An Inverted-Sandwich Diuranium μ-η⁵:η⁵-Cyclo-P₅ Complex Supported by U-P₅ δ-Bonding.

ABSTRACT: Reaction of [U(Tren^TIPS)] [1, Tren^TIPS=N(CH₂CH₂NSiiPr₃)₃] with 0.25 equivalents of P₄ reproducibly affords the unprecedented actinide inverted sandwich cyclo-P₅ complex [{U(Tren^TIPS)}₂(μ-η⁵:η⁵-cyclo-P₅)] (2). All prior examples of cyclo-P₅ are stabilized by d-block metals, so 2 shows that cyclo-P₅ does not require d-block ions to be prepared. Although cyclo-P₅ is isolobal to cyclopentadienyl, which usually bonds to metals via σ- and π-interactions with minimal δ-bonding, theoretical calculations suggest the principal bonding in the U(P₅)U unit is polarized δ-bonding. Surprisingl

SUBMITTER: Gardner BM 

PROVIDER: S-EPMC4955234 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature