Re2Cl4 (dppm) 22 (μ‐TCNQ), a Novel Charge Transfer Complex Derived from a Donor with a Metal‐Metal Multiple Bond

Black crystals of the title complex are obtained by slow diffusion of THF solutions of Re 2 Cl 4 , (dppm) 2 (ReRe) and tetracyanoquinodimethane (TCNQ). Although their conductivity is only ca. 10 −5 S cm −1 , the magnetic and structural features of this charge transfer complex are remarkable. The bridging of two metal complexes by a TCNQ unit is without precedent. The concept of using metal‐metal multiple‐bond systems as donors for inorganic/organic CT complexes appears viable.