Harder Research Group
@harder-research.bsky.social
Organometallic Main Group Metal Chemistry, mainly s- and p-block but nowadays also some d- and f-block. @FAU Erlangen
Fantastic! Good news for Bonn and for Florian. I wish you a happy and fruitful future 👍
We are simply fluored that Florian Kraus (Marburg) will be joining us in Bonn! Florian, we look forward to welcoming you and your group in 2026. Life is about to become alot 99Mo-re F-U-N! #UniBonn #Inorganic
November 7, 2025 at 10:18 AM
Fantastic! Good news for Bonn and for Florian. I wish you a happy and fruitful future 👍
Reposted by Harder Research Group
Rapid Intermolecular C–H Activation of Aromatic Substrates at a Cationic, Electrophilic Molybdenum(VI) Nitrido Complex: Mechanistic Nuance in C–H Amination | Journal of the American Chemical Society pubs.acs.org/doi/full/10....
Very pleased this work is out in JACS. Congrats Dr. Almquist!
Very pleased this work is out in JACS. Congrats Dr. Almquist!
Rapid Intermolecular C–H Activation of Aromatic Substrates at a Cationic, Electrophilic Molybdenum(VI) Nitrido Complex: Mechanistic Nuance in C–H Amination
When the cationic, octahedral terminal nitrido complex of Mo(VI) supported by a diborate pentadentate ligand is generated in the absence of trapping nucleophiles, it activates the C(sp2)–H bonds of si...
pubs.acs.org
October 27, 2025 at 8:21 AM
Rapid Intermolecular C–H Activation of Aromatic Substrates at a Cationic, Electrophilic Molybdenum(VI) Nitrido Complex: Mechanistic Nuance in C–H Amination | Journal of the American Chemical Society pubs.acs.org/doi/full/10....
Very pleased this work is out in JACS. Congrats Dr. Almquist!
Very pleased this work is out in JACS. Congrats Dr. Almquist!
TIRE CHANGE: First Mg(I) complex with a Cp* ligand enables facile ligand exchange. Reaction with RONa gives (BDI)Mg-MgOR and Cp*Na. This paves the way for syntheses of many new asymmetric Mg(I) complexes. @angew_chem onlinelibrary.wiley.com/doi/epdf/10....
October 17, 2025 at 1:11 PM
TIRE CHANGE: First Mg(I) complex with a Cp* ligand enables facile ligand exchange. Reaction with RONa gives (BDI)Mg-MgOR and Cp*Na. This paves the way for syntheses of many new asymmetric Mg(I) complexes. @angew_chem onlinelibrary.wiley.com/doi/epdf/10....
Great cooperation with @KretschmerLab.bsky.social who took the lead. Happy to see that old work from my time in Essen is now published! t.co/gvpPNdCk3i
https://pubs.rsc.org/en/content/articlelanding/2025/dt/d5dt01934f
t.co
October 13, 2025 at 10:04 AM
Great cooperation with @KretschmerLab.bsky.social who took the lead. Happy to see that old work from my time in Essen is now published! t.co/gvpPNdCk3i
REDOX-REACTIVITY of Yb and Sm inverse sandwich benzene complexes. An interesting observation is that, depending on substrate, benzene(4-) can reduce Sm(III) to Sm(II). doi.org/10.1002/chem...
October 8, 2025 at 11:36 AM
REDOX-REACTIVITY of Yb and Sm inverse sandwich benzene complexes. An interesting observation is that, depending on substrate, benzene(4-) can reduce Sm(III) to Sm(II). doi.org/10.1002/chem...
Reposted by Harder Research Group
Hey #ChemSky, need a read to start of the week? How about our latest #OpenAccess research article on ”Silicon-Based Azo Compound-Mediated CO Activation and N2 Release“ out now in @angewandtechemie.bsky.social: doi.org/10.1002/anie...
Silicon‐Based Azo Compound‐Mediated CO Activation and N2 Release
A rare silicon(IV)-based azo compound featuring a Si─N═N─Si linkage was synthesized via the direct reaction of an organoazide with a silaiminyl–silylene precursor. This compound undergoes an unusual ...
doi.org
September 29, 2025 at 9:21 AM
Hey #ChemSky, need a read to start of the week? How about our latest #OpenAccess research article on ”Silicon-Based Azo Compound-Mediated CO Activation and N2 Release“ out now in @angewandtechemie.bsky.social: doi.org/10.1002/anie...
Reposted by Harder Research Group
Check out our latest publication: A Highly Reduced Magnesium Dicobalt Complex for the Hydrogenation of Tri- and Tetra-Substituted Alkenes | Organometallics pubs.acs.org/doi/10.1021/...
A Highly Reduced Magnesium Dicobalt Complex for the Hydrogenation of Tri- and Tetra-Substituted Alkenes
The reaction of [K(thf)0.33][Co(η4-cod)2] (E; cod = 1,5-cyclooctadiene) with 0.5 equiv of MgCl2 led to the isolation of the magnesium dicobalt complex Mg[Co(η4-cod)2]2 (1). Complex 1 forms a tight ionic complex in the solid state and in toluene solution due to electrostatic interactions between the Mg2+ cation and the [Co(η4-cod)2]− anions. The complex is a successful precatalyst for the hydrogenation of sterically challenging tri- and tetra-substituted alkenes, surpassing the catalytic capabilities of related alkali metal and β-diketiminate magnesium complexes.
pubs.acs.org
September 16, 2025 at 10:57 AM
Check out our latest publication: A Highly Reduced Magnesium Dicobalt Complex for the Hydrogenation of Tri- and Tetra-Substituted Alkenes | Organometallics pubs.acs.org/doi/10.1021/...
Reposted by Harder Research Group
Ending the week on a high! Check out our comparison of manganate and magnesiate now published in ChemComm! Great team effort @bathchem.bsky.social with @tobiaskramer.bsky.social in understanding these elusive bimetallics!
A direct comparison of lithium tetra(n-butyl) manganate(II) and magnesiate: structural insights and catalytic hydroamination of styrenes
Previous studies have hinted at the similarities of Mn(II) and Mg alkyl complexes. Advancing this field, here we present a comparative study of tetra(n-butyl) lithium manganate(II) and magnesiate. Com...
pubs.rsc.org
September 5, 2025 at 1:26 PM
Ending the week on a high! Check out our comparison of manganate and magnesiate now published in ChemComm! Great team effort @bathchem.bsky.social with @tobiaskramer.bsky.social in understanding these elusive bimetallics!
Cesium showing its tricks again! Great stuff 👍
The promised watch this space is now online with VIP status
Heavyweight Champion: Caesium Diorganophosphides Outperform Lighter Congeners in Catalytic Hydrophosphination Angewandte Chemie International Edition - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/...
Heavyweight Champion: Caesium Diorganophosphides Outperform Lighter Congeners in Catalytic Hydrophosphination Angewandte Chemie International Edition - Wiley Online Library onlinelibrary.wiley.com/doi/10.1002/...
Heavyweight Champion: Caesium Diorganophosphides Outperform Lighter Congeners in the Catalytic Hydrophosphination of Alkenes and Alkynes
The heavier, the better! We report that the caesium congener is the most active and versatile catalyst amongst a full group set of well-defined crown ether supported alkali metal diphenyl phosphides ...
onlinelibrary.wiley.com
September 11, 2025 at 12:11 PM
Cesium showing its tricks again! Great stuff 👍
CAPTURING CHALCOGENIDES: A soluble Mg(0) metal crown complex reduces and captures chalcogenes. Large anions Se(2-) and Te(2-) need ring enlargement. Highlight: a first molecular s-block metal telluride complex with nearly planar pentacoordinated Te(2-). shorturl.at/n4TUm
September 5, 2025 at 11:08 AM
CAPTURING CHALCOGENIDES: A soluble Mg(0) metal crown complex reduces and captures chalcogenes. Large anions Se(2-) and Te(2-) need ring enlargement. Highlight: a first molecular s-block metal telluride complex with nearly planar pentacoordinated Te(2-). shorturl.at/n4TUm
THIS CHALLENGING SYNTHESIS completes the (BDI)Ae-(benzene)-Ae(BDI) series (Ae = Mg, Ca, Sr, Ba) with Ba. We show trends in stability, structure, bonding and reactivity. Reacting like (BDI)Ba-Ba(BDI) this is the first Ba(I) synthon. shorturl.at/ZdToA @chemicalscience.rsc.org
September 4, 2025 at 11:00 AM
THIS CHALLENGING SYNTHESIS completes the (BDI)Ae-(benzene)-Ae(BDI) series (Ae = Mg, Ca, Sr, Ba) with Ba. We show trends in stability, structure, bonding and reactivity. Reacting like (BDI)Ba-Ba(BDI) this is the first Ba(I) synthon. shorturl.at/ZdToA @chemicalscience.rsc.org
P4 REDUCTION generally results in multi-nuclear Zintl anions: P8(2-), P4(2-) or P7(3-). Reaction with a soluble Mg(0) complex gave full reduction to P(3-). Latter anion serves as a triple base, a three-fold nucleophile or 3e-reducing agent. onlinelibrary.wiley.com/doi/epdf/10.10
September 2, 2025 at 10:31 AM
P4 REDUCTION generally results in multi-nuclear Zintl anions: P8(2-), P4(2-) or P7(3-). Reaction with a soluble Mg(0) complex gave full reduction to P(3-). Latter anion serves as a triple base, a three-fold nucleophile or 3e-reducing agent. onlinelibrary.wiley.com/doi/epdf/10.10
Reposted by Harder Research Group
Liam Griffin and I have reviewed recent advances in the heterometallic bonding chemistry of the alkaline earth metals @daltontrans.rsc.org. It was fun to put this together, and we hope it's useful!
pubs.rsc.org/en/content/a...
pubs.rsc.org/en/content/a...
Alkaline earth metals: heterometallic bonding
The alkaline earth metals are notorious for their tendency to form ionic compounds of their dications. In recent years, however, chemists have found ways to kinetically skirt around the edges of these...
pubs.rsc.org
August 11, 2025 at 9:18 AM
Liam Griffin and I have reviewed recent advances in the heterometallic bonding chemistry of the alkaline earth metals @daltontrans.rsc.org. It was fun to put this together, and we hope it's useful!
pubs.rsc.org/en/content/a...
pubs.rsc.org/en/content/a...
Cool👍
Reversible C–H Bond Activation of Unactivated Arenes by a Nickel-Silylene Complex - pubs.acs.org/doi/10.1021/...
So proud to congratulate first author Leon Gomm for his first paper in JACS. Thanks to Hui Zhu and Stefan Grimme for the ever helpful DFT calculations. @unibonn.bsky.social
So proud to congratulate first author Leon Gomm for his first paper in JACS. Thanks to Hui Zhu and Stefan Grimme for the ever helpful DFT calculations. @unibonn.bsky.social
Reversible C–H Bond Activation of Unactivated Arenes by a Nickel-Silylene Complex
A nickel-silylene complex is shown to reversibly activate benzene via C–H bond activation at ambient temperature. The benzene C–H bond formally adds across the Ni–Si core to form a nickel-silyl comple...
pubs.acs.org
August 10, 2025 at 4:05 AM
Cool👍
Reposted by Harder Research Group
Excited to see this work published today in @jacs.acspublications.org , fun chemistry and a real group effort here by @clairemcmullin.bsky.social , @moraleschem.bsky.social , Mary and big Mike! (@bathchem.bsky.social)
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Arene Activation by Calcium Hydride/Zinc Amide Equilibration
The β-diketiminato calcium hydride, [(BDI)CaH]2 (BDI = HC{(Me)CNDipp}2, where Dipp = 2,6-i-Pr2C6H3), reacts with [Zn{N(SiMe3)2}2] and [Zn(TMP)2] (TMP = 2,2,6,6-tetramethylpiperidide) to provide labile...
pubs.acs.org
August 2, 2025 at 10:16 PM
Excited to see this work published today in @jacs.acspublications.org , fun chemistry and a real group effort here by @clairemcmullin.bsky.social , @moraleschem.bsky.social , Mary and big Mike! (@bathchem.bsky.social)
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Reposted by Harder Research Group
@hbwineinger.bsky.social wrote this review for those interested in low valent f elements #fblockrocks www.sciencedirect.com/science/arti...
Molecular complexes of low-valent f-elements from lanthanum to californium
This review outlines the structure and chemistry of divalent lanthanides and actinides in small molecule systems, focusing on the less accessible diva…
www.sciencedirect.com
July 25, 2025 at 6:39 PM
@hbwineinger.bsky.social wrote this review for those interested in low valent f elements #fblockrocks www.sciencedirect.com/science/arti...
Reposted by Harder Research Group
🔓Read this #OpenAccess work by @coles-lab.bsky.social, @fultonro.bsky.social, Zoë Turner, Dermot O'Hare & co on heavier alkaline earth and heterobimetallic s-block “ate” complexes supported by di(amido)siloxane ligand👀
pubs.rsc.org/en/content/a...
📍 @ox.ac.uk, @vicuniwgtn.bsky.social
#Chemsky 🧪
pubs.rsc.org/en/content/a...
📍 @ox.ac.uk, @vicuniwgtn.bsky.social
#Chemsky 🧪
Heavier alkaline earth and heterobimetallic s-block “ate” complexes of a di(amido)siloxane ligand: solid-state structure and dynamic solution-phase behaviour
The diverse solid-state structures and solution-phase dynamics of both neutral and heterometallic s-block “ate” complexes of the heavier alkaline earth metals (Ae; Ca–Ba) supported by a chelating and…
pubs.rsc.org
March 13, 2025 at 2:01 PM
🔓Read this #OpenAccess work by @coles-lab.bsky.social, @fultonro.bsky.social, Zoë Turner, Dermot O'Hare & co on heavier alkaline earth and heterobimetallic s-block “ate” complexes supported by di(amido)siloxane ligand👀
pubs.rsc.org/en/content/a...
📍 @ox.ac.uk, @vicuniwgtn.bsky.social
#Chemsky 🧪
pubs.rsc.org/en/content/a...
📍 @ox.ac.uk, @vicuniwgtn.bsky.social
#Chemsky 🧪
Reposted by Harder Research Group
Double win and nice to know our research is of interest! Dedicated to the students and collaborators involved in all the hard work. #TopViewedArticle
April 28, 2025 at 10:45 PM
Double win and nice to know our research is of interest! Dedicated to the students and collaborators involved in all the hard work. #TopViewedArticle
Reposted by Harder Research Group
C–C Bond Formation at an Aluminacyclopropane | Organometallics (pubs.acs.org/doi/10.1021/...)
Published as part of Organometallics special issue “Organometallic Chemistry Beyond the Transition Metals:
Fundamentals and Applications of the P-Block”
Published as part of Organometallics special issue “Organometallic Chemistry Beyond the Transition Metals:
Fundamentals and Applications of the P-Block”
C–C Bond Formation at an Aluminacyclopropane
The reactivity of the aluminacyclopropane compound K[Al(NON)(η2-C2H4)] (NON = κN,N’-[O(SiMe2NDipp)2]2–; Dipp = 2,6-iPr2C6H3) toward isocyanides R–NC (R = Cy, Ad, tBu; Cy = cyclohexyl, Ad = 1-adamantyl...
pubs.acs.org
July 21, 2025 at 8:35 PM
C–C Bond Formation at an Aluminacyclopropane | Organometallics (pubs.acs.org/doi/10.1021/...)
Published as part of Organometallics special issue “Organometallic Chemistry Beyond the Transition Metals:
Fundamentals and Applications of the P-Block”
Published as part of Organometallics special issue “Organometallic Chemistry Beyond the Transition Metals:
Fundamentals and Applications of the P-Block”
Reposted by Harder Research Group
Day 4 at #eucomc2025 starts with a feast on #alkalimetalchemistry and the unique perspectives that #Cs offers in catalysis with first #plenary speaker @remglasgow.bsky.social @unistrathclyde.bsky.social #group1metals #theheavierthebetter
July 9, 2025 at 7:28 AM
Day 4 at #eucomc2025 starts with a feast on #alkalimetalchemistry and the unique perspectives that #Cs offers in catalysis with first #plenary speaker @remglasgow.bsky.social @unistrathclyde.bsky.social #group1metals #theheavierthebetter
Today we had Georgii Nikonov visiting. Thx for the lecture and joining us on a Franco Ian-Dutch-Belgian beer road trip🍺🍺🍺
July 8, 2025 at 7:35 PM
Today we had Georgii Nikonov visiting. Thx for the lecture and joining us on a Franco Ian-Dutch-Belgian beer road trip🍺🍺🍺
Reposted by Harder Research Group
Our work on the room-temperature ring-opening of benzene is now published in JACS. Great teamwork and thanks for the kind comments from the reviewers!
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Room Temperature Ring Opening of Benzene by Four-Electron Reduction and Carbonylation
Cleaving a benzene ring under mild conditions requires disrupting its aromaticity, which is a significant challenge in modern chemistry. Although the generation of cyclic products from cleaving benzen...
pubs.acs.org
July 2, 2025 at 3:56 PM
Our work on the room-temperature ring-opening of benzene is now published in JACS. Great teamwork and thanks for the kind comments from the reviewers!
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
A Ca(I) synthon with bridging N2 is key to the synthesis of homometallic Ca peroxide and oxide complexes. In solution, the Ca oxide complex decomposes even at -80 C. It can only be prepared in the solid state. @ChemCommun @RoySocChem shorturl.at/AUoWM
July 4, 2025 at 12:02 PM
A Ca(I) synthon with bridging N2 is key to the synthesis of homometallic Ca peroxide and oxide complexes. In solution, the Ca oxide complex decomposes even at -80 C. It can only be prepared in the solid state. @ChemCommun @RoySocChem shorturl.at/AUoWM
Reposted by Harder Research Group
Thanks very much to Mason Wakley from @chemistryworld.com for this really nice write-up from our latest paper. 🙏🏻
A new dysprosium complex that retains magnetic memory at 100K could drastically reduce the space required to store large amounts of information in modern data centres. #ChemSky
Linear structure gives dysprosium complex record-breaking magnetic properties
A new dysprosium-based single-molecule magnet works at higher temperatures than others in its class
www.chemistryworld.com
July 2, 2025 at 10:35 AM
Thanks very much to Mason Wakley from @chemistryworld.com for this really nice write-up from our latest paper. 🙏🏻
Reposted by Harder Research Group
Zwei ERC Advanced Grants für Forschende der Naturwissenschaftlichen Fakultät! Prof. Dr. Maria Chekhova (Physik) und Prof. Dr. Sjoerd Harder (Chemie) erhalten je 2,5 Mio. Euro Förderung für ihre Projekte zu Quantenlicht und unedlen Metallen.
Mehr Infos: www.nat.fau.de/2025/06/17/z...
Mehr Infos: www.nat.fau.de/2025/06/17/z...
Zwei ERC Advanced Grants für Prof. Dr. Maria Chekhova und Prof. Dr. Sjoerd Harder
Ein erneuter Beweis für die Forschungsstärke am Wissenschaftsstandort Erlangen-Nürnberg: Zwei Forschende der Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) sind jetzt mit jeweils einem der…
www.nat.fau.de
June 17, 2025 at 12:47 PM
Zwei ERC Advanced Grants für Forschende der Naturwissenschaftlichen Fakultät! Prof. Dr. Maria Chekhova (Physik) und Prof. Dr. Sjoerd Harder (Chemie) erhalten je 2,5 Mio. Euro Förderung für ihre Projekte zu Quantenlicht und unedlen Metallen.
Mehr Infos: www.nat.fau.de/2025/06/17/z...
Mehr Infos: www.nat.fau.de/2025/06/17/z...