Malte Fischer

First post, first publication!
I’m over the moon to share the first publication from our small research group! 🚀 pubs.rsc.org/en/content/a... @chemcomm.rsc.org
Jan explored a funky P=P-containing heterocycle and its reversible! bond activation chemistry, with DFT insights from Francesco. #newPI

Functional Al/Cd Heterometallics─From Controlled Al(I) Transfer to Nucleophilic Transfer of Cadmium Ions Low-valent cadmium compounds have remained largely unexplored as electron reservoirs, with no precedent for their use in reduction or bond activation chemistry. Here, we address this gap by integratin...

Thrilled to share a first publication of the group! We report on cadmium aluminyls that find application as Cd-nucleophiles and(!) Al(I)-Transfer reagents. Now out in @jacs.acspublications.org ! 🥳👍
Thanks a lot to @chemieverband.bsky.social for the generous funding. pubs.acs.org/doi/10.1021/...

Honored to welcome guests from the prestigious Tsinghua University in Beijing tsinghuauniversity.bsky.social for a fruitful exchange with representatives of the Faculty of Chemistry and the CRC 1633 in Göttingen. Many thanks for the inspiring discussions and the successful collaboration!

π‐Complexes of Main‐Group Metal Cations: Exploration of Lewis Acid Reactivity A series of cationic main-group complexes was obtained using the neutral, zwitterionic ligand IDP. The Lewis acidity of these complexes is explored by catalytic hydrophosphinations and halide additio...

Our latest publication reports the successful isolation of π-stabilized tetryliumylidenes [E–X]+ starting from pyramidanes based on a biradicaloid ligand . This milestone was made possible thanks to David’s relentless efforts . Proud of the team!

Did you know that #stannylenes can shine orange and green?
Philipp elucidated the mechanism of the dual #emission, the #excited state #dynamics, #excimer formation and light-induced bond #homolysis. #Maingroup #tin #photophysics #photochemistry onlinelibrary.wiley.com/doi/10.1002/anie.202510044

Kinetic Stabilization in Diaryl-Substituted Stannylenes: N2O Reactivity, Intramolecular C–H Activation, and Crystalline (Eind)Li(THF)2 as a Versatile Precursor in Tin Chemistry The reactivity of the kinetically stabilized stannylene (MesTer)2Sn (1) (MesTer = –C6H3-2,6-(2,4,6-Me3-C6H2)2) toward N2O is revisited, yielding the terminal tin(IV) hydroxide 2 via formal intramolecular C(sp3)–H activation of a putative terminal stannanone intermediate. By switching to Eind ligation (Eind = 1,1,3,3,5,5,7,7-octaethyl-s-hydrindacen-4-yl) at the tin center, the synthesis and characterization of the crystalline lithium salt (Eind)Li(THF)2 (3) is reported, serving as a straightforward precursor for the clean generation of the corresponding stannylene (Eind)2Sn (4). Compound 4 can be further cleanly converted into the heteroleptic Eind/halide stannylene (Eind)SnCl (6). Both 4 and 6 serve as suitable precursors for the synthesis of the heteroleptic s-hydrindacene-/amido-substituted stannylene (Eind)Sn{N(SiMe3)2} (5).

Excited to share our contribution to the special issue "Organometallic Chemistry Beyond the Transition Metals: Fundamentals and Applications of the P-Block" – now published @Organometallics! Check it out 👉 @pubs.acs.org #ChemSky
pubs.acs.org/doi/10.1021/...

Check out Fabio's next paper on the Nature of the Heavy Formal Double Bonds As=Ch, Sb=Ch and Bi=Ch (Ch = S, Se, Te) in NCN-Pincer Supported Arsinidene, Stibinidene and Bismuthinidene Chalcogenides - now published in Chemical Science pubs.rsc.org/en/content/articlelanding/2025/sc/d5sc03320a

Intriguing Reactivity of a 1,2‐Dihydrodialumane Towards Organic Azides – From a Terminal Diazido–Dialumane to Pendulum‐Clock‐Like Azide Bridging The reaction of a dihydro-dialane supported by a hybrid ligand (DNI) with organic azides yields structurally diverse aluminium species, including the first example of low oxidation state aluminium az...

Thrilled of having contributed to this investigation of low-valent aluminium species and their unique reactivity with azides. Great collaboration with the Stalke and Krawczuk groups! onlinelibrary.wiley.com/doi/10.1002/...

Our manuscript on unlocking the ambiphilicity of boryl anions is now published in JACS @jacs.acspublications.org (pubs.acs.org/doi/full/10....)! Chonghe, Junyi, Xibao, and coworkers report the synthesis and reactivity of the first anionic diazoborane! #maingroup #boron @gilliardgroup.bsky.social

LOW-VALENT Si, Ge, Sn, Pb: HOW LOW CAN WE GO???
Hydrocarbon-soluble Mg(0) reduces Si all the way to Si(4-). Unfortunately not stable and decomposing to the HSi(3-) anion. However, Sn(4-) is stable and functions as 4-fold Nu or 8e reducing agent. Preprint: shorturl.at/4mH0O

Isolation of the parent triplet titanocene via NHC stabilisation We present the synthesis and characterization of the parent isolable monomeric triplet titanocene complex, stabilized by the N-heterocyclic carbene (NHC) IMe4. Investigated by SQUID magnetometry and…

🔓Explore recent #OpenAccess work by @maltefischer.bsky.social‬, @townrowresearch.bsky.social‬ and colleagues on the isolation of the parent triplet titanocene via NHC stabilisation🔥

pubs.rsc.org/en/content/a...

📍@unigoettingen.bsky.social‬ and @kit.edu‬
🧪

Rreactivity of Pnictaalumenes towards 1,3-Dipole Molecules fresh out in @angewandtechemie.bsky.social Tim, Edgar and Leonie uncover unique insertion chemsitry giving a plethora of Al,P,N-heterocycles! Again a fruitful collaboration with the Braunschweig Group!

doi.org/10.1002/anie...

Dalton Transactions promotional graphic for the HOT articles collection.

This year's HOT articles collection is now online🔥

This collection represents the top 10% of research published in our journal each quarter. Congratulations to all the authors whose articles are featured in this collection👏

pubs.rsc.org/en/journals/...

#Chemsky 🧪

A Fresh Twist on the Phospha-(Aza)-Wittig Reaction The reactivity of an unsupported phosphinidene oxide, BnArNP═O (Bn = benzyl; Ar = bulky aryl group), as the electrophilic partner in Wittig reactions with ylides is described. Reactions with methylene-triphenylphosphorane (H2C═PPh3) and ethylidene-triphenyl-phosphorane (HMeC═PPh3), proceed as expected, giving rise to the phosphaalkene metathesis products and triphenylphosphine oxide. This reaction can be extended to other ylides such as N-(triphenylphosphoranylidene)methanamine (MeN═PPh3), to afford an aminoiminophosphane BnArNP═NMe. In these reactions the phosphinidene oxide plays the role of an electrophile, which would typically be the remit of an organic carbonyl in classical Wittig reactions. Further mechanistic insight into such transformations can be gained by altering the nature of the phosphorus-ylide. Upon reacting BnArNP═O with H2C═PMe3 (which possesses a smaller, more Lewis basic, phosphine) an alternative product is formed. This transformation supports the formation of a betaine intermediate that subsequently undergoes hydrogen-migration to afford an oxidized phosphorus(V) compound related to phosphorus acid.

Fresh out of the oven. Check out Chenyang’s most recent work in JACS (@jacs.acspublications.org). We explore the reactivity of a phosphinidene oxide as the electrophilic partner in Wittig transformations. Hope you enjoy.

pubs.acs.org/doi/full/10....

Such beautiful chemistry, Ian!😊

Many thanks, Sakya!☺️

Huge congratulations to Jennifer and Navutheya, whose master’s and bachelor’s theses are summarized here, and to Christopher for his outstanding help with SCXRD! 2/2

Carbene-activated stannylenes to access selective C(sp3)–H bond scission at the steric limit - Nature Communications The ubiquity of N-heterocyclic carbenes (NHCs) in chemical research typically arises from their potent stabilizing capabilities and role as innocent spectators to stabilize otherwise non-bottleable co...

Thrilled to share our latest work from the lab, in collaboration with @townrowresearch.bsky.social , exploring the fusion of heteroleptic amido-substituted stannylenes and NHCs! #chemsky www.nature.com/articles/s41... 1/2

Flash Communication: Cyanophosphide Transfer Reactions Cyanophosphides of the general form [RPCN]− can be viewed as cyanide adducts of phosphinidenes and are phosphorus species in the (+1)-oxidation state. We have recently reported on the stable cyanophosphide [DippTerPCN]K (DippTer = 2,6-Dipp2C6H3, Dipp = 2,6-iPrC6H3) and now investigate its reactions with ECln (E = Ge, n = 2; E = P, As, n = 3) in either salt metathesis or base-assisted dehydrohalogenation reactions. In the case of GeCl2, salt metathesis with [DippTerPCN]K afforded the dimer of a chlorogermylene [DippTerP(CN)GeCl]2. When only 0.5 equiv of GeCl2 was used, the diphosphanylgermylene [DippTerP(CN)]2Ge was generated in solution. With ECl3 (E = P, As), facile cyanophosphide transfer was achieved from DippTerP(H)CN in NEt3-assisted dehydrohalogenation, giving diphosphanes or arsaphosphanes of the type DippTerP(CN)ECl2 (E = P, As), respectively.

Ayu is keeping it up! This piece is about ArPCN- transfer to give Germylenes and phosphapnictanes! Thanks @maltefischer.bsky.social and @fabiandankert.bsky.social for their help! Thanks Organomteallics for the smooth proceedings! #31p #phosphorus

pubs.acs.org/doi/10.1021/...

Some new fantastic chemistry from Christian and team!😊

Methane Beryllation Catalyzed by a Base Metal Complex The homogeneous catalytic functionalization of methane is extremely challenging due to the relative nonpolarity and high C–H bond strength of this hydrocarbon. Here, using catalytic quantities (10 mol...

Catalytic methane functionalization and all it takes is... beryllium! We also compare the mechanisms of methane beryllation and borylation to reveal why Be finds it so easy @pubs.acs.org pubs.acs.org/doi/10.1021/...

🚨Two projects out from our lab today (links fixed!)

First up @angewandtechemie.bsky.social

Macro/molecular chemistry of cis/trans P2N4 rings.

Congrats @michaelland.bsky.social w/ @jasonmasuda.bsky.social for Xray

onlinelibrary.wiley.com/doi/10.1002/...

cc @dalchemistry.bsky.social

Thanks a lot, Christian – I'm looking forward to seeing you again in a few days!☺️

Isolation of the parent triplet titanocene via NHC stabilisation We present the synthesis and characterization of the parent isolable monomeric triplet titanocene complex, stabilized by the N-heterocyclic carbene (NHC) IMe4. Investigated by SQUID magnetometry and q...

Our story on stabilizing the parent triplet titanocene with an NHC is out! Congratulations to the entire team – it's great to be back with some Group 4 chemistry!☺️ @daltontrans.rsc.org @townrowresearch.bsky.social #chemsky pubs.rsc.org/en/content/a...

We start our first post on Bluesky with a firework! Very proud of a brilliant team to publish our work on C(sp3)-atom transfer @science.org. www.science.org/doi/10.1126/... It has been a very exciting journey. Thanks @erc.europa.eu

Fully funded 3.5-year PhD studentship! Come and work on alkaline earth metal organometallic chemistry and metal-metal bonding @imperialcollegeldn.bsky.social! More details via the link: www.imperial.ac.uk/chemistry/po...

Huge congratulations, Sadig!😊 Have a good start!

A BNAlP-heterocycle We report the [2+2]-cyclization reaction of a phosphaalumene with its lighter analog, an iminoborane, to give a species with a four-membered BNAlP-heterocycle with alternating Lewis basic and acidic c...

Our first post here.

Tim’s newest work on the reactivity of phosphaalumenes is out. When P=Al meets it’s smaller sibling a unique B,N,Al,P-heterocycle is formed. Congrats Tim and Leonie!
#chemsky @chemcomm.bsky.social @likat.bsky.social #31p

pubs.rsc.org/en/content/a...

Synthesis and Reactivity of an Iron–Tin Complex with Adjacent Stannylidyne and Ferriostannylene Units Heavier transition metal carbyne analogs hold significant potential for cooperative activation of small molecules. However, complexes containing more than one heavier tetrylidyne ligand RE (E = Si, Ge...

Pleased to share our latest work on a reactive iron-tin complex. Congrats to first author Yang Liu and thanks to our collaborators at the Gschwind and Meyer groups @Uni Regensburg and Göttingen! #iron #tin #119Sn #main_group_chemistry
pubs.acs.org/doi/10.1021/...

Thank you very much, Philipp!😊