77900-40-4Relevant articles and documents
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.
