Faculté des sciences

Tetra- and hexanuclear cage molecules based on diruthenium tetracarbonyl sawhorse units: Synthesis and molecular structure of [{Ru2(CO)4 (PPh3)2}2 (O2CCH2CO2)2] and [{Ru2(CO)4 (PMe3)2}3 (O2CC6H4CO2)3]

Auzias, Mathieu ; Therrien, Bruno ; Süss-Fink, Georg

In: Inorganic Chemistry Communications, 2007, vol. 10, no. 12, p. 1420-1424

The thermal reaction of Ru3 (CO)12 with malonic acid, followed by the addition of the corresponding ligand, yields the tetranuclear ruthenium complexes [{Ru2 (CO) 4L2}2 (O2CCH2CO2)2] (L = PPh3: 1, L = 3,5-Me2NC5H3: 2), while the... Plus

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    Summary
    The thermal reaction of Ru3 (CO)12 with malonic acid, followed by the addition of the corresponding ligand, yields the tetranuclear ruthenium complexes [{Ru2 (CO) 4L2}2 (O2CCH2CO2)2] (L = PPh3: 1, L = 3,5-Me2NC5H3: 2), while the reaction of Ru3 (CO)12 with terephthalic acid, followed by the addition of the corresponding ligand, gives rise to the formation of the hexanuclear ruthenium complexes [{Ru2 (CO)4L2}3 (O2CC6H4CO2)3] (L = PMe3: 3, L = 3,5-Me2NC5H3: 4). The single-crystal X-ray structure analyses for 1 and 3, reveal both cages to consist of Ru2 (CO)4 sawhorse units, 1 being a molecular loop, while 3 is a molecular triangle.