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Synthesis and Characterization of New Water‐Soluble Hydrides of Ru II : A Step towards Dinitrogen Activation?
Author(s) -
Loy Maxime,
Laurenczy Gábor
Publication year - 2005
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200590038
Subject(s) - tppts , chemistry , phosphine , aqueous solution , hydride , ruthenium , inorganic chemistry , catalysis , nuclear magnetic resonance spectroscopy , molecule , medicinal chemistry , stereochemistry , organic chemistry , metal , hydroformylation , rhodium
The basic aqueous coordination chemistry of Ru II has been studied using the catalytically important TPPTS phosphine (TPPTS=trisodium salt of 3,3′,3″‐phosphinetriylbenzenesulfonic acid) and small gas molecules (H 2 , CO, N 2 ) as ligands. As a result, new water‐soluble ruthenium mixed hydride complexes, presumably key species in many industrial catalytic processes, have been formed and identified. The Ru II mixed hydrides were synthesized, and their formation was followed in situ by multinuclear NMR spectroscopy, pressurizing aqueous Ru II TPPTS systems with H 2 and CO gas in sapphire NMR tubes. The formation equilibrium of these complexes is highly dependant on the temperature and the gas pressures. Under 50 atm of N 2 , the unique [RuH(CO)(N 2 )(TPPTS) 2 (H 2 O)] + complex has been identified, which could be the first step toward dinitrogen activation.