65650-76-2Relevant academic research and scientific papers
Use of the anions 2- and - (L = bidentate phosphines) in the synthesis of mercury-transition metal clusters
Reina, Roser,Rossell, Oriol,Seco, Moqiel,Perales, Aurea
, p. 101 - 108 (2007/10/02)
The reaction of the PPN+ (bis(triphenylphosphine)nitrogen(1+)) salt of 2- with ClHg-m complexes (m=Mo(CO)3CP, W(CO)3Cp, Fe(CO)2CP, Mn(CO)5, and Co(CO)4) gives high yields of the new trimetallic clusters (PPN) alo
Selective reduction of acyl chlorides to aldehydes by anionic 6B transition-metal hydrides
Kao,Gaus, Paul L.,Youngdahl, Kay,Darensbourg, Marcetta Y.
, p. 1601 - 1603 (2008/10/08)
Acyl chlorides can be selectively and rapidly reduced, under mild conditions, by group 6B anionic hydrides, HM(CO)4L- (M = Cr, W; L = CO, PR3), giving the corresponding aldehydes and the metal chlorides CIM(CO)4L-. The reaction is nearly quantitative for both aliphatic and aromatic acyl chlorides using solvent systems such as dichloromethane, tetrahydrofuran, or acetonitrile. Only in the presence of acid will the aldehydes consume a second equivalent of hydride, subsequently being reduced to alcohols. The anionic hydrides selectively reduce acyl chlorides in the presence of other reducible groups such as alkyl bromides or nitro aromatics. In situ preexchange of hydrogen by deuterium (HM(CO)4L-/ CH3OD → DM(CO)4L-/CH3OH) allows for deuterium delivery, giving RCDO products, as indicated by 2H NMR.
Chemical and X-ray Structural Stadies on the (Acetato)- and (Trifluoroacetato)pentacarbonylmetalates of Chromium and Molybdenum
Cotton, F. Albert,Darensbourg, D. J.,Kolthammer, B. W. S.
, p. 398 - 405 (2007/10/02)
The reaction of , PNP = +, with AgO2CCH3 and AgO2CCF3 in dichloromethane readily affords the complexes (1) and (2a) in good yield.The trifluoroacetate derivative of chromium (2b) is conveniently prepared in a similar manner.All three compounds crystallize in the triclinic space group (*) with cell dimensions a = 10.563 (1) Angstroem, b = 12.154 (2) Angstroem, c = 17.047 (2) Angstroem, α = 104.01 (1) deg, β = 106.86 (1) deg, γ = 91.79 (1) deg for 1, a = 10.766 (2) Angstroem, b = 12.210 (1) Angstroem, c = 17.115 (2) Angstroem, α = 104.10 (1) deg, β = 106.59 (1) deg, and γ = 92.77 (1) deg for 2a, and a = 10.715 (2) Angstroem, b = 12.141 (2) Angstroem, c = 17.070 (2) Angstroem, α = 104.21 (1) deg, β = 106.57 (1) deg, and γ = 92.56 (2) deg for 2b.The structure of 1 was refined to values of R1 = 0.069 and R2 = 0.083 for 54 atoms (18 anisotropic) and 2860 reflections with I > (*), while 2b was refined to values of R1 = 0.073 and R2 = 0.089 for 57 atoms (21 anisotropic) and 3470 reflections with I > (*).The structure 2a converged with R1 = 0.050 and R2 = 0.070 for 5338 reflections with I > (*) and 57 anisotropic atoms.The most significant structural aspects are essentially equivalent (M)O-C and C=O bond lengths and short trans M-C(O) bond distances.Ligand substitutional processes involving displacement of either the acetate or carbonyl ligands in are very facile, thus making them interesting and useful for preparing other compounds.
SYNTHESIS OF THE PENTACARBONYL(CHALCOCARBONYL)CHROMIUM(0) COMPLEXES, Cr(CO)5(CX) (X = S, Se)
English, Ann M.,Plowman, Keith R.,Baibich, Ione M.,Hickey, James P.,Butler, Ian S.,et al.
, p. 177 - 183 (2007/10/02)
The arene complexes, (η6-C6H6)Cr(CO)2(CX) (X = S, Se), react with excess CO gas under pressure in tetrahydrofuran at about 60 deg C to produce the Cr(CO)5(CX) complexes in high yield.The IR and NMR (13C and 17O) spectra of these complexes are i
The chemistry of the dinuclear carbonyl anions. III. Halogen-bridged anions
Ruff
, p. 1821 - 1825 (2008/10/08)
Anions of the type M(CO)5I- (where M = Cr, Mo, or W) react with excess M(CO)6 or M′(CO)6 under photolytic conditions to form dinuclear anions of the type M2(CO)10I- or MM′(CO)su
