2018
DOI: 10.1021/acs.inorgchem.8b02510
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Influence of Chain Length on the Structures and Dynamic Behavior of Alkyl-Tethered α,ω-Diphosphide Complexes of Lithium and Their Use in the Synthesis ofP-Heterocyclic Stannylenes

Abstract: The alkyl-tethered α,ω-diphosphines (Dipp)­PH­(CH2) n PH­(Dipp) (n = 1 (3H), 2 (4H), 3 (5H), 4 (6H), and 5 (7H)) were prepared in good yield and characterized by multinuclear NMR spectroscopy [Dipp = 2,6-iPr2C6H3]. Treatment of 3H with 2 equiv of nBuLi and 2 equiv of TMEDA gives the diphosphide complex [CH2{P­(Dipp)}2]­Li2(TMEDA)2 (3Lia), which crystallizes as discrete monomers which do not exhibit temperature-dependent NMR behavior. Treatment of 4H–7H with 2 equiv of nBuLi in THF gives the diphosphides [[CH2{… Show more

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