23822-17-5Relevant academic research and scientific papers
Unsupported monomeric stibine oxides (R3SbO) remain undiscovered
Wenger, John S.,Johnstone, Timothy C.
, p. 3484 - 3487 (2021)
Attempts to investigate the properties and reactivity of the stiboryl moiety (R3Sb+-O?or R3SbO), as in monomeric stibine oxides free of interaction with Lewis acids/bases, led us to conclude that this functional
Structural, spectroscopic and computational examination of the dative interaction in constrained phosphine-stibines and phosphine-stiboranes
Chalmers, Brian A.,Bühl, Michael,Athukorala Arachchige, Kasun S.,Slawin, Alexandra M. Z.,Kilian, Petr
supporting information, p. 7520 - 7531 (2015/05/13)
Abstract A series of phosphine-stibine and phosphine-stiborane peri-substituted acenaphthenes containing all permutations of pentavalent groups -SbClnPh4-n (5-9), as well as trivalent groups -SbCl2, -Sb(R)Cl, and -SbPh2 (2-4, R=Ph, Mes), were synthesised and fully characterised by single crystal diffraction and multinuclear NMR spectroscopy. In addition, the bonding in these species was studied by DFT computational methods. The P-Sb dative interactions in both series range from strongly bonding to non-bonding as the Lewis acidity of the Sb acceptor is decreased. In the pentavalent antimony series, a significant change in the P-Sb distance is observed between -SbClPh3 and -SbCl2Ph2 derivatives 6 and 7, respectively, consistent with a change from a bonding to a non-bonding interaction in response to relatively small modification in Lewis acidity of the acceptor. In the SbIII series, two geometric forms are observed. The P-Sb bond length in the SbCl2 derivative 2 is as expected for a normal (rather than a dative) bond. Rather unexpectedly, the phosphine-stiborane complexes 5-9 represent the first examples of the σ4P→σ6Sb structural motif. A complex situation: The strength of a dative phosphine-stiborane (P-Sb) interaction increases with stepwise replacement of phenyl groups on antimony atom with chloride groups. As the Lewis acidity is increased in regular steps (see figure), essentially linear response is observed initially, however then a sudden change in the P-Sb distance takes place during one particular step. This is consistent with a sudden switch from a non-bonding to a bonding interaction, that is, a discrete rather than continuum response.
Fourier-transform Raman and infrared spectra and normal coordinate analysis of the triphenyl compounds and their methyl-, methoxy- and fluoro-substituted derivatives of arsenic, antimony and bismuth
Ludwig,Dolny,Goetze
, p. 2363 - 2372 (2007/10/03)
The Fourier transform (FT)-Raman and infrared (IR) spectra of triphenyl-, perdeuterated triphenyl-, tris(2-methylphenyl)-, tris(3-methylphenyl)-, tris(2,4,6-trimethylphenyl)-, tris(2-methoxyphenyl)-, tris(3-methoxyphenyl)-, tris(3-fluorophenyl)- and tris(
Oxygen bridged hexa(organo)di-antimony compounds: Hydrolysis by traces of moisture and crystal structures of [SbR3Br]2O, where R = p-or o-tolyl
Gibbons, Martin N.,Blake, Alexander J.,Sowerby, D. Bryan
, p. 217 - 225 (2007/10/03)
1H and 13C NMR spectroscopy of four compounds of the type [SbR3X]2O, where X = Br and R = Ph, p-tolyl and o-tolyl or X = Cl and R = Me, have been interpreted as showing that unless stringent precautions are take
Tri- and di-arylantimony( V) thiocyanates and mixed halide thiocyanates; crystal structure of triphenylantimony( V) di-isothiocyanate
Forster, Glynis E.,Begley, Michael J.,Sowerby, D. Bryan
, p. 263 - 274 (2007/10/03)
A series of triarylantimony(V) dithiocyanates has been prepared by oxidising the appropriate antimony(III) compound with thiocyanogen. IR and 14N NMR spectroscopy indicate the presence of terminally N-bonded thiocyanate groups and this has been confirmed by a crystal structure determination for the SbPh3(NCS)2. The asymmetric unit contains three independent trigonal bipyramidal molecules, which differ in the orientations of the axial N-bonded thiocyanates and the phenyl groups in the equatorial plane, and there may be weak C-H ... S interactions. Treatment of SbPh2X3, where X = Br or Cl, with KSCN gave K[SbPh2(NCS)4] and attempts to prepare SbPh2(NCS)3 and related diphenylantimony(V) mixed halide thiocyanates, SbPh2Xn(NCS)3 - n where X = Br or Cl and n = 0-2, by treating appropriate diphenylantimony(III) precursors with thiocyanogen or thiocyanogen bromide or chloride gave products which in many cases underwent reorganisation during recrystallisation. Samples of SbPh2(NCS)3, SbPh2Br(NCS)2, SbPh2Br2(NCS) and SbPh2Cl2(NCS), and SbPh3Br(NCS) have, however, been isolated as microcrystalline solids.
Synthesis of Mesitylstibanes
Ates, M.,Breunig, H. J.,Soltani-Neshan, A.,Tegeler, M.
, p. 321 - 326 (2007/10/02)
Trimesitylstibane (1) reacts with SbCl3 or SbBr3 to form the halostibanes Mes2SbCl (2), MesSbCl2 (3), Mes2SbBr (4), or MesSbBr2 (5) .Action of MesMgCl on an excess of SbCl3 or SbBr3 at low temperatures gives Mes3SbCl2 (6) or Mes3SbBr2 (7), resp.Addition of Br2 to 1 gives 7 in 96percent yield.The silylstibanes Mes2SbSiMe3 (8) and MesSb(SiMe3)2 (9) are formed by dehalogenation of Me3SiCl and 4 or 5 by Mg filings in tetrahydrofuran.Mes2SbOSiMe3 (10) is obtained by air oxidation of 8.Reduction of 4 with Mg gives Mes2SbSbMes2 (19).Crystals of the composi tion (MesSb)6*C6H6 (13a) or (MesSb)4*C6H5CH3 (13b) are obtained from Mg and 5 after work-up in benzene or toluene, resp. - Keywords: Trimesitylstibane, Halomesitylstibanes, Trimesitylantimonydihalides, Tetramesityldistibane, Hexamesityl-cyclo-hexastibane, Mesityl(trimethylsilyl)stibanes
