Synthesis and structure of three dichromium hexacarbonyl complexes with (CPPh2)2, (CHPPh2)2, and carbazole bridges

Three dichromium hexacarbonyl complexes containing (CPPh2)2, (CHPPh2)2, and carbazole as a conjugated bridging ligand are synthesized and exhibit a variety of electronic interactions between the metal centers, which can be modified by altering either the conjugated bridging nature or the ligand bound to the metals to induce peculiar asymmetry.