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1. The EDGE-CALIFA Survey: Spatially Resolved ¹³ CO(1–0) Observations and Variations in ¹² CO(1–0)/ ¹³ CO(1–0) in Nearby Galaxies on Kiloparsec Scales

   https://doi.org/10.3847/1538-4365/acd840  

   Cao, Yixian; Wong, Tony; Bolatto, Alberto D.; Leroy, Adam K.; Rosolowsky, Erik; Utomo, Dyas; Sánchez, Sebastián F.; Barrera-Ballesteros, Jorge K.; Levy, Rebecca C.; Colombo, Dario; et al (August 2023, The Astrophysical Journal Supplement Series)

   Abstract We present¹³CO(J= 1 → 0) observations for the EDGE-CALIFA survey, which is a mapping survey of 126 nearby galaxies at a typical spatial resolution of 1.5 kpc. Using detected¹²CO emission as a prior, we detect¹³CO in 41 galaxies via integrated line flux over the entire galaxy and in 30 galaxies via integrated line intensity in resolved synthesized beams. Incorporating our CO observations and optical IFU spectroscopy, we perform a systematic comparison between the line ratio ${\mathit{}}_{12/13}\equiv I{[}^{12}\mathrm{CO}(J=1\to 0)\left]/I{[}^{13}\mathrm{CO}\right(J=1\to 0\left)\right]$and the properties of the stars and ionized gas. Higher ${\mathit{}}_{12/13}$values are found in interacting galaxies compared to those in noninteracting galaxies. The global ${\mathit{}}_{12/13}$slightly increases with infrared colorF₆₀/F₁₀₀but appears insensitive to other host-galaxy properties such as morphology, stellar mass, or galaxy size. We also present azimuthally averaged ${\mathit{}}_{12/13}$profiles for our sample up to a galactocentric radius of 0.4r₂₅(∼6 kpc), taking into account the¹³CO nondetections by spectral stacking. The radial profiles of ${\mathit{}}_{12/13}$are quite flat across our sample. Within galactocentric distances of 0.2r₂₅, the azimuthally averaged ${\mathit{}}_{12/13}$increases with the star formation rate. However, Spearman rank correlation tests show the azimuthally averaged ${\mathit{}}_{12/13}$does not strongly correlate with any other gas or stellar properties in general, especially beyond 0.2r₂₅from the galaxy centers. Our findings suggest that in the complex environments in galaxy disks, ${\mathit{}}_{12/13}$is not a sensitive tracer for ISM properties. Dynamical disturbances, like galaxy interactions or the presence of a bar, also have an overall impact on ${\mathit{}}_{12/13}$, which further complicates the interpretations of ${\mathit{}}_{12/13}$variations. 

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2. Carbene‐Stabilized Dithiolene (L ⁰ ) Zwitterions

   https://doi.org/10.1002/anie.202108498  

   Wang, Yuzhong; Tran, Phuong M.; Xie, Yaoming; Wei, Pingrong; Glushka, John N.; Schaefer, Henry F.; Robinson, Gregory H. (October 2021, Angewandte Chemie International Edition)
3. Syntheses and crystal structures of the anhydride 4-oxatetracyclo[5.3.2.0 ^2,6 .0 ^8,10 ]dodec-11-ene-3,5-dione and the related imide 4-(4-bromophenyl)-4-azatetracyclo[5.3.2.0 ^2,6 .0 ^8,10 ]dodec-11-ene-3,5-dione

   https://doi.org/10.1107/S2056989020009512  

   Hulsman, Andrew; Lorenzana, Isabel; Schultz, Theodore; Squires, Breezy; Stenfors, Brock A.; Tolonen, Mason; Staples, Richard J.; Biros, Shannon M.; Winchester, William R. (August 2020, Acta Crystallographica Section E Crystallographic Communications)

   null (Ed.)

   The syntheses and crystal structures of the two title compounds, C 11 H 10 O 3 ( I ) and C 17 H 14 BrNO 2 ( II ), both containing the bicyclo[2.2.2]octene ring system, are reported here [the structure of I has been reported previously: White & Goh (2014). Private Communication (refcode HOKRIK). CCDC, Cambridge, England]. The bond lengths and angles of the bicyclo[2.2.2]octene ring system are similar for both structures. The imide functional group of II features carbonyl C=O bond lengths of 1.209 (2) and 1.210 (2) Å, with C—N bond lengths of 1.393 (2) and 1.397 (2) Å. The five-membered imide ring is nearly planar, and it is positioned exo relative to the alkene bridgehead carbon atoms of the bicyclo[2.2.2]octene ring system. Non-covalent interactions present in the crystal structure of II include a number of C—H...O interactions. The extended structure of II also features C—H...O hydrogen bonds as well as C—H...π and lone pair–π interactions, which combine together to create supramolecular sheets. 

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4. Electronic Effects of Aminoindenyl Ligands Coordinated to Manganese: Structures and Properties of a Mn ⁰ Metalloradical and Bimetallic Mn ^–I /Mn ^I Adduct

   https://doi.org/10.1021/acs.organomet.2c00463  

   Tresp, David S.; Neugebauer, Hagen; Grimme, Stefan; Hansen, Andreas; Prokopchuk, Demyan E. (November 2022, Organometallics)
5. Interconversion of Molybdenum or Tungsten d ² Styrene Complexes with d ⁰ 1-Phenethylidene Analogues

   https://doi.org/10.1021/jacs.1c08086  

   Liu, Sumeng; Boudjelel, Maxime; Schrock, Richard R.; Conley, Matthew P.; Tsay, Charlene (October 2021, Journal of the American Chemical Society)