The [Re(N)(P\N)] building-block

The formation of the uncommon molecular ion fragment [Re(N)(P\N)] is ESI-MS conditions is confirmed by the synthesis and characterization of the representative [Re(N)Cl2(P\NMe2)PPh3] complex. This species contains the unprecedented [Re(N)(P\NMe2)] moiety which constitutes an additional example of metal-based building-block potentially useful in the design of rhenium radiopharmaceuticals.