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1. Structure and Properties of Na ₂ S–SiS ₂ –P ₂ S ₅ –NaPO ₃ Glassy Solid Electrolytes

   https://doi.org/10.1021/acs.inorgchem.4c00423  

   Olson, Madison; Kmiec, Steven; Riley, Noah; Oldham, Nicholas; Krupp, Kyler; Manthiram, Arumugam; Martin, Steve W (May 2024, Inorganic Chemistry)

   In the development of sodium all-solid-state batteries (ASSBs), research efforts have focused on synthesizing highly conducting and electrochemically stable solid-state electrolytes. Glassy solid electrolytes (GSEs) have been considered very promising due to their tunable chemistry and resistance to dendrite growth. For these reasons, we focus here on the atomic-level structures and properties of GSEs in the compositional series (0.6–0.08y)Na2S + (0.4 + 0.08y)[(1 – y)[(1 – x)SiS2 + xPS5/2] + yNaPO3] (NaPSiSO). The mechanical moduli, glass transition temperatures, and temperature-dependent conductivity were determined and related to their short-range order structures that were determined using Raman, Fourier transform infrared, and 31P and 29Si magic angle spinning nuclear magnetic resonance spectroscopies. In addition, the conductivity activation energies were modeled using the Christensen–Martin–Anderson–Stuart model. These GSEs appear to be highly crystallization-resistant in the supercooled liquid region where no measurable crystallization below 450 °C could be observed in differential scanning calorimetry studies. Additionally, these GSEs were found to be highly conducting, with conductivities on the order of 10–5 (Ω cm)−1 at room temperature, and processable in the supercooled state without crystallization. For all these reasons, these NaPSiSO GSEs are considered to be highly competitive and easily processable candidate GSEs for enabling sodium ASSBs. 

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2. Borafluorene-Mediated Sulfur Activation: Isolation of Boryl-Linked S ₇ and S ₈ Catenates and Related Chalcogenide Molecules

   https://doi.org/10.1021/acs.inorgchem.4c02459  

   Frey, Nathan C; Hollister, Kimberly K; Müller, Peter; Dickie, Diane A; Webster, Charles Edwin; Gilliard, Robert J (September 2024, Inorganic Chemistry)
3. The Global Mode-1 S ₂ Internal Tide: THE S ₂ INTERNAL TIDE

   https://doi.org/10.1002/2017JC013112  

   Zhao, Zhongxiang (November 2017, Journal of Geophysical Research: Oceans)
4. Fluorogenic hydrogen sulfide (H ₂ S) donors based on sulfenyl thiocarbonates enable H ₂ S tracking and quantification

   https://doi.org/10.1039/c8sc05200j  

   Zhao, Yu; Cerda, Matthew M.; Pluth, Michael D. (February 2019, Chemical Science)

   Hydrogen sulfide (H 2 S) is an important cellular signaling molecule that exhibits promising protective effects. Although a number of triggerable H 2 S donors have been developed, spatiotemporal feedback from H 2 S release in biological systems remains a key challenge in H 2 S donor development. Herein we report the synthesis, evaluation, and application of caged sulfenyl thiocarbonates as new fluorescent H 2 S donors. These molecules rely on thiol cleavage of sulfenyl thiocarbonates to release carbonyl sulfide (COS), which is quickly converted to H 2 S by carbonic anhydrase (CA). This approach is a new strategy in H 2 S release and does not release electrophilic byproducts common from COS-based H 2 S releasing motifs. Importantly, the release of COS/H 2 S is accompanied by the release of a fluorescent reporter, which enables the real-time tracking of H 2 S by fluorescence spectroscopy or microscopy. Dependent on the choice of fluorophore, either one or two equivalents of H 2 S can be released, thus allowing for the dynamic range of the fluorescent donors to be tuned. We demonstrate that the fluorescence response correlates directly with quantified H 2 S release and also demonstrate the live-cell compatibility of these donors. Furthermore, these fluorescent donors exhibit anti-inflammatory effects in RAW 264.7 cells, indicating their potential application as new H 2 S-releasing therapeutics. Taken together, sulfenyl thiocarbonates provide a new platform for H 2 S donation and readily enable fluorescent tracking of H 2 S delivery in complex environments. 

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5. Examination of the structures, energetics, and vibrational frequencies of small sulfur‐containing prototypical dimers, (H ₂ S) ₂ and H ₂ O/H ₂ S

   https://doi.org/10.1002/jcc.25578  

   Dreux, Katelyn M.; Tschumper, Gregory S. (October 2018, Journal of Computational Chemistry)

   The optimized geometries, vibrational frequencies, and dissociation energies from MP2 and CCSD(T) computations with large correlation consistent basis sets are reported for (H₂S)₂and H₂O/H₂S. Anharmonic vibrational frequencies have also been computed with second‐order vibrational perturbation theory (VPT2). As such, the fundamental frequencies, overtones, and combination bands reported in this study should also provide a useful road map for future spectroscopic studies of the simple but important heterogeneous H₂O/H₂S dimer in which the hydrogen bond donor and acceptor can interchange, leading to two unique minima with very similar energies. Near the CCSD(T) complete basis set limit, the HOH⋯SH₂configuration (H₂O donor) lies only 0.2 kcal mol⁻¹below the HSH⋯OH₂structure (H₂S donor). When the zero‐point vibrational energy is included, however, the latter configuration becomes slightly lower in energy than the former by <0.1 kcal mol⁻¹. © 2018 Wiley Periodicals, Inc. 

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