Synthesis and Reactivity of Discrete Calcium Imides.
Protonolysis of dibenzylcalcium with triphenylsilylamine affords a thf-coordinated tetrametallic calcium imide with a heterocuboid core structure. The use of calcium bis(tetramethylaluminate) as a precursor for tandem salt metathesis/protonolysis reactions with alkali metal amides of 2,6-diisopropylaniline and triphenylsilylamine provides access to Lewis acid stabilized monocalcium imides of the type [(thf)4Ca(μ2-NR)(μ2-Me)AlMe2]. Treatment of [(thf)4Ca(μ2-NSiPh3)(μ2-Me)AlMe2] with phenylsilane results in H-Si addition across the Ca-N imido bond, producing a homoleptic calcium amidoaluminate complex and putative CaH2whereas reaction with phenylacetylene leads to protonation of an AlMe moiety to yield the dimeric complex [(thf)Ca{NSiPh3}{AlMe2(CCPh)}]2.
Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
Benjamin M
BM
Wolf
Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany.
Cäcilia
C
Maichle-Mössmer
Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany. reiner.anwander@uni-tuebingen.de.
Reiner
R
Anwander
alkyl groups; aluminum; calcium; imides; protonolysis