Search results for: Merle Arrowsmith

Items from 1 to 20 out of 71 results

article

Bypassing Ammonia: From N₂ to Nitrogen Heterocycles without N₁ Intermediates or Transition Metals

Marco Weber, Thomas Kupfer, Merle Arrowsmith, Rian D. Dewhurst, more

Angewandte Chemie International Edition > 63 > 21 > n/a - n/a

Diboradiazene compounds, derived in one step from the boron‐mediated reduction of dinitrogen (N₂), were treated separately with sulfur and acetic anhydride, providing heterocyclic compounds that are BN isosteres of thiophene and 1,3‐oxazole, respectively. These simple reactions represent the final steps in two‐step routes to complex heterocycles from N₂ that both circumvent the need for transition...

article

Umgehung von Ammoniak: Von N₂ zu stickstoffhaltigen Heterocyclen ohne N₁‐Zwischenprodukte oder Übergangsmetalle

Marco Weber, Thomas Kupfer, Merle Arrowsmith, Rian D. Dewhurst, more

Angewandte Chemie > 136 > 21 > n/a - n/a

Diboradiazenverbindungen, die in einem Schritt aus einer Bor‐vermittelten Aktivierung von Distickstoff (N₂) stammen, wurden separat mit Schwefel und Essigsäureanhydrid umgesetzt. Hierbei entstanden neuartige heterocyclische Verbindungen, die BN‐Isostere von Thiophen bzw. 1,3‐Oxazol sind. Diese einfachen Reaktionen stellen die letzten Schritte einer zweistufigen Syntheseroute zu komplexen Heterocyclen...

article

Synthesis and Reactivity of a Dialane‐Bridged Diradical

Debabrata Dhara, Lukas Endres, Ivo Krummenacher, Merle Arrowsmith, more

Angewandte Chemie International Edition > 63 > 18 > n/a - n/a

Radicals of the lightest group 13 element, boron, are well established and observed in numerous forms. In contrast to boron, radical chemistry involving the heavier group 13 elements (aluminum, gallium, indium, and thallium) remains largely underexplored, primarily attributed to the formidable synthetic challenges associated with these elements. Herein, we report the synthesis and isolation of planar...

article

Synthesis and Reactivity of Tricoordinate Organoberyllium Azides

Corinna Czernetzki, Tanja Kunz, Silvia Huynh, Anna Lamprecht, more

Angewandte Chemie International Edition > 63 > 18 > n/a - n/a

A series of terminal mono‐ and disubstituted beryllium azides of the form [(CAAC)Be(N₃)R] (R=CAACH, Dur; CAACH/CAAC=1‐(2,6‐diisopropylphenyl)‐3,3,5,5‐tetramethylpyrrolidin‐2‐yl/idene, Dur=2,3,5,6‐tetramethylphenyl) and [L₂Be(N₃)₂] (L=CAACNH=1‐(2,6‐diisopropylphenyl)‐3,3,5,5‐tetramethylpyrrolidin‐2‐imine, IiPr^Me=1,3‐diisopropyl‐4,5‐dimethylimidazol‐2‐ylidene), respectively, were synthesized and characterized...

article

Synthese und Reaktivität eines Dialanverbrückten Diradikals

Debabrata Dhara, Lukas Endres, Ivo Krummenacher, Merle Arrowsmith, more

Angewandte Chemie > 136 > 18 > n/a - n/a

Die Radikale des leichtesten Elements der Gruppe 13, Bor, sind gut bekannt und werden in zahlreichen Formen beobachtet. Im Gegensatz zu Bor ist die Radikalchemie mit den schwereren Elementen der Gruppe 13 (Aluminium, Gallium, Indium und Thallium) noch sehr wenig erforscht, was in erster Linie auf die synthetischen Herausforderungen zurückzuführen ist, die mit diesen Elementen verbunden sind. In diesem...

article

Synthese und Reaktivität dreifach koordinierter Organoberylliumazide

Corinna Czernetzki, Tanja Kunz, Silvia Huynh, Anna Lamprecht, more

Angewandte Chemie > 136 > 18 > n/a - n/a

Eine Reihe terminaler mono‐ und disubstituierter Berylliumaziden der Form [(CAAC)Be(N₃)R] (R=CAACH, Dur; CAACH/CAAC=1‐(2,6‐Diisopropylphenyl)‐3,3,5,5‐tetramethylpyrrolidin‐2‐yl/iden, Dur=2,3,5,6‐Tetramethylphenyl) und [L₂Be(N₃)₂] (L=CAACNH=1‐(2,6‐Diisopropylphenyl)‐3,3,5,5‐tetramethylpyrrolidin‐2‐imin, IiPr^Me=1,3‐Diisopropyl‐4,5‐dimethylimidazol‐2‐yliden) wurden synthetisiert und mittels NMR‐Spektroskopie...

article

Peter Paetzold (1935–2023): a Chemist of Many Talents

Holger Braunschweig, Merle Arrowsmith

Angewandte Chemie International Edition > 63 > 7 > n/a - n/a

Peter Paetzold passed away on August 17, 2023 in Aachen, Germany. One of the great pioneers of low‐valent boron and boron cluster chemistry, he will also be remembered for his outstanding teaching and the passion he brought to all of his many interests beyond research.

article

Peter Paetzold (1935–2023): Ein Chemiker mit vielen Talenten

Holger Braunschweig, Merle Arrowsmith

Angewandte Chemie > 136 > 7 > n/a - n/a

Peter Paetzold verstarb am 17. August 2023 in Aachen. Als einer der großen Pioniere der Chemie des niederwertigen Bors und der Borcluster wird er auch für seine herausragende Lehrtätigkeit und die Leidenschaft, mit der er sich über die Forschung hinaus für all seine zahlreichen Interessen einsetzte, in Erinnerung bleiben.

article

Synthesis, Structural Characterization, and Bonding of Molecular Heavier Beryllium Chalcogenides

Corinna Czernetzki, Tobias Tröster, Lukas Endres, Franziska Endres, more

Chemistry – A European Journal > 29 > 44 > n/a - n/a

The reactions of a cyclic alkyl(amino)carbene (CAAC)‐stabilized beryllium radical with E₂Ph₂ (E=S, Se, Te) and of a beryllole with HEPh (E=S, Se) yield the corresponding beryllium phenylchalcogenides, including the first structurally authenticated beryllium selenide and telluride complexes. Calculations show that their Be−E bonds are best described by the interaction between the Be⁺ and E⁻ fragments,...

article

Thienyl‐Substituted Diboranes(4): Electronic Stabilization of Radicals Versus Increased Reactivity towards Bond Activation

Fabian Schorr, Timo Keim, Merle Arrowsmith, Alfredo Vargas, more

Chemistry – A European Journal > 29 > 40 > n/a - n/a

Low‐valent main group chemistry involves a balancing act between steric and electronic stabilization of the electron‐rich low oxidation state main group centers and their desired reactivity. Herein we show that the combination of sterically shielding mesityl and rotationally flexible 2‐thienyl groups, the latter having the potential to be either electronically stabilizing or activating, at a diborane(4)...

article

Trapping of a Transient Base‐Stabilised Alumylene and Alumylene‐Type Reactivity of a Self‐Stabilising Dialumene towards Organic Azides

Debabrata Dhara, Arumugam Jayaraman, Marcel Härterich, Merle Arrowsmith, more

Chemistry – A European Journal > 29 > 31 > n/a - n/a

The reduction of a carbene‐coordinated, sterically encumbered terphenyl‐substituted aluminium diiodide, (LRAlI₂), yielded a “masked” dialumene (LRAl=AlRL), self‐stabilised through [2+2] cycloaddition with a peripheral aromatic group. During the course of the reaction, a carbene‐stabilised arylalumylene (LRAl:) was generated in situ, which was trapped using an alkyne, generating an aluminacyclopropene...

article

C−C and C−N Bond Activation, Lewis‐Base Coordination and One‐ and Two‐Electron Oxidation at a Linear Aminoborylene

Robert Witte, Merle Arrowsmith, Anna Lamprecht, Fabian Schorr, more

Chemistry – A European Journal > 29 > 16 > n/a - n/a

A cyclic alkyl(amino)carbene (CAAC)‐stabilized dicoordinate aminoborylene is synthesized by the twofold reduction of a [(CAAC)BCl₂(TMP)] (TMP=2,6‐tetramethylpiperidyl) precursor. NMR‐spectroscopic, X‐ray crystallographic and computational analyses confirm the cumulenic nature of the central C=B=N moiety. Irradiation of [(CAAC)B(TMP)] (2) resulted in an intramolecular C−C bond activation, leading to...

article

Aromatic 1,2‐Azaborinin‐1‐yls as Electron‐Withdrawing Anionic Nitrogen Ligands for Main Group Elements

Felix Lindl, Anna Lamprecht, Merle Arrowsmith, Eugen Khitro, more

Chemistry – A European Journal > 29 > 11 > n/a - n/a

The 2‐aryl‐3,4,5,6‐tetraphenyl‐1,2‐azaborinines 1‐EMe₃ and 2‐EMe₃ (E=Si, Sn; aryl=Ph (1), Mes (=2,4,6‐trimethylphenyl, 2)) were synthesized by ring‐expansion of borole precursors with N₃EMe₃‐derived nitrenes. Desilylative hydrolysis of 1‐ and 2‐SiMe₃ yielded the corresponding N‐protonated azaborinines, which were deprotonated with nBuLi or MN(SiMe₃)₂ (M=Na, K) to the corresponding group 1 salts, 1‐M...

article

Modulation of the Naked‐Eye and Fluorescence Color of a Protonated Boron‐Doped Thiazolothiazole by Anion‐Dependent Hydrogen Bonding

Stephan Hagspiel, Felipe Fantuzzi, Merle Arrowsmith, Annalena Gärtner, more

Chemistry – A European Journal > 28 > 49 > n/a - n/a

The reaction of a cyclic alkyl(amino)carbene (CAAC)‐stabilized thiazaborolo[5,4‐d]thiazaborole (TzbTzb) with strong Brønsted acids, such as HCl, HOTf (Tf=O₂SCF₃) and [H(OEt₂)₂][BAr^F₄] (Ar^F=3,5‐(CF₃)₂C₆H₃), results in the protonation of both TzbTzb nitrogen atoms. In each case X‐ray crystallographic data show coordination of the counteranions (Cl⁻, OTf⁻, BAr^F₄⁻) or solvent molecules (OEt₂) to the doubly...

article

Stabile zweibeinige Klavierstuhl‐Carbonyl‐ und gemischte Diborabenzol‐E₄ (E=P, As) Sandwichkomplexe der Gruppe 8

Maximilian Dietz, Merle Arrowsmith, Stephan Reichl, Leonardo I. Lugo‐Fuentes, more

Angewandte Chemie > 134 > 36 > n/a - n/a

Ein cyclisches Alkyl(amino)carben‐stabilisierter 1,4‐Diborabenzol‐Ligand (DBB) ermöglichte die Isolierung von zweibeinigen 18‐Elektronen Klavierstuhl‐Komplexen von Fe⁰ und Ru⁰ der Form [(η⁶‐DBB)M(CO)₂], wobei der Rutheniumkomplex der erste seiner Art ist, der strukturell charakterisiert wurde. [(η⁶‐DBB)Fe(CO)₂] reagierte mit E₄ (E=P, As) unter Ausbildung von gemischten DBB‐cyclo‐E₄‐Sandwichkomplexen...

article

Stable Two‐Legged Parent Piano‐Stool and Mixed Diborabenzene‐E₄ (E=P, As) Sandwich Complexes of Group 8

Maximilian Dietz, Merle Arrowsmith, Stephan Reichl, Leonardo I. Lugo‐Fuentes, more

Angewandte Chemie International Edition > 61 > 36 > n/a - n/a

A cyclic alkyl(amino)carbene‐stabilized 1,4‐diborabenzene (DBB) ligand enables the isolation of 18‐electron two‐legged parent piano‐stool Fe⁰ and Ru⁰ complexes, [(η⁶‐DBB)M(CO)₂], the ruthenium complex being the first of its kind to be structurally characterized. [(η⁶‐DBB)Fe(CO)₂] reacts with E₄ (E=P, As) to yield mixed DBB‐cyclo‐E₄ sandwich complexes with planar E₄²⁻ ligands. Computational analyses...

article

Probing the Boundaries between Lewis‐Basic and Redox Behavior of a Parent Borylene

Merle Arrowsmith, Sara Endres, Myron Heinz, Vincent Nestler, more

Chemistry – A European Journal > 27 > 70 > 17660 - 17668

The parent borylene (CAAC)(Me₃P)BH, 1 (CAAC=cyclic alkyl(amino)carbene), acts both as a Lewis base and one‐electron reducing agent towards group 13 trichlorides (ECl₃, E=B, Al, Ga, In), yielding the adducts 1‐ECl₃ and increasing proportions of the radical cation [1]^•+ for the heavier group 13 analogues. With boron trihalides (BX₃, X=F, Cl, Br, I) 1 undergoes sequential adduct formation and halide...

article

Reactivity of Terminal Iron Borylenes and Bis(borylenes) with Carbodiimides: Cycloaddition, Metathesis, Insertion and C−H Activation Pathways

Alexander Matler, Merle Arrowsmith, Fabian Schorr, Alexander Hermann, more

European Journal of Inorganic Chemistry > 2021 > 45 > 4619 - 4631

The reactions of carbodiimides with the iron arylborylene complex [Fe=BDur(CO)₃(PMe₃)] (Dur=2,3,5,6‐Me₄C₆H) and the iron bis(borylene) complex [Fe{=BDur}{=BN(SiMe₃)₂}(CO)₃] yield a wide variety of temperature‐dependent products, including known FeBNC and novel FeBNB metallacycles, complexes of N‐heterocyclic boracarbene and spiro‐boracarbene ligands and a unique 1,3,2,4‐diazadiborolyl pianostool complex,...

article

Front Cover: Reactivity of Terminal Iron Borylenes and Bis(borylenes) with Carbodiimides: Cycloaddition, Metathesis, Insertion and C−H Activation Pathways (Eur. J. Inorg. Chem. 45/2021)

Alexander Matler, Merle Arrowsmith, Fabian Schorr, Alexander Hermann, more

European Journal of Inorganic Chemistry > 2021 > 45 > 4594 - 4594

The Front Cover shows the wide variety of novel (metalla)heterocycles obtained from the reactions of iron mono‐ and bis(borylene) complexes with carbodiimides. These result from complex branching and interwoven reaction pathways involving successive cycloaddition, metathesis, insertion, and C−H activation steps, dependent on the sterics of the carbodiimide substituents (Graphic design: Dr. Merle Arrowsmith;...

article

Ein neutrales Beryllium(I)‐Radikal

Corinna Czernetzki, Merle Arrowsmith, Felipe Fantuzzi, Annalena Gärtner, more

Angewandte Chemie > 133 > 38 > 20944 - 20948

Durch die Reduktion eines cyclischen Alkyl(amino)carben (CAAC)‐stabilisierten Organoberylliumchlorids konnte das erste neutrale Berylliumradikal erhalten werden, welches durch EPR‐, IR‐ und UV/Vis‐Spektroskopie, Röntgenkristallographie und DFT‐Rechnungen charakterisiert wurde.

Publication date

Last year (8)
Last 3 years (19)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Publication language

English (71)
German (19)

Keywords

BORON (8)
BOR (5)
BORYLENE (5)
DIBORENES (5)
MAGNESIUM (5)
REDUCTION (5)
STRUCTURE ELUCIDATION (5)
BERYLLIUM (4)
CARBENES (4)
CYCLOADDITION (4)
EDA-NOCV (4)
AROMATICITY (3)
BONDING (3)
CYCLISCHE (ALKYL)(AMINO)CARBENE (3)
DIBORANES (3)
DIBORENE (3)
MAIN-GROUP CHEMISTRY (3)
AROMATIZITÄT (2)
BORYL ANION (2)
BORYLENE COMPLEXES (2)
BORYLENES (2)
CALCIUM (2)
CONJUGATION (2)
CYCLIC (ALKYL)(AMINO)CARBENES (2)
DENSITY FUNCTIONAL CALCULATIONS (2)
DENSITY-FUNCTIONAL CALCULATIONS (2)
DFT (2)
DIBORAN (2)
DIBORANE (2)
DIBOREN (2)
HAUPTGRUPPENCHEMIE (2)
HETEROCYCLES (2)
HYDROBORATION (2)
IMINOALANE (2)
INSERTION (2)
MEHRFACHBINDUNGEN (2)
METATHESIS (2)
REACTION MECHANISMS (2)
REARRANGEMENT (2)
REARRANGEMENTS (2)
REDUKTION (2)
REDUKTIONEN (2)
SALT METATHESIS (2)
STRONTIUM (2)
UMPOLUNG (2)
1,2-AZABORININE (1)
1,3,2,4-DIAZADIBORETIDIN-2-YL LIGAND (1)
1,3,2,4-DIAZADIBORETIDIN-2-YL-LIGAND (1)
1,4-DIBORABENZENE (1)
1,4-DIBORABENZOL (1)
A-FRAME COMPLEX (1)
A-FRAME-KOMPLEX (1)
ALKALINE EARTHS METALS (1)
ALKALINE‐EARTH METALS (1)
ALUMYLENE (1)
AMBIPHILE REAKTIVITÄT (1)
AMBIPHILIC REACTIVITY (1)
AMINBORAN-DEHYDROKUPPLUNG (1)
AMINE BORANE DEHYDROCOUPLING (1)
B-N-KUPPLUNG (1)
BERYLLIUM AZIDE (1)
BERYLLIUM CHALCOGENIDE (1)
BERYLLIUMAZID (1)
BINDUNGSSITUATION (1)
BINDUNGSVERHALTEN (1)
BIRADICAL (1)
BIRADICALS (1)
BIRADIKALE (1)
BOND ACTIVATION (1)
BOND DISSOCIATION ENERGIES (1)
BOR-CARBONYLKOMPLEXE (1)
BORANES (1)
BORASELENONE (1)
BORON CARBONYL COMPLEX (1)
BORYL ANIONS (1)
BORYLANION (1)
BORYLANIONEN (1)
BORYLATION (1)
BORYLIERUNGEN (1)
BUTATRIEN-ANALOGON (1)
BUTATRIENE ANALOGUE (1)
B−N COUPLING (1)
C-H-FUNKTIONALISIERUNG (1)
CARBEN (1)
CARBENE (1)
CARBENE COMPLEXES (1)
CARBENKOMPLEXE (1)
CASCADE REACTIONS (1)
CATIONS (1)
CLUSTER COMPOUNDS (1)
CLUSTERVERBINDUNGEN (1)
CO ACTIVATION (1)
CO-AKTIVIERUNG (1)
COPPER (1)
CRYSTALLOGRAPHIC ANALYSES (1)
CRYSTALLOGRAPHIC ANALYSIS (1)
CRYSTALLOGRAPHY (1)
CUMULENE (1)
CYCLIC (ALKYL)(AMINO)CARBENE (1)
CYCLIC ALKYL(AMINO)CARBENE (1)
more

Data set

Wiley (64)
ACS (7)

Journal

Angewandte Chemie (23)
Angewandte Chemie International Edition (23)
Chemistry – A European Journal (16)
Organometallics (6)
European Journal of Inorganic Chemistry (2)
Journal of the American Chemical Society (1)

INFONA - science communication portal

Search results for: Merle Arrowsmith

Bypassing Ammonia: From N₂ to Nitrogen Heterocycles without N₁ Intermediates or Transition Metals

Umgehung von Ammoniak: Von N₂ zu stickstoffhaltigen Heterocyclen ohne N₁‐Zwischenprodukte oder Übergangsmetalle

Synthesis and Reactivity of a Dialane‐Bridged Diradical

Synthesis and Reactivity of Tricoordinate Organoberyllium Azides

Synthese und Reaktivität eines Dialanverbrückten Diradikals

Synthese und Reaktivität dreifach koordinierter Organoberylliumazide

Peter Paetzold (1935–2023): a Chemist of Many Talents

Peter Paetzold (1935–2023): Ein Chemiker mit vielen Talenten

Synthesis, Structural Characterization, and Bonding of Molecular Heavier Beryllium Chalcogenides

Thienyl‐Substituted Diboranes(4): Electronic Stabilization of Radicals Versus Increased Reactivity towards Bond Activation

Trapping of a Transient Base‐Stabilised Alumylene and Alumylene‐Type Reactivity of a Self‐Stabilising Dialumene towards Organic Azides

C−C and C−N Bond Activation, Lewis‐Base Coordination and One‐ and Two‐Electron Oxidation at a Linear Aminoborylene

Aromatic 1,2‐Azaborinin‐1‐yls as Electron‐Withdrawing Anionic Nitrogen Ligands for Main Group Elements

Modulation of the Naked‐Eye and Fluorescence Color of a Protonated Boron‐Doped Thiazolothiazole by Anion‐Dependent Hydrogen Bonding

Stabile zweibeinige Klavierstuhl‐Carbonyl‐ und gemischte Diborabenzol‐E₄ (E=P, As) Sandwichkomplexe der Gruppe 8

Stable Two‐Legged Parent Piano‐Stool and Mixed Diborabenzene‐E₄ (E=P, As) Sandwich Complexes of Group 8

Probing the Boundaries between Lewis‐Basic and Redox Behavior of a Parent Borylene

Reactivity of Terminal Iron Borylenes and Bis(borylenes) with Carbodiimides: Cycloaddition, Metathesis, Insertion and C−H Activation Pathways

Front Cover: Reactivity of Terminal Iron Borylenes and Bis(borylenes) with Carbodiimides: Cycloaddition, Metathesis, Insertion and C−H Activation Pathways (Eur. J. Inorg. Chem. 45/2021)

Ein neutrales Beryllium(I)‐Radikal

Filter options

Publication date

Publication language

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Merle Arrowsmith

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication language

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options