title: A Fully Phosphane-Substituted Disilene.
abstract: There is growing interest in compounds containing functionalized E=E multiple bonds (E=Si, Ge, Sn, Pb) because of their potential to exhibit novel physical and chemical properties. However, compounds containing multiple functionalizations are rare, with scarcity increasing with increasing degree of substitution. The first ditetrelene R2E=ER2in which the E=E bond is substituted by four heteroatoms (other than Si) is described. The tetraphosphadisilene {(Mes)2P}2Si=Si{P(Mes)2}2(7) is readily isolated from the reaction between SiBr4and [(Mes)2P]Li, the latter of which acts as a sacrificial reducing agent. The structure of 7 is presented, while the bonding in, and stability of 7 were probed using DFT calculations.
authors.affiliation: Main Group Chemistry Laboratories, School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
authors.forename: Keith
authors.identifier: 0000-0003-3882-9343
authors.initials: K
authors.lastname: Izod
authors.affiliation: Main Group Chemistry Laboratories, School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
authors.forename: Peter
authors.identifier: 0000-0002-5916-8786
authors.initials: P
authors.lastname: Evans
authors.affiliation: Main Group Chemistry Laboratories, School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
authors.forename: Paul G
authors.initials: PG
authors.lastname: Waddell
keywords: DFT calculations; crystal structures; multiple bonds; phosphorus; silicon