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Therrien, Bruno
Nom
Therrien, Bruno
Affiliation principale
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Professeur titulaire
Email
bruno.therrien@unine.ch
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Voici les éléments 1 - 2 sur 2
- PublicationAccès libreTetra- 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](2007)
; 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. - PublicationAccès libreRu2(CO)4(OOCR)2(PPh3)2 sawhorse-type complexes containing μ2-η2-carboxylato ligands derived from biologically active acids(2006)
; The thermal reaction of Ru3(CO)12 with the biologically active acids acetyl salicylic acid (Aspirin), α-methyl-4-(isobutyl)phenylacetic acid (Ibuprofen) and 3α,7α,12α-trihydroxy-5β-cholanic acid (cholic acid) in refluxing tetrahydrofuran, followed by addition of triphenylphosphine, gives the dinuclear complexes Ru2 (CO) 4(OOCR)2(PPh3)2 (1: R = C6H4-2-OCOMe, 2: R = CHMe-C6H4-4-Bui, 3: C23H39O3). The single-crystal structural analysis of 1 and 2 reveals a dinuclear Ru2(CO)4 sawhorse structure, the diruthenium backbone being bridged by the carboxylato ligands, while the two phosphine ligands occupy the axial positions at the ruthenium atoms. However, chiral carbon atoms in the carboxylic acid undergo racemisation during the thermal reaction.