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1. ⁵⁹ Co Thermal Sensitivity in Co(III) Trisdithiocarbamate Complexes

   https://doi.org/10.1021/acs.inorgchem.4c05385  

   Üngör, Ökten; Termos, Sara; Schurko, Robert W; Zadrozny, Joseph M (April 2025, Inorganic Chemistry)
2. Forging Strong Co–C(sp ² ) Bonds in Co-Macrocycle: Mono- and Bis-Aryl Complexes of Co ^III (TIM)

   https://doi.org/10.1021/acs.organomet.5c00097  

   McGuire, Kyle J; Ebarb, Austin J; Gautam, Prakhar; Ren, Tong (July 2025, Organometallics)
3. Distinct Bimetallic Cooperativity Among Water Reduction Catalysts Containing [Co ^III Co ^III ], [Ni ^II Ni ^II ], and [Zn ^II Zn ^II ] Cores

   https://doi.org/10.1002/chem.202104426  

   Morgan, Fredricka; Schaugaard, Richard; Anderson, Dennis; Schlegel, H_Bernhard; Verani, Cláudio_N (March 2022, Chemistry – A European Journal)

   Abstract Three binuclear species [LCo^III₂(μ‐Pz)₂](ClO₄)₃(1), [LNi^II₂(CH₃OH)₂Cl₂]ClO₄(2), and [LZn^II₂Cl₂]PF₆(3) supported by the deprotonated form of the ligand 2,6‐bis[bis(2‐pyridylmethyl) amino‐methyl]‐4‐methylphenol were synthesized, structurally characterized as solids and in solution, and had their electrochemical and spectroscopic behavior established. Species1–3had their water reduction ability studied aiming to interrogate the possible cooperative catalytic activity between two neighboring metal centers. Species1and2reduced H₂O to H₂effectively at an applied potential of −1.6 V_Ag/AgCl, yielding turnover numbers of 2,820 and 2,290, respectively, after 30 minutes. Species3lacked activity and was used as a negative control to eliminate the possibility of ligand‐based catalysis. Pre‐ and post‐catalytic data gave evidence of the molecular nature of the process within the timeframe of the experiments. Species1showed structural, rather than electronic cooperativity, while species2displayed no obvious cooperativity. DFT methods complemented the experimental results determining plausible mechanisms. 

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4. 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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5. Asymmetry-enhanced ⁵⁹ Co NMR thermometry in Co( iii ) complexes

   https://doi.org/10.1039/D3QI01641B  

   Üngör, Ökten; Sanchez, Stephanie; Ozvat, Tyler M.; Zadrozny, Joseph M. (November 2023, Inorganic Chemistry Frontiers)

   Asymmetric ligands alter the low-energy vibrational spectra of a metal complex and affect the temperature dependence of⁵⁹Co NMR properties. 

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