2629-48-3Relevant academic research and scientific papers
Solid-state Structures of Triarylantimony Dihalides; the Isolation of Some Mixed-halide Species and Crystal Structures of Ph3SbI2 and I3
Bricklebank, Neil,Godfrey, Stephen M.,Lane, Helen P.,McAuliffe, Charles A.,Pritchard, Robin G.
, p. 1759 - 1764 (2007/10/02)
Fifteen compounds of stoichiometry R3SbX2 (R = Ph or substituted aryl; X2 = Br2, I2 or IBr) were synthesized and studied by Raman spectroscopy.The crystal structure of Ph3SbI2 has been determined, which shows it to be a distorted trigonal-bipyramidal molecule.The distortion from regular trigonal-bipyramidal geometry may be explained by a pseudorotation process towards a rectangular pyramid.Moreover, there are two independent molecules within the unit cell and its distorted structure is in direct contrast to the known Ph3SbX2 (X = Cl or Br) which both adopt regular trigonal-bipyramidal geometry.The interhalogen compounds R3SbIBr also have trigonal-bipyramidal geometry.In direct contrast to the molecules Ph3El2 (E = P or As), which ionise in solution to form I, Ph3SbI2 is chemically changed in acetonitrile solution and forms the ionic I3, there being no evidence for I.The crystal structure of I3 has also been determined.
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.
