The reversible protonation of rhenium(VII) heptahydrides of type [ReH7(PR3)2] to give η2-dihydrogen complexes

Abstract
The first examples of the protonation of d0 metal complexes of type [ReH7(PR3)2][PR3= P(cyclohexyl)3, PPh3 or PBut 2Me], to give η2-H2 complexes, are described.