Attempted metallation of a triamidoaluminane gives a complex containing the [R'Al(NR)3]4- anion whose formal tetranegative charge is the highest charge observed crystallographically for a simple mononuclear imido main group anion system.
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Diverse Multinuclear Alkali Metallated (Li, Na, K, Rb, Cs) Family of the 1,3,5-tris-2-aminopyridyl-2,4,6-triethylbenzene Framework.
Chemistry
January 2025
Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, Campus Universitario, Alcalá de Henares, Madrid, E-28805, Spain.
Literature on Group One organoelement chemistry is dominated by lithium, though sodium and potassium also feature prominently, whereas rubidium and caesium are rarely mentioned. With recent breakthroughs hinting that organoelement compounds of these two heavier metals can perform better than their lighter congeners in particular applications, important advantages could be missed unless complete sets of alkali metals are included in studies. Here, we report the synthesis and characterisation of a complete set of multi-alkali-metallated molecular compounds of the 1,3,5-tris[(4,6-dimethylpyridin-2-yl)aminomethyl]-2,4,6-triethylbenzene framework.
View Article and Find Full Text PDFHeavy Pentaisopropylcyclopentadienyltriylenes and their Heterobimetallic Complexes.
Angew Chem Int Ed Engl
November 2024
Department of Chemistry; Faculty of Natural Sciences and Technology, Saarland University Campus Saarbrücken, 66123, Saarbrücken, Saarland, Germany.
A series of triylenes of the heavy group 13 elements gallium, indium and thallium, carrying the pentaisopropylcyclopentadienyl ligand is reported. The compounds were characterized in solution and in the solid-state and their donor ligand properties in heterobimetallic complexes were investigated, whereby a series of tungsten carbonyl complexes was isolated. Furthermore, a new synthetic route towards a previously described lithium-aluminum heterobimetallic dimetallocene is reported, which also enabled the isolation of a heterobimetallic polydecker of lithium and gallium.
View Article and Find Full Text PDFSyntheses and structures of dimesitylphosphinite complexes of alkali metals and their catalytic activity in hydrophosphorylation reactions.
Dalton Trans
December 2024
Friedrich Schiller University Jena, Institute of Inorganic and Analytical Chemistry, Humboldtstraße 8, D-07743 Jena, Germany.
Metalation of dimesitylphosphane oxide, MesP(O)H (1), with alkali metal reagents (BuLi, NaH, and A(hmds); A = K, Rb, and Cs) in THF yields the corresponding dimesitylphosphinites of lithium (2-thf), sodium (3-thf), potassium (4-thf), rubidium (5-thf), and caesium (6). Their molecular structures exhibit a broad and fascinating variety. Dinuclear compounds 2-thf, 3-thf, and 5-thf have central four-membered AO rings, whereas the potassium congener crystallises as a tetranuclear complex with an inner AO heterocubane cage.
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Chem Asian J
January 2025
College of Science and Engineering, James Cook University,Townsville, Qld, 4811, Australia.
Reaction of lanthanoid tris(3,5-dimethylpyrazolate) compounds, [Ln(Mepz)(thf)] (Ln=La 1 a, Ce, Pr, Dy 1 b, Yb, Lu) with potassium or lithium bistrimethylsilylamide and with or without added 3,5-dimethylpyrazole, or of lanthanoid tris(bistrimethylsilyl)amide complexes with potassium bistrimethylsilylamide and 3,5-dimethylpyrazole have yielded a variety of oxide centred Ln or Ln/(K or Li) multinuclear cages, namely, [LaO(Mepz) K(thf)] (2 a), [LaO(Mepz)Li(MepzH)]⋅0.5Hexane (2 b), [LaO(Mepz)(MepzH)] (2 c) (from heating 1 a in toluene), [CeO(Mepz)K(dme)] (3 a), [CeO(Mepz)Li(thf)]⋅0.5Hexane (3 b) and [Ce(Mepz)Li(thf)] (3 c), which crystallized together, [CeO(Mepz)K(thf)] (3 d), [PrO(Mepz)K(thf)] (4), [DyO(Mepz)K(thf)]⋅THF (5), [YbO(Mepz)K(thf)]⋅THF (6), and [LuO(Mepz)K(thf)]⋅THF (7).
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Inorg Chem
October 2024
Institut für Chemie, Technische Universität Chemnitz, Strasse der Nationen 62, Chemnitz 09111, Germany.
The tetrapyrazolylpyridyl diborate (BPzPy) ligand provides a suitable platform for the isolation of heterobimetallic main-group element compounds as well as homotetrametallic copper complexes. The heterobimetallic tin(II)-lithium(I) () and tin(II)-thallium(I) () complexes have been synthesized, isolated, and fully characterized including single-crystal X-ray diffraction analysis. When reacted with copper(I) sources, complex grants access to a homotetrametallic copper(I) complex ().
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