C–H Activation ((gamma)-deprotonation) of a Sm(III) bis(trimethylsilyl)amide complex via macrocyclic stabilisation of the sodium counter ion

The (gamma)-deprotonation of a samarium(III) bis(trimethylsilyl)amide complex derived from a dimetallated trans-dioxaporphyrinogen has been achieved through stabilisation of the counter cation within the macrocyclic cavity.