Inspired from the dirhodium tetraacetate bimetallic salt, synthetic chemists decided to explore the synthesis of paddlewheel mixed heteronuclear bismuth-rhodium salts. The synthesis involves treatment of the [Rh(OCR)] salt with the dibusmuth tetrafluoroacetate [Bi(OCCF)] equivalent. Depending on the nature and sterics of the R ligand, the resulting mixed salt has either two Bu R-substituents resulting in the cis mixed salt or a single Me R-substituent provenient from the dirhodium precursor (see scheme to the right). The mixed salts display increased air and moisture compared to the parental dimetallic salts and show Lewis acidity at the rhodium center.