The role of neptunium oxidation states and coordination in shaping XANES spectra at the Np L3 absorption edge This paper presents the results of a comprehensive study of neptunium oxides in oxidation states +4 to +7 using X-ray absorption near-edge spectroscopy (XANES) and theoretical modeling. Based on labor...

Our theoretical and experimental XAS study of neptunium in different oxidation states has been published in Physical Chemistry Chemical Physics.
@pccp.rsc.org
#actinides #XAS
pubs.rsc.org/en/content/a...

Persistent Mono‐Oxo Bonding with Protactinium(V) Revealed in Highly Acidic Chloride Solutions Protactinium(V) defies expectations. Its elusive mono-oxo bond was revealed through a combination of extended X-ray absorption fine structure (EXAFS) and X-ray absorption near-edge structure (XANES) ...

🔬 New chemistry insight: Protactinium(V) shows a stable mono-oxo bond in strongly acidic media, challenging expectations for actinide bonding.

Read more: onlinelibrary.wiley.com/doi/10.1002/...
#Chemistry #Actinides #Research

Homoleptic An(IV) Dimethyl Sulfoxide Complexes of Th–Pu Enable Insight into Solution Speciation and Redox | Inorganic Chemistry pubs.acs.org/doi/10.1021/... Dixon, Wilson, and co-workers @InorgChem #actinides #DMSO #speciation #redox #CV #spectroelectrochemistry #DFT

🚨 Two PhD Opportunities in Actinide Chemistry at @hzdr.bsky.social (Dresden, Germany)
PhD Student – Actinide coordination chemistry lnkd.in/e5y8nwK9
PhD Student – MOFs of the actinides lnkd.in/e2NpT2y8
👉 Apply now and shape the future of actinide chemistry!
#actinides #fblockrocks #chemsky #nuclear

So I'm excited to chat about #nuclear #science, #radioactive waste, #geological disposal #mineralogy and #actinides, to exchange ideas, update on new research developments and hear what you’re up to.

Non–linear bonding trends in maleonitrile-1,2–dithiolate complexes of the transuranium actinides - Nature Communications Although the trivalent actinides are similar to the lanthanide series in terms of chemistry and bonding, their structures and properties can diverge significantly. Here, the authors report a series of...

Super happy to see Nick's article published. #actinides #chemsky #transuranium #nuclear #californium
www.nature.com/articles/s41...

Neptunium (Np3+) has a beautiful alexandrite effect. Left is one lab, center is natural sunlight, and right is a lab under fluorescent lighting. 5f-5f transitions are magical. This is the same solution. Some great pics taken by @jp_brannon #fblockrocks #actinides

Theoretical Exploration of Transplutonium Element Separation by Phosphine Oxide-Functionalized Ligands with Different Backbones | Inorganic Chemistry pubs.acs.org/doi/10.1021/... Wang, Wu, Shi, and co-workers @InorgChem #transplutonium #actinides #PhosphineOxide #DFT #preorganization

Actinide bonding could be tweaked by adjusting oxidation states Modelling reveals that control of mysterious phi bonds could change behaviour of f-block elements

Actinide bonding could be tweaked by adjusting oxidation states #Science #Chemistry #InorganicChemistry #Actinides #OxidationStates #ChemicalBonding

Hey my fellow #criticalmaterials #rare-earths #actinides peeps! Don't forget to submit your abstracts to the 30th Rare Earth Research Conference June 15-19 hosted by ANL. This conference is always a wonderful event and a great way for early career scientists to network. See: www.anl.gov/rerc30

Very happy I could contribute some not-so-easy heavy structures for testing the implementation of core potentials in Hirshfeld-Atom-Refinement.

#QuantumCrystallography #Actinides
#CompChem

Uranium(III) and Uranium(IV) meta-Terphenylthiolate Complexes We report the synthesis and characterization of crystalline m-terphenylthiolate uranium complexes supported by the bulky ligand system, SAriPr6 (SAriPr6 = {SC6H3-2,6-(Tripp)2}; Tripp = 2,4,6-iPr-C6H2)...

Happy to share Ben’s first full research article from his time in the group: pubs.acs.org/doi/10.1021/...

Challenging synthesis and some interesting new main group architectures making an appearance for the first time on an f-element.

#Chemistry #Actinides #f-elements

How things have changed…25 years ago nuclear was dead. Now it’s proudly proclaimed. Even though the color has been altered for the banner, that cone vial contained a sample of actinium used in nuclear medicine. The sample glowed blue. #nuclear #actinium #fblockrocks #actinides #Chemsky #Bluesci

Hello Pu-242 💚✨

#realtimechem #actinides #fblockrocks #plutonium #crystals

@realtimechem.bsky.social @berkeleylab.bsky.social

Structure, Covalency, and Paramagnetism of Homoleptic Actinide and Lanthanide Amidinate Complexes Isostructural trivalent lanthanide and actinide amidinates bearing the N,N’-bis(isopropyl)benzamidinate (iPr2BA) ligand [LnIII/AnIII(iPr2BA)3] (Ln = La, Nd, Sm, Eu, Yb, Lu; An = U, Np) have been synthesized and characterized in both solid and solution states. All compounds were examined in the solid state utilizing single crystal X-ray diffraction (SC-XRD), revealing a notable deviation in the actinide series with shortened bond lengths compared to the trend in the lanthanide series, suggesting a nonionic contribution to the actinide–ligand bonding. Quantum-chemical bonding analysis further elucidated the nature of these interactions, highlighting increased covalency within the actinide series, as evidenced by higher delocalization indices and greater 5f orbital occupation, except for Th(III) and Pa(III), which demonstrated substantial 6d orbital occupancies. An in-depth paramagnetic NMR study in solution also sheds light on the covalent character of actinide–ligand bonding, with the separation of pseudocontact (PCS) and contact shift (FCS) contributions employing the Bleaney and Reilley method. This analysis unveiled significant contact contributions in the actinide complexes, indicating enhanced covalency in actinide–ligand bonding. To corroborate these observations, an accurate PCS calculation method based on the Kuprov equation, incorporating both the distribution of electronic spin density and magnetic susceptibility obtained from CASSCF calculations, was applied and compared with experimental values.

From earlier this year: If you're interested in #actinides and #felements check out Boseok's first and first author paper in InorgChem
#fblockrocks #NMRChat #chemsky #nuclear #openaccess
pubs.acs.org/doi/10.1021/...

Having recently committed the #actinides to memory, I felt that this Autechre track would be an appropriate piece of music to share:
youtu.be/1n_7KgY4X6k?...

What a great way to end the week! U-238 crystals meet Bluesky 🥳🥹

#fblockrocks #chemsky #uranium #actinides

Structural and Theoretical Assessment of Covalency in a Pu(III) Borohydride Complex Despite the discovery of actinide borohydride complexes over 80 years ago, no plutonium borohydride complexes have been structurally validated using single-crystal X-ray diffraction (XRD). Here we des...

New work out with the Daly group and folks at LANL. Rina and Christina did a great job with the calculations. Pu(III) joins the series of characterized An(III) phosphinodiboranates. #chemsky #compchem #actinides #UIowaChem #USDChem pubs.acs.org/doi/10.1021/...