title: Dicubyl disulfide.
abstract: Dicubyl disulfide (1) has been prepared in six steps from commercially available dimethyl-1,4-cubanedicarboxylate in 47% overall yield. In the final step, the previously unknown cubanethiol 2 was oxidized to disulfide 1. X-ray crystallography for 1 reveals the shortest tetragonal C-S bond on record (1.771 A). In contrast to previous generalizations, density functional theory calculations predict a low S-S rotation barrier similar to that for t-BuSSBu-t. Low-temperature (13)C NMR (600 MHz) confirms the prediction.
authors: Department of Chemistry, Emory University, Atlanta, Georgia 30322, USA.
authors: Ronny
authors: R
authors: Priefer
authors: Yoon Joo
authors: YJ
authors: Lee
authors: Fabiola
authors: F
authors: Barrios
authors: Jordan H
authors: JH
authors: Wosnick
authors: Anne-Marie
authors: AM
authors: Lebuis
authors: Patrick G
authors: PG
authors: Farrell
authors: David N
authors: DN
authors: Harpp
authors: Aiming
authors: A
authors: Sun
authors: Shaoxiong
authors: S
authors: Wu
authors: James P
authors: JP
authors: Snyder