27770-63-4Relevant academic research and scientific papers
Metallorganische Lewis-Saeuren. XXXVII. Kationische Pentacarbonyl(phosphan)rhenium-komplexe und deren Reactionen mit Nucleophilen
Steil, Peter,Sacher, Wolfgang,Fritz, Peter M.,Beck, Wolfgang
, p. 363 - 374 (2007/10/02)
The raections of pentacarbonyltetrafluoroboratorhenium, (OC)5ReFBF3, with PH3, PPh3, PPh2H, and chlorphosphanes lead to cationic complexes +BF4- (1).Nucleophiles react with the chlorphosphane ligands of 1 to give the ionic complexes +BF4- (R'=OH, OMe, OEt).Reaction of +BF4- with OH- yields the bridged 2+2BF4-, whereas with +BF4- and OH- the complex +BF4- is formed.The azide ion is added to a cis-carbonyl ligand of +BF4- to form the neutral isocyanato complex (OC)4(ClPh2P)ReNCO.The hydroxycarbonyl complexes cis-(OC)4Re(PPh2R)(COOH) are obtained from the reaction of +BF4- (R=Ph, H) with hydroxide.The reactions of + with M(CO)5- (L=PPh3, P(OMe)3, CN-tBu; M=Mn, Re) give the nonacarbonyl dimetal compounds L(OC)4Re-M(CO)5.
The Palladium-catalysed Reaction Between and Phosphines and the Crystal and Molecular Structure of Diaxial
Harris, Gillian W.,Boeyens, Jan C. A.,Coville, Neil J.
, p. 2277 - 2282 (2007/10/02)
The reaction between and PR3 in xylene is catalysed by Pd/C, Pd/CaCO3, and PdO and yields the complexes 10-n(PR3)n> (n=1 or 2) as the major products (15-80percent).Attempts to synthesise 10-n(PR3)n from and PR3 in the presence of NMe3O under milder conditions (e.g. refluxing CH2Cl2) also gave the above products with n=1 or 2 as well as high yields of fac-.An X-ray crystal structure determination of diaxial was carried out: space group C2/c, Z=4, a=22.779(9), b=7.166(3), c=17.249(7) Angstroem, β=95.13(3) deg, R=0.0602.The structure has a staggered geometry with torsion angles deviating by +/-6 deg from the ideal (45 deg).The Re-Re bond length was found to be 3.044(1) Angstroem, cf., 3.041(1) Angstroem for , indicating that this parameter is almost invariant on substitution of CO by PMe2Ph.
Photochemical Reaction of Dirhenium Decacarbonyl with Water
Gard, David R.,Brown, Theodore L.
, p. 6340 - 6347 (2007/10/02)
The photochemical reaction of Re2(CO)10 with H2O in THF and other solvents has been studied, with use of radiation of varying wavelength.The initial reaction leads to Re2(CO)9(OH2), formed upon irradiation at 313 nm.This product is shown to form via a pri
FREE RADICAL INTERMEDIATES IN THE REACTION BETWEEN DECACARBONYLDIRHENIUM AND TRIPHENYLPHOSPHANE
Cox, David J.,Davis, Reg
, p. 339 - 345 (2007/10/02)
The reaction between Re2(CO)10 and PPh3 in refluxing xylene has been re-examined.The main products are 1,2-diaxial Re2(CO)8(PPh3)2 and mer-trans-HRe(CO)(PPh3)2.A range of other products have been isolated by chromatographic procedures and their production rationalised.The previously reported isolable paramagnetic products have not been confirmed, but evidence is presented for their formation as unstable intermediates.
