and functioning. This opens an innovative way for new therapeutic opportunities for chronic widespread patients. Purpose: The goal of the present study was to evaluate a correlation between lifestyle interventions and the gut microbiome in patients with chronic widespread pain (CWP). Methods: The systematic review was conducted until January 2023. Pain and microbiome were the two keywords selected for this revision. The search was conducted in PubMed, Chochrane, PEDro and ScienceDirect, where 3917 papers were obtained. Clinical trials with lifestyle intervention in CWP patients were selected. Furthermore, these papers had to be related with the gut microbiome, excluding articles related to other types of microbiomes. Results: Only six articles were selected under the eligibility criteria. Lifestyle interventions were exercise, electroacupuncture and ingesting a probiotic. Conclusions: Lifestyle intervention could be a suitable choice to improve the gut microbiome. This fact could be extrapolated into a better quality of life and lesser levels of pain

Experimental and computational studies of the molybdenum-flanking arene interaction in quadruply bonded dimolybdenum complexes with terphenyl ligands

To clarify the nature of the MoCarene interaction in terphenyl complexes with quadruple MoMo bonds, ether adducts of composition [Mo2(Ar′)(I)(O2CR)2(OEt2)] have been prepared and characterized (Ar′=ArXyl2, R=Me; Ar′=ArMes2, R=Me; Ar′=ArXyl2, R=CF3) (Mes=mesityl; Xyl=2,6‐Me2C6H3, from now on xylyl) and their reactivity toward different neutral Lewis bases investigated. PMe3, P(OMe)3 and PiPr3 were chosen as P‐donors and the reactivity studies complemented with the use of the C‐donors CNXyl and CN2C2Me4 (1,3,4,5‐tetramethylimidazol‐2‐ylidene). New compounds of general formula [Mo2(Ar′)(I)(O2CR)2(L)] were obtained, except for the imidazol‐2‐ylidene ligand that yielded a salt‐like compound of composition [Mo2(ArXyl2)(O2CMe)2(CN2C2Me4)2]I. The MoCarene interaction in these complexes has been analyzed with the aid of X‐ray data and computational studies. This interaction compensates the coordinative and electronic unsaturation of one of the Mo atoms in the above complexes, but it seems to be weak in terms of sharing of electron density between the Mo and Carene atoms and appears to have no appreciable effect in the length of the MoMo, MoX, and MoL bonds present in these molecules

Substitution d'ethers et d'alcools allyliques par differents nucleophiles en presence de complexes de nickel(0) : synthese stereoselective des dienes-1,4 a partir des sulfones dieniques avec le chlorure d'isopropylmagnesium en presence de sels de..

SIGLECNRS T Bordereau / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Olefin epoxidation by hydrogen peroxide catalysed by molybdenum complexes in ionic liquids and structural characterisation of the proposed intermediate dioxoperoxomolybdenum species

3 páginas, 4 figuras, 1 tabla.The complex [Mo4O16(dmpz)6] (1) has been isolated as part of a study of oxodiperoxomolybdenum catalysed epoxidation of olefin substrates with hydrogen peroxide in ionic liquids. Notably, 1 is the first dioxoperoxomolybdenum species to be structurally characterised.This research was supported by the European Commission (Marie Curie Training Network MRTN-CT-2004-504005), the Spanish Ministerio de Ciencia e Innovacion (CTQ2007-61037)and Junta de Andalucia (Proyecto de Excelencia, FQM-02474).Peer reviewe

A supramolecular copper(II) compound with double bridging water ligands: synthesis, crystal structure, spectroscopy, thermal analysis, and magnetism

A complex of composition {[{Cu(NDC)(OH2)(tn)(mu-OH2)}(2)]center dot 2H(2)O}(a) (1) and a mononuclear complex salt [Cu(OH2)(2)(tn)(2)](NDC)center dot 3H(2)O (2), where NDC = 2,6-naphthalenedicarboxylate dianion and tn = 1,3-diaminopropane, were simultaneously crystallized from an aqueous solution of the copper(II) naphthalenedicarboxylate-1,3-diaminopropane-methanol system. The crystal and molecular structures of both complexes were determined by single-crystal X-ray diffraction. Compound (1) consists of a supramolecular coordination complex in which the monomeric unit is assembled from a homodinuclear Cu(II) bridged by two water ligands. The Cu(II) centers exhibit distorted octahedral coordination; the equatorial plane is provided by one chelating tn ligand, one NDC2- ligand, one mu-H2O while the axial positions are occupied by H2O and mu-H2O. Strong intra- and/or intermolecular hydrogen bonds, also involving the crystallization water molecules, together with pi-pi stacking interactions, are involved in building up the supramolecule. The solid structure of compound (2) includes three water molecules of crystallization, the counter ion NDC2-, and a Cu(II) cationic complex in which the metal is six-coordinated in an axially elongated octahedron defined by two chelating tn ligands in the equatorial plane and two water ligands in the axial positions. Thermal analyses of (1) show two significant weight losses corresponding to water molecules (lattice and coordinated), followed by the decomposition of the network