Results 161 to 170 of about 11,779 (265)

Direct Regioselective para‐Fluorination via I(I)/I(III) Catalysis

open access: yesAngewandte Chemie, EarlyView.
A direct, para‐selective fluorination by I(I)/I(III) catalysis is disclosed that does not require substrate pre‐functionalization. This strategy leverages the Leonard link inherent to phenylpropanoate and phenylpropanamides to promote a spirocyclization/para‐selective sequence. The C3‐side chain maps onto a range of common drug scaffolds and allows the
Christoph Roblick   +5 more
wiley   +1 more source

Short Sb···Sb Contacts in Polymorphic Tris(p‐Tolyl)Antimony: A Hallmark of Organoantimony(III) Solid‐State Chemistry?

open access: yesAngewandte Chemie, EarlyView.
Discovery of polymorphism in solid tris(p‐tolyl)antimony(III) highlighted short, direct antimony‐antimony contacts, with interatomic separation shorter than the sum of the van der Waals radii, and calculated interaction energy of ca. 26 kJ mol−1 that includes a significant dispersion component.
Imogen Suh   +12 more
wiley   +1 more source

Analysis of trade-offs of post-sorting plastic packaging. [PDF]

open access: yesNature
Schmuck A   +5 more
europepmc   +1 more source

Kinetically Stable Boron‐Heteroatom Bonds

open access: yesAngewandte Chemie, EarlyView.
This study investigates the kinetic stability of boron‐heteroatom bonds in N‐methyliminodiacetic acid (MIDA) boronates. The hemilabile nature of the ligand enables the synthesis of molecules that would otherwise be considered too hydrolytically labile. Depending on the structure, acid‐promoted migration of the boryl group was found to produce compounds
Alina Trofimova   +8 more
wiley   +1 more source

Ambiphilic Ligand Stabilization of Aluminum(I) Fragments: Halides, Cations, and a Hydride

open access: yesAngewandte Chemie, EarlyView.
Stabilization of elusive aluminum(I) halides in the framework of an ambiphilic ligand is reported. The unique bonding situation at the trigonal‐bipyramidal aluminum center is analyzed, and the coordination chemistry and Al(I)Br transfer reactivity of the complexes are presented.
Charlotte S. V. Weiß   +1 more
wiley   +1 more source

Chelation Drives Surface Substitution in Hybrid‐MXenes

open access: yesAngewandte Chemie, EarlyView.
We demonstrate ethylenediamine‐derived bidentate binding on Ti3C2 by controlled deprotonation of ─NH2 groups during reaction with Ti3C2Br2. XRD, XPS, ssNMR, STEM, DFT, and INS confirm the bidentate coordination and the superior stability of chelating modes, while AIMD reveals proton transfer and new surface imine–Ti bonding mode.
Vikash Khokhar   +13 more
wiley   +1 more source

Detection of Atmospherically Relevant Mixed Mercuric Compounds by Chemical Ionization Mass Spectrometry. [PDF]

open access: yesACS Earth Space Chem
Bahramsari MB   +5 more
europepmc   +1 more source

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