title: Synthesis and structures of [S=(H)P(μ-NR)]2, potential building blocks for inorganic phosphorus-sulfur macrocycles.
abstract: The reactions of the chloro-phosph(iii)azane dimers [ClP(μ-NR)]2 with LiSH give the dimers [S[double bond, length as m-dash](H)P(μ-NR)]2 (), which are potential new building blocks for inorganic macrocycles of the type [{P(μ-NR)}2(μ-S)]n. NMR spectroscopic studies and DFT calculations show that the preference for the cis or trans isomers of is largely influenced by the steric demands of the R-group, with cis isomers being preferred for bulky substituents. This is an important factor in regard to applications in macrocycle synthesis since the cis arrangement is pre-organized for cyclisation.
authors.affiliation: Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge CB2 1EW, UK. dsw1000@cam.ac.uk.
authors.forename: Callum G M
authors.initials: CG
authors.lastname: Benson
authors.forename: Vladislav
authors.initials: V
authors.lastname: Vasilenko
authors.forename: Raúl
authors.initials: R
authors.lastname: García-Rodríguez
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Bond
authors.forename: Silvia
authors.initials: S
authors.lastname: González Calera
authors.forename: Lutz H
authors.initials: LH
authors.lastname: Gade
authors.forename: Dominic S
authors.initials: DS
authors.lastname: Wright