Sequential reactions between a 2,6-diisopropylphenyl-substituted β-diketiminato magnesium n-butyl derivative and P4 allow the highly discriminating synthesis of unusual [nBu2P4](2-) and [nBu2P8](2-) cluster dianions.
Keywords: P4 activation; cluster compounds; magnesium; phosphorus; structure elucidation.
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