59967-36-1Relevant articles and documents
Supramolecular Arrangement of Molybdenum Carbonyl Metallosurfactants with CO-Releasing Properties
Parera, Elisabet,Marín-García, Maribel,Pons, Ramon,Comelles, Francesc,Suades, Joan,Barnadas-Rodríguez, Ramon
, p. 484 - 493 (2016)
Two families of molybdenum carbonyl metallosurfactants, Mo(CO)5L and Mo(CO)4L2, were synthesized using the functionalized phosphines Ph2P(CH2)nSO3Na (n = 2, 6, 10) and characterized by the usual spectroscopic and spectrometric methods. The study of the supramolecular arrangements of these compounds in aqueous medium has been performed by surface tension, fluorescence, dynamic light scattering, cryo-TEM, and small-angle X-ray scattering. All data point to the formation of medium and large vesicular structures with a membrane similar to the classical lipid bilayer, but it contains organometallic fragments instead of simple hydrophobic chains. Studies of CO release with these molybdenum carbonyl metallosurfactants have shown their viability as promising CO-releasing molecules.
Organometallic chemistry in a conventional microwave oven: The facile synthesis of group 6 carbonyl complexes
Ardon, Michael,Hogarth, Graeme,Oscroft, Daniel T.W.
, p. 2429 - 2435 (2007/10/03)
Syntheses proceeding by reflux may be improved, accelerated and simplified, by carrying out the reaction in a modified conventional microwave oven. To demonstrate the potential of this method, the synthesis of over 20 group 6 organometallic compounds is reported. Hexacarbonyls, most notably Mo(CO)6, react with a range of mono, and bi, and tridentate ligands in a modified conventional microwave oven. They generally proceed without an inert atmosphere, yields are high and reaction times are short. For example, cis -[Mo(CO)4(dppe)] is prepared in >95% yield in 20 min. Reaction of Mo(CO)6 with dicyclopentadiene affords a simple one-step synthesis of [CpMo(CO)3]2 in >90% yield, which reacts further with alkynes in toluene to produce dimetallatetrahedrane derivatives, [Cp2Mo2(CO)4 (μ-RC2R)]; presumably via the in situ formation of air-sensitive [CpMo(CO)2]2. Dimolybdenum tetra-acetate is also prepared in 48% yield in 45 min, however, this reaction requires an inert atmosphere. While W(CO)6 reacts rapidly with amines to give cis diamine adducts in high yields, direct reactions with phosphines are not so clean. Bis(phosphine) complexes are, however, cleanly formed when a small amount of piperidine is added to the reaction mixture, presumably via the bis(piperidine) complex cis-[W(CO)4(pip)2]. Reactions with Cr(CO)6 generally require an inert atmosphere and proceed less cleanly, although the important synthon [Cr(CO)5 Cl][NEt4] was prepared in 30 min (74% yield), while [(η6-C6H5OMe)Cr(CO)3] can be prepared in 45% after 4 h.
Ligand effects in the substitution chemistry of cis-bis(piperidine)tetracarbonylmolybdenum(0). A molybdenum-95 NMR study
Malito, John,Alyea, Elmer C.,Gossage, Robert A.
, p. 873 - 878 (2007/10/02)
Molybdenum-95 NMR chemical shifts are reported for a series of Mo(0) compounds of the type Mo(CO)4(pip)2-nLn (n=1,2; L=substituted pyridine ligands).The δ(95Mo) values correlate well with the pKa values for the substituted pyridines; for the n=1 series, Δ(95Mo) ranges from -1053 ppm (pKa=1.86 for 4-CN) to -1120 ppm (pKa=9.61 for 4-NMe2).The effects of solvent polarity and some in situ reactivity studies are described and the nature of the Mo-L bond compared to that with piperidine and some other ligands is discussed.
