Substituent Effects on Ru₃C₂ Clusters: Structural Comparisons of Some μ3-Arylethynyl triruthenium-carbonyl Clusters, [Ru₃(μ-X)(μ₃-C₂Ar)(Y₂)(CO)₇], X = H, or Au(PPh₃), Y₂ = μ-dppm or (CO)₂

Abstract

<jats:title>Abstract</jats:title><jats:p>Complexes of the form [Ru<jats:sub>3</jats:sub>(μ‐H)(μ<jats:sub>3</jats:sub>‐C<jats:sub>2</jats:sub>X)(μ‐dppm)(CO)<jats:sub>7</jats:sub>] have been widely characterized structurally for diverse R = H, <jats:sup>t</jats:sup>Bu, CMePh(OH), CPhCH<jats:sub>2</jats:sub>, C<jats:sub>5</jats:sub>H<jats:sub>7</jats:sub>, C<jats:sub>5</jats:sub>H<jats:sub>6</jats:sub>Me, C<jats:sub>6</jats:sub>F<jats:sub>5</jats:sub>, as well as being studied theoretically. The R = Ph derivative was found to be isotypic with its C<jats:sub>6</jats:sub>F<jats:sub>5</jats:sub> analogue, presenting an unusual opportunity for a comparative structural study, both structures being (re‐)determined at ‘low’‐temperature, whereupon the unit cell of the Ph derivative was found to double. The structure of [AuRu<jats:sub>3</jats:sub>(μ‐C<jats:sub>2</jats:sub>C<jats:sub>6</jats:sub>F<jats:sub>5</jats:sub>)(CO)<jats:sub>9</jats:sub>(PPh<jats:sub>3</jats:sub>)] is also recorded.</jats:p>