The chlorocarbonyl bis-[butylphenyl (meta-sulfonate-phenyl)phosphine] rhodium (I) complex shows catalytic hydroformylation activity in toluene/water biphasic medium for 1-hexene, cyclohexene, 2,3-dimethyl-2-butene and 2-methyl-2-pentene, their binary mixtures and a real Venezuelan naphtha, under standardized reaction conditions (1000 psi of syngas (1:1 H 2 /CO), 100ºC, substrate/catalyst molar ratio (600:1) and 4 h reaction time), obtaining high percent conversion to oxygenated products.
Reaction between Mo(CO) 6 and p-C 5 NH 4 SO 3 Na (1:2 (Mo: p-C 5 NH 4 SO 3 Na) stoichiometric ratio) gave the trans-Mo(CO) 4 (p-C 5 NH 4 SO 3 Na) 2 complex, (1), in 80% yield. Complex (1) has been characterized by FTIR, 1 H and 13 C NMR spectroscopy. Complex (1) has most likely an idealized D 4h geometry with trans N-bound p-C 5 NH 4 SO 3 Na ligands.
Trans-bis(sodium pyridine-p-sulphonate)tetracarbonylmolybdenum(0) complex, (trans-Mo(CO) 4 (p-PySO 3 Na) 2 , (1)) was used as a catalytic precursor for the 1-hexene hydroformylation reaction, in biphasic toluene/water medium (T = 100ºC, syngas total pressure = 600 psi, pH 2 /pCO = 1). Complex (1) showed good activity favoring the linear aldehyde. Likewise as other organic olefin substrates and with synthetic and real naphtha, good conversions to oxygenated products were obtained.
RuCl 2 (DMSO) 2 (NC 5 H 4 CO 2 Na-3) 2 is very soluble in the ionic liquid (IL) 1-n-butyl-3-methylimidazolium tetrafluoroborate, [(BMIM)BF 4 ]. The complex was prepared by reacting RuCl 2 (DMSO) 4 with NC 5 H 4 CO 2 Na-3, sodium nicotinate, in toluene, and was characterized by spectroscopic methods. The complex catalyzes the hydrogenation of 1-hexene (600 psi H 2 , 100°C) in a two-phase system consisting of cyclohexane/[(BMIM)BF 4 ] with 75% conversion in 24 h and modest substrate isomerization. The complex shows good stability and can be reused several times with little loss in activity.
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