Synthesis of discrete Re(i) di- and tricarbonyl assemblies using a [4 × 1] directional bonding strategy

Abstract

Discrete self-assembly of two Re(I) squares was achieved by a simple and efficient strategy where the complexes, [Re(4-pytpy-κ²N)(CO)₃Br] and [Re(4-pytpy-κ³N)(CO)₂Br], act as their own ligands. The photophysical and electrochemical properties of the assemblies and their precursors are described along with solid-state X-ray diffraction studies.