title: The First Synthesis of the Sterically Encumbered Adamantoid Phosphazane P4 (N(t) Bu)6 : Enabled by Mechanochemistry.
abstract: All reported attempts to synthesize the tert-butyl-substituted adamantoid phosph(III)azane P4 (N(t) Bu)6 have failed, leading to the classification of this molecule as inaccessible and a literature example of steric control in chemistry of phosphorus-nitrogen compounds. We now demonstrate that this structure is readily accessible by a solvent-free mechanochemical milling approach, highlighting the importance of mechanochemical reaction environments in evaluating chemical reactivity.
authors.affiliation: School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore.
authors.forename: Yan X
authors.initials: YX
authors.lastname: Shi
authors.affiliation: School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore.
authors.forename: Kai
authors.initials: K
authors.lastname: Xu
authors.affiliation: School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, QLD, 4072, Australia.
authors.forename: Jack K
authors.initials: JK
authors.lastname: Clegg
authors.affiliation: School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Ganguly
authors.affiliation: School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore.
authors.forename: Hajime
authors.initials: H
authors.lastname: Hirao
authors.affiliation: Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC, H3A 0B8, Canada.
authors.forename: Tomislav
authors.initials: T
authors.lastname: Friščić
authors.affiliation: School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore. fgarcia@ntu.edu.sg.
authors.forename: Felipe
authors.identifier: 0000-0002-9605-3611
authors.initials: F
authors.lastname: García
keywords: green chemistry; main-group chemistry; mechanochemistry; phosphazanes; rearrangements