Results 11 to 20 of about 2,630 (129)

Yttrium Complexes with Group 13 Heterobenzene‐Type Ligands

Chemistry – A European Journal, Volume 29, Issue 65, November 21, 2023., 2023
The gallabenzene‐type yttrium complex [(1‐Me‐3,5‐tBu2−C5H3Ga)(μ‐Me)Y(2,4‐dtbp)] (A) is readily formed from one‐pot‐reactions using mixtures [YMe3]n/GaMe3/K(2,4‐dtbp) (2,4‐dtbp=2,4‐di‐tert‐butyl‐pentadienyl), while the remaining pentadienyl ligand gets easily displaced by pentamethylcyclopentadienyl affording B, showcasing the strong interaction of the ...
Jakob Lebon, Damir Barisic, Cäcilia Maichle‐Mössmer, Reiner Anwander   +3 more
wiley   +1 more source

Distinct Reactivity of Trimethylytterbium toward AlMe3 and GaMe3: Synthesis of Donor‐Stabilized Dimethylytterbium

Chemistry – A European Journal, Volume 29, Issue 23, April 21, 2023., 2023
Donor‐stabilized dimethylytterbium: Readily available donor‐stabilized trimethylytterbium reacts with AlMe3 under reduction via a methyl radical pathway to divalent bis(tetramethylaluminato) ytterbium. Contrary to this, addition of GaMe3 affords trivalent adduct [(Me3TACN)YbMe2(μ‐Me)GaMe3], which reacts with KC8 in THF to the first donor‐stabilized ...
Alexandros Mortis, Cäcilia Maichle‐Mössmer, Reiner Anwander   +2 more
wiley   +1 more source

Crystallographic Characterisation of Organolithium and Organomagnesium Intermediates in Reactions of Aldehydes and Ketones

Helvetica Chimica Acta, Volume 105, Issue 9, September 2022., 2022
Abstract We report reactions of LiNacNac and NacNacMg(TMP) with common organic substrates (TMP=2,2,6,6‐tetramethylpiperidide). Using bulky β‐diketiminate compound NacNac (Me, Dipp), we have trapped metalated intermediates amenable to X‐ray crystallographic study.
Jennifer R. Lynch, Alan R. Kennedy, Jim Barker, Jacqueline Reid, Robert E. Mulvey   +4 more
wiley   +1 more source

Molecular Ln(III)−H−E(II) Linkages (Ln=Y, Lu; E=Ge, Sn, Pb)

Chemistry – A European Journal, Volume 28, Issue 45, August 10, 2022., 2022
Reductive alkane elimination reacting the aryltin trihydride Ar*SnH3 with donor free alkyl complexes [Cp*2Ln(CH{SiMe3}2)] (Ln=Y, Lu) in the presence of diethyl methylamine gives access to Ln(III)−H−Sn(II) linkages. The respective germanium and lead entities can be generated via exchange of hydrido‐bridged dimers [(Ar*EH)2] (E=Ge, Pb) and [(Cp*2Ln(μ‐H)2]
Max Widemann, Frederik S. W. Aicher, Martin Bonath, Klaus Eichele, Cäcilia Maichle‐Mössmer, Hartmut Schubert, Peter Sirsch, Reiner Anwander, Lars Wesemann   +8 more
wiley   +1 more source

Half‐Sandwich Complexes [Cp′4Ln4I8]4 (Ln=Ce, Pr):Emergence of Donor‐Free Organolanthanide Nanowheels

European Journal of Inorganic Chemistry, Volume 2022, Issue 1, January 11, 2022., 2022
Tetramethylaluminato/halogenido exchange in half‐sandwich complexes [Cp′Ln(AlMe4)2] utilizing mild halogenido transfer reagents gives access to spherical {Ln12} clusters (depicted, Cp′ omitted) and {Ln16} ring‐cluster hybrids. The transformations are governed by ion size (Ln3+, Hal−) and the reaction control (stirring versus diffusion).
Dennis A. Buschmann, David Schneider, Cäcilia Maichle‐Mössmer, Reiner Anwander   +3 more
wiley   +1 more source

Oxidative Addition of Secondary Phosphine Oxides through Rh(I) Center: Hydrido‐Phosphinito‐Rh(III) Complexes and their Catalytic Activity in Hydrophosphinylation of Alkynes

European Journal of Inorganic Chemistry, Volume 2021, Issue 47, Page 4935-4945, December 21, 2021., 2021
Hydrido‐phosphinito‐Rh(III) complexes have been synthesized via oxidative addition of secondary phosphine oxides. These unusual complexes proved to be stable by the formation of a hydrogen bonded phosphinous acid‐phosphinito quasi‐chelate [(PO⋅⋅⋅HOP)‐κ2P]. Hydrophosphinylation of phenylacetylene has been studied using the new complexes as precatalysts.
Naroa Almenara, Montserrat Barquin, Miguel A. Huertos, María A. Garralda   +3 more
wiley   +1 more source

Chiral Chromium(III) Complexes as Promising Candidates for Circularly Polarized Luminescence

ChemPhotoChem, Volume 5, Issue 10, Page 880-892, October 2021., 2021
Chromium wins the race? In the search for cheap circularly polarized luminescence probes with high quantum yields and high dissymmetry factors, chiral inert chromium(III) complexes are in the race due to recent drastic improvements. This minireview surveys the chiroptical properties of this class of compounds.
Maxime Poncet, Amina Benchohra, Juan‐Ramón Jiménez, Claude Piguet   +3 more
wiley   +1 more source

High‐Spin Iron(VI), Low‐Spin Ruthenium(VI), and Magnetically Bistable Osmium(VI) in Molecular Group 8 Nitrido Trifluorides NMF3

Chemistry – A European Journal, Volume 27, Issue 45, Page 11693-11700, August 11, 2021., 2021
In different states: Molecular hexavalent group 8 nitrido fluorides feature different electronic ground‐state d2 configurations in solid Ne matrices. While NFeF3 adopts a high symmetry structure, the heavier homologues are subject to symmetry lowering and spin‐crossover caused by a pseudo Jahn−Teller effect “hidden” in the excited states. For NOsF3 two
Tony Stüker, Xiya Xia, Helmut Beckers, Sebastian Riedel   +3 more
wiley   +1 more source

Effective and Reversible Carbon Dioxide Insertion into Cerium Pyrazolates

Angewandte Chemie, Volume 132, Issue 14, Page 5879-5885, March 27, 2020., 2020
Schwamm für CO2: Cer‐Pyrazolate ermöglichen die Insertion von Kohlendioxid, wobei sich die Komplexe [CeIII4(Me2pz⋅CO2)12] und [CeIV(Me2pz⋅CO2)4] bilden. Die Insertion ist reversibel und kann für die katalytische Bildung von cyclischen Carbonaten aus Epoxiden genutzt werden.
Uwe Bayer, Daniel Werner, Cäcilia Maichle‐Mössmer, Reiner Anwander   +3 more
wiley   +2 more sources

Simulation and operation of a spray dryer for the production of sodium pentaborate [PDF]

, 2014
Se realiza el estudio experimental de las condiciones de operación de un secadero spray para la obtención de pentaborato de sodio. Se determina la cantidad de agua a evaporar, la temperatura de la solución a alimentar, y las temperaturas de entrada y ...
Bisonard, Eduardo, Flores, Jorge, Velasco, Jorge Wilfredo, Villaflor, Gloria del Valle   +3 more
core   +2 more sources