Mixed Ruthenium−Rhodium Carbonyl Cluster Complexes. Synthesis of the Anions [Ru<sub>3</sub>Rh(CO)<sub>13</sub>]<sup>-</sup> and [RuRh<sub>3</sub>(CO)<sub>12</sub>]<sup>-</sup> and Crystal Structures of Their [N(PPh<sub>3</sub>)<sub>2</sub>]<sup>+</sup> Salts<sup>1</sup>
The new anion [Ru(3)Rh(CO)(13)](-) (1) has been obtained by reaction of [Rh(CO)(4)](-) ([N(PPh(3))(2)](+) or [PPh(4)](+) salt) with Ru(3)(CO)(12); [RuRh(3)(CO)(12)](-) (2) has been derived by oxidative degradation of [RuRh(4)(CO)(12)](2-). Their salts, [N(PPh(3))(2)][Ru(3)Rh(CO)(13)] (I) and [N(PPh(3))(2)][RuRh(3)(CO)(12)] (II), were characterized by single-crystal X-ray diffraction. Data for I: space