Extended bis‐fused tetrathiafulvalenes incorporating a heteroaromatic π‐electron spacer

New π‐electron donors are being sought for the preparation of organic conductors. The first synthesis of bis‐fused π‐electron donors incorporating a heteroaromatic π‐electron spacer (see Figure) is reported. The electrochemical properties of 3a–c and 4a–c and the crystal structure of 3c are presented, the results for the TCNQ complexes 3a and 4a confirming that the fusion of two donor units is a suitable strategy for the development of highly conducting molecular complexes. magnified image