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1. Crystal Chemistry, Optical Spectroscopy and Crystal Field Calculations of Co 3 TeO 6 and Solid Solutions Co 3-x Zn x TeO 6: Crystal Chemistry, Optical Spectroscopy and Crystal Field Calculations of Co 3 TeO 6 and Solid Solutions Co 3-x Zn x TeO 6

   https://doi.org/10.1002/ejic.201800701  

   Reichartzeder, Dominik ; Wildner, Manfred ; Weil, Matthias ; Ivanov, Sergey ; Stash, Adam ; Chen, Yu-Sheng ( October 2018 , European Journal of Inorganic Chemistry)
2. Crystal Growth and Magnetic Properties of Pr 3 Co 2+x Ge 7 and the Sn-Stabilized Ln 3 Co 2+x Ge 7–y Sn y (Ln = Pr, Nd, Sm)

   https://doi.org/10.1021/acs.cgd.8b00868  

   Khan, Mojammel A. ; McCandless, Gregory T. ; Benavides, Katherine A. ; Martin, Thomas J. ; Palacios, Adzuira M. ; Samuel, Anthony W. ; Young, David P. ; Chan, Julia Y. ( September 2018 , Crystal Growth & Design)
3. Origin of Rapid Delithiation In Secondary Particles Of LiNi 0.8 Co 0.15 Al 0.05 O 2 and LiNi y Mn z Co 1−y−z O 2 Cathodes

   https://doi.org/10.1002/aenm.202300895  

   Wolfman, Mark ; May, Brian M. ; Goel, Vishwas ; Du, Sicen ; Yu, Young‐Sang ; Faenza, Nicholas V. ; Pereira, Nathalie ; Grenier, Antonin ; Wiaderek, Kamila M. ; Xu, Ruqing ; et al ( September 2023 , Advanced Energy Materials)

   Most research on the electrochemical dynamics in materials for high‐energy Li‐ion batteries has focused on the global behavior of the electrode. This approach is susceptible to misleading analyses resulting from idiosyncratic kinetic conditions, such as surface impurities inducing an apparent two‐phase transformation within LiNi_0.8Co_0.15Al_0.05O₂. Here, nano‐focused X‐ray probes are used to measure delithiation operando at the scale of secondary particle agglomerates in layered cathode materials during charge. After an initial latent phase, individual secondary particles undergo rapid, stochastic, and largely uniform delithiation, which is in contrast with the gradual increase in cell potential. This behavior reproduces across several layered oxides. Operando X‐ray microdiffraction (‐XRD) leverages the relationship between Li content and lattice parameter to further reveal that rate acceleration occurs between Li‐site fraction (x_Li) ≈0.9 and ≈0.5 for LiNi_0.8Co_0.15Al_0.05O₂. Physics‐based modeling shows that, to reproduce the experimental results, the exchange current density (i₀) must depend onx_Li, and thati₀should increase rapidly over three orders of magnitude at the transition point. The specifics and implications of this jump ini₀are crucial to understanding the charge‐storage reaction of Li‐ion battery cathodes.

    

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4. Partially Shielded Fe(CO) 3 Rotors: Syntheses, Structures, and Dynamic Properties of Complexes with Doubly trans Spanning Diphosphines, trans -Fe(CO) 3 (PhP((CH 2 ) n ) 2 PPh)

   https://doi.org/10.1021/acs.organomet.7b00330  

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5. Activator-free single-component Co( i )-catalysts for regio- and enantioselective heterodimerization and hydroacylation reactions of 1,3-dienes. New reduction procedures for synthesis of [L]Co( i )-complexes and comparison to in situ generated catalysts

   https://doi.org/10.1039/d2dt01484j  

   Parsutkar, Mahesh M. ; Moore, Curtis E. ; RajanBabu, T. V. ( June 2022 , Dalton Transactions)

   Warren Piers (Ed.)

   Although cobalt( i ) bis-phosphine complexes have been implicated in many selective C–C bond-forming reactions, until recently relatively few of these compounds have been fully characterized or have been shown to be intermediates in catalytic reactions. In this paper we present a new practical method for the synthesis and isolation of several cobalt( i )-bis-phosphine complexes and their use in Co( i )-catalyzed reactions. We find that easily prepared ( in situ generated or isolated) bis-phosphine and (2,6- N -aryliminoethyl)pyridine (PDI) cobalt( ii ) halide complexes are readily reduced by 1,4-bis-trimethylsilyl-1,4-dihydropyrazine or commercially available lithium nitride (Li 3 N), leaving behind only innocuous volatile byproducts. Depending on the structures of the bis-phosphines, the cobalt( i ) complex crystallizes as a phosphine-bridged species [(P∼P)(X)Co I [μ-(P∼P)]Co I (X)(P∼P)] or a halide-bridged species [(P∼P)Co I [μ-(X)] 2 Co I (P∼P)]. Because the side-products are innocuous, these methods can be used for the in situ generation of catalytically competent Co( i ) complexes for a variety of low-valent cobalt-catalyzed reactions of even sensitive substrates. These complexes are also useful for the synthesis of rare cationic [(P∼P)Co I -η 4 -diene] + X − or [(P∼P)Co I -η 6 -arene] + X − complexes, which are shown to be excellent single-component catalysts for the following regioselective reactions of dienes: heterodimerizations with ethylene or methyl acrylate, hydroacylation and hydroboration. The reactivity of the single-component catalysts with the in situ generated species are also documented. 

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