Bis(Iminophosphorano)‐Substituted Pyridinium Ions and their Corresponding Bispyridinylidene Organic Electron Donors

Optimized synthetic routes to pyridinium ions featuring two strongly π‐donating R3P=N− substituents are presented. These substituents cause severe disruption in aromaticity in these cations, and also impart exceptional reducing ability to the related bispyridinylidenes (neutral 2 e‐ donors). Preliminary reactivity studies show some enhanced reducing...

22h

Photoredox Catalytic Pentafluorosulfanylative Domino Cyclization of α‐Substituted Alkenes to Oxaheterocycles by Using SF6

Let's play dominoes with SF6 : The photoredox catalytic activation of SF6 in the presence of a‐substituted styrenes and alkynols initiates a reaction sequence that consecutively forms a C−O bond, a C−C bond and a C−SF5 bond, one after another. Finally, this domino reaction yields pentafluorosulfanylated oxygen‐containing heterocycles in a single step....

22h

Click Chemistry in Ultra‐high Vacuum – Tetrazine Coupling with Methyl Enol Ether Covalently Linked to Si(001)

Let it click in UHV: a click chemistry reaction suitable for application under ultra‐high vacuum (UHV) conditions was developed based on enolether/tetrazine coupling. It is orthogonal to the strain‐promoted cycloaddition of cyclooctynes to azides and allows for tailored layer‐by‐layer synthesis on highly reactive semiconductor surfaces such as Si(001)...

22h

Asymmetric Catalytic Approach to Multilayer 3D Chirality

Chirality has existed in nature from the early stages of life on Earth. A new form of chirality, multilayer 3D chirality, has been established involving nearly parallel patterns. This work presents the first asymmetric catalytic approach to multi‐layer 3D chirality. New complexes of Pd and chiral amide‐phosphine ligands were utilized as catalysts for...

22h

CeCoOx core / Nb2O5@TiO2 Double Shell Nanocage Catalyst Demonstrates High Activity and Water Resistance for Catalytic Combustion of O‐dichlorobenzene

In this work, we have successfully prepared a series of catalysts with different core‐shell structures via hydrothermal method. They were consisted of CeCoOx@TiO2 (single shell), CeCoOx@Nb2O5 (single shell) and CeCoOx@Nb2O5@TiO2 (double shell) core‐shell nanocages and CeCoOx nanocages, in which CeCoOx was core and TiO2 and Nb2O5 were shell. Then, the...

22h

Versatile Coordination of Ag(I) and Cu(I) Ions Towards Cyclo‐As5 Ligands

The reactions of the cyclo‑As 5 complex [Cp*Fe(η 5 ‐As 5 )] ( B ) with the Ag(I) and Cu(I) salts of the weakly coordinating anion (WCA) [FAl{OC 6 F 10 (C 6 F 5 )} 3 ] ‾ ([FAl] ‾ ) are studied. These reactions allow the synthesis of the mononuclear complexes [M(η 5 :η 2 ‐ B ) 2 ][FAl] ( M = Ag ( 1 ), Cu (...

22h

Charge Transfer Metal‐Organic Framework Containing the Red‐Ox Active TTF/NDI Units for Highly Efficient Near‐Infrared Photothermal Conversion

Metal‐organic frameworks (MOFs), as a class of new inorganic‐organic hybrid crystal materials, may have important application in near‐infrared (NIR) photothermal conversion. Herein, we obtained a new charge transfer MOF ( Co‐MOF ) with mixed ligands of H 4 TTFTB and bpmNDI incorporating red‐ox active tetrathiafulvalene/naphthalene diimide (TTF/NDI)...

22h

Reentrant Photoinduced Morphological Transformation and Temperature‐Dependent Kinetic Products of a Rectangular‐Shaped Amphiphilic Diarylethene Assembly

An amphiphilic rectangular‐shaped photochromic diarylethene bearing two hydrophobic alkyl chains and two hydrophilic tri(ethylene glycol) chains was synthesized, and its photoinduced morphological transformation in water was investigated. Two unexpected phenomena were revealed in the course of the experiments: a reentrant photoinduced macroscopic morphological...

22h

Highly Selective Ortho‐Directed Dicarboxylation of Cyclopentadiene by Methylcarbonates and CO2 or COS – First Insight into Co‐ordination Chemistry of New Ambident Ligands

A highly regioselective synthesis of 1,2‐dicarboxylated and ‐dithiocarboxylated cyclopentadienide salts [Cat]2[C5H3(CO2)2H] by reaction of organic cation methylcarbonate salts Cat[OCO2Me] (Cat=DMP+, NMe4 +, EMMIm+) with cyclopentadiene or by reaction of CO2/COS with Cat[Cp] (Cat=DMP+, NMe4 +, PPh4 +) was developed. First insight into their coordination...

22h

Forever Young: Structural Stability of Telomeric Guanine Quadruplexes in the Presence of Oxidative DNA Lesions**

The structural stability of guanine quadruplexes in the presence of oxidative lesions is revealed using molecular dynamics simulations, CD spectroscopy and immunofluorescence. Abstract Human telomeric DNA, in G‐quadruplex (G4) conformation, is characterized by a remarkable structural stability that confers it the capacity to resist to oxidative...

22h