A series of neutral alkaline earth metal hydride complexes supported by a bulky, unsymmetrical β-diketiminate ligand, [{(Nacnac)M(μ-H)}] (M = Mg, Ca, Sr or Ba)

A bulky, unsymmetrical β-diketiminate ligand, [HC{MeCN(Dip)}{MeCN(TCHP)}] − ( Dip/TCHP Nacnac; Dip = 2,6-diisopropylphenyl, TCHP = 2,4,6-tricyclohexylphenyl), has been utilised in the preparation of a series of magnesium alkyl and calcium, strontium and barium amide complexes. Reaction of these with...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2024-09, Vol.6 (78), p.1894-1897
Main Authors: Kennedy, Dominic B, Evans, Matthew J, Jones, Dafydd D. L, Parr, Joseph M, Hill, Michael S, Jones, Cameron
Format: Article
Language:English
Subjects:
Alkaline earth metals
Barium
Calcium
Ligands
Magnesium
Metal hydrides
Strontium
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Summary:A bulky, unsymmetrical β-diketiminate ligand, [HC{MeCN(Dip)}{MeCN(TCHP)}] − ( Dip/TCHP Nacnac; Dip = 2,6-diisopropylphenyl, TCHP = 2,4,6-tricyclohexylphenyl), has been utilised in the preparation of a series of magnesium alkyl and calcium, strontium and barium amide complexes. Reaction of these with PhSiH 3 afforded the first complete series of β-diketiminato heavier group 2 metal hydride complexes, [{( Dip/TCHP Nacnac)M(μ-H)} 2 ] (M = Mg, Ca, Sr or Ba). The unsymmetrical nature of the β-diketiminate ligand seemingly promotes stabilising interactions of ligand Dip groups with the metal centres in the Ca, Sr and Ba hydride complexes. A bulky, unsymmetrical β-diketiminate ligand has been used to stabilise the first complete series of β-diketiminato heavier group 2 metal hydride complexes.
ISSN:1359-7345
1364-548X
DOI:10.1039/d4cc04286g