Understanding and tuning the catalytic properties of metals atomically dispersed on oxides are major stepping-stones towards a rational development of single-atom catalysts (SACs). Beyond individual showcase studies, the design and synthesis of structurally regular series of SACs opens the door to systematic experimental investigations of performance as a function of metal identity. Herein, a series

We report herein a strategy to construct enantiopure inherently chiral macrocycles, ABCD-type heteracalix[4]aromatics, through a catalytic enantioselective intramolecular C-N bond forming reaction. A chiral ligand-palladium complex was found to efficiently induce the inherent chirality of molecules during macrocyclization process with ee values up to >99%. The resulting ABCD-type heteracalix[4]aromatics

The dimeric diketopiperazine (DKPs) alkaloids are a diverse family of natural products (NPs) whose unique structural architectures and biological activities have inspired the development of new synthetic methodology to access these molecules. However, catalyst-controlled methods that enable the selective formation of constitutional and stereoisomeric dimers from a single monomer are lacking. To resolve

The bias and temperature dependence of both dark and photo-induced currents in carbon based molecular junctions were examined over a wide range of oligomeric layer thickness (d) from 4 to 60 nm. The dark current density vs bias (JV) response of nitroazobenzene molecular junctions exhibits the exponential thickness dependence consistent with coherent tunneling when d<5 nm, but becomes weakly dependent

Acid effects on the chemical properties of metal–oxygen intermediates have attracted much attention recently, such as the enhanced reactivity of high-valent metal(IV)‒oxo species by binding proton(s) or Lewis acidic metal ion(s) in redox reactions. Herein, we report for the first time the proton effects of an iron(V)‒oxo complex bearing a negatively charged tetraamido macrocyclic ligand (TAML) in oxygen

Fluorescent base analogs (FBAs) are powerful probes of nucleic acids’ structures and dynamics. However, previously reported FBAs exhibit relatively low brightness and therefore limited sensitivity of detection. Here we report the hitherto brightest FBA that has ideal molecular rotor properties for detecting local dynamic motions associated with base pair mismatches. The new trans-stilbene annulated

EPR and Electron Nuclear Double Resonance spectroscopies here characterize CO binding to the active-site A cluster of wild-type (WT) Acetyl-CoA Synthase (ACS) and two variants, F229W and F229A. The A-cluster binds CO to a proximal Ni (Nip) that bridges a [4Fe-4S] cluster and a distal Nid. An alcove seen in the ACS crystal structure near the A-cluster, defined by hydrophobic residues including F229

Page 18385. Mohammed Enamul Hoque of the Department of Chemistry and Biochemistry, Kent State University, was inadvertently omitted from the list of authors. The author list should read as follows: Shankar Pandey,† Dilanka V. D. Walpita Kankanamalage,‡ Xiao Zhou,‡ Changpeng Hu,† Mohammed Enamul Hoque,† Lyle Isaacs,§ Janarthanan Jayawickramarajah,*,‡ and Hanbin Mao*,†,∥ This article has not yet been

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