30224-53-4Relevant articles and documents
Complexes of distibinomethane ligands. 1. Iron, cobalt, nickel, and manganese carbonyl complexes
Hill, Angela M.,Levason, William,Webster, Michael,Albers, Isabel
, p. 5641 - 5647 (2008/10/08)
The reaction of Fe2(CO)9 in thf with Ph2SbCH2SbPh2 (dpsm) or Me2SbCH2SbMe2 (dmsm) produced [Fe(CO)4(η1-dpsm)] and [Fe(CO)4(μ-dmsm)Fe(CO)4], and Co2(CO)8 reacted with either distibine ligand (L-L) to give [Co2(CO)4(μ-CO)2(μ-L-L)]. Ni(CO)4 and dpsm gave [Ni-(CO)3(η1-dpsm)] and [Ni(CO)3(μ-dpsm)Ni(CO)3], while with dmsm only [Ni(CO)3(μ-dmsm)-Ni(CO)3] was isolated. Mn2(CO)10 reacted slowly with dpsm or dmsm in the presence of a [{(Cp)Fe(CO)2}2] catalyst to give [Mn2(CO)8(L-L)], but no reaction occurred with Re2(CO)10 under similar conditions. cis-[Mn(CO)4X(dpsm)] (X = Cl, Br, or I) and [Mn2(CO)8Br2(μ-dmsm)] were also prepared from the appropriate [Mn(CO)5X], but iron carbonyl halide derivatives were too unstable to isolate in the pure state. The complexes have been characterized by elemental analysis, IR and multinuclear NMR (1H, 13C{1H}, 55Mn, or 59Co) spectroscopy, and FAB mass spectrometry. The X-ray structures of dpsm, [Fe(CO)4(η1-dpsm)], and [Co2-(CO)4(μ-CO)2(μ-dmsm)] have been determined. No evidence for chelation by dmsm or dpsm was found, and Sb-C fission does not occur to significant extents in the reactions studied.
REACTIVITY OF MOLECULES CONTAINING ELEMENT-ELEMENT BONDS. PART III. REDUCTION OF HALO-ORGANOMETALLICS OF ANTIMONY(III) AND BISMUTH(III); CRYSTAL AND MOLECULAR STRUCTURE OF CoCp2
Calderazzo, Fausto,Marchetti, Fabio,Ungari, Fausto,Wieber, Markus
, p. 93 - 100 (2007/10/02)
Tetraphenyldibismuthine has been prepared by reducing BiPh2I with bis (cyclopentadienyl)-cobalt(II).CoCp2, the former being produced in situ in THF solution from BiPh3 and BiI3 (2:1 molar ratio) or from BiPh3 and I2; also, bis(pentamethylcyclopentadienyl)cobalt(II), CoCp2, reduces BiPh2Cl to Bi2Ph4 in THF solution.The bismuth(III) bromides Bi(p-tolyl)2Br or BiMe2Br have been reduced by CoCp2 to the corresponding dibismuthines, Bi2(p-tolyl)4 or Bi2Me4.Reduction by CoCp2 of the chloro derivatives of bismuth(III) and antimony(III), EPh2Cl produces E2Ph4 and the ionic CoCp2 complexes as by-products.The crystal and molecular structure of the antimony derivative CoCp2 was solved by X-ray diffraction methods.Crystal data: monoclinic, space group P21, a = 8.856(3), b = 16.245(5), c = 7.770(3) Angstroem, β = 109.67(5) deg, Z = 2, R = 0.0396.Similar to Bi2Ph4, Sb2Ph4 undergoes reactions across the element-element bond with p-benzoquinone and diazomethane to the corresponding insertion products (Ph2Sb)2O2C6H4 and (Ph2Sb)2CH2, respectively.
Mossbauer and nuclear quadrupole resonance spectra of some unsymmetrical organoantimony compounds and nuclear quadrupole resonance spectra of some of the arsenic analogs
Brill,Parris,Long,Bowen
, p. 1888 - 1891 (2008/10/08)
Unsymmetrical stibines of the type (C6H5)2Sb(CH2)nSb(C 6H5)2 show little or no asymmetry in the electric field gradient about the antimony nucleus. Large asymmetry is observed in cases where the diphenylstibino group is attached to Cl or is bound to an acetylenic linkage. This behavior is reminiscent of the occurrence of nuclear quadrupole splitting in tetravalent tin compounds and both phenomena may well arise from a common factor(s)-interaction of p electrons of the X group or polarity of the σ bonds. 121Sb Mossbauer spectra of trimethylstibine and the nqr spectra of (C6H5)2AsCH2As(C6H 5)2 and p-(C6H5)2AsCH2C6H 4CH2As(C6H5)2 have also been reported. The bond between As (or Sb) and the methylene group is electronically similar to that between As (or Sb) and the phenyl group.
