title: Mo/Rh carboxylate: heterometallic compound built of homometallic paddlewheel units.
abstract: Mixed-metal molybdenum(II)/rhodium(II) tetra(trifluoroacetate) of the composition [(MoRh)(O2CCF3)4] has been obtained from the gas-phase reaction between volatile carboxylates, [Mo2(O2CCF3)4] and [Rh2(O2CCF3)4]. This is an interesting system for which a single-crystal X-ray investigation fails to provide an unambiguous evidence of whether the product consists of the initial homometallic or newly formed heterometallic paddlewheel units. In the solid-state structure both metal atoms occupy the same crystallographic position, while the M-M and M-O distances are averaged with respect to the parent homometallic compounds. Nevertheless, the results of mass-spectrometric and magnetic measurements clearly indicate that the title bimetallic carboxylate contains a statistical mixture of homometallic dimolybdenum and dirhodium units. The product can be considered as a result of cocrystallization of isomorphous paddlewheel molecules.
authors: Department of Chemistry, University at Albany, Albany, NY 12222, USA.
authors: Bo
authors: B
authors: Li
authors: Haitao
authors: H
authors: Zhang
authors: Lan
authors: L
authors: Huynh
authors: Mikhael
authors: M
authors: Shatruk
authors: Evgeny V
authors: EV
authors: Dikarev