Paper

Dalton Trans., 2009, 106 - 110, DOI: 10.1039/b815854a

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Aluminium, zinc, gallium, and cadmium complexes supported by a monoanionic [N₂P₂] ligand

Stefan G. Minasian and John Arnold

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Metal–halide complexes of main-group metals Al, Ga, Zn, and Cd supported by the new sterically and electronically versatile monoanionic ligand, ^tBuN(H)SiMe₂N(CH₂CH₂PⁱPr₂)₂, H[N₂P₂], are described. The metal–alkyl complex [N₂P₂]AlMe₂ ( 4) was prepared by two metathesis reactions of [N₂P₂]AlCl₂ ( 1) and 2MeLi, as well as [N₂P₂]Li and Me₂AlCl. All compounds were characterized by standard analytical techniques; in addition, [N₂P₂]AlCl₂ ( 1), [N₂P₂]GaCl₂ ( 3), and [N₂P₂]CdCl₂ ( 6) were characterized by single-crystal X-ray crystallography. The potentially tetradentate ligand enforces a tetrahedral geometry at each metal by adopting two coordination modes: ²-NP (Al, Ga) and ³-NP₂ (Cd).

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