106006-69-3Relevant academic research and scientific papers
N- and O-arylation with triphenylantimony ortho-phenylenedioxides
Stolyarova,Shavyrin,Finet,Fedorov
, p. 1736 - 1739 (2007/10/03)
2,2,2-Triphenyl-1,3,2-benzodioxastibolanes react with alcohols, phenols, and amines in the presence of copper salts to give the corresponding O- and N-phenyl derivatives. Cyclic SbV dialkoxide containing an electron-withdrawing nitro group in t
Distortion coordinate for nonrigid five-coordinated antimony. Synthesis and structure of oxygen- and sulfur-containing cyclic Organostiboranes
Holmes, Robert R.,Day, Roberta O.,Chandrasekhar,Holmes, Joan M.
, p. 163 - 168 (2008/10/08)
The monocyclic stiboranes Ph3Sb[S2C2(CN)2] (1) and Ph3Sb(O2C6H3-4-NO2) (3) were synthesized by the reaction of Ph3SbCl2 with the disodium salt of maleonitriledithiol and by the reaction of 4-nitrocatechol in the presence of Et3N, respectively. Reaction of p-tolylstibonic acid with pinacol gave the bicyclic stiborane (Me4C2O2)2Sb(C6H 4-p-Me) (2). Stiboranes 2 and 3 are new compounds. X-ray analysis revealed that 1 and 2 are trigonal bipyramidal while 3 is closer to a square-pyramidal structure. Molecules of 3 exist in the solid as weakly connected dimers, which accounts for its structural displacement toward the square pyramid. The distortion coordinate expressing solid-state nonrigidity is the Berry pseudorotational coordinate, the same as that found for pentacoordinated structures of other elements of main groups 4 (14) and 5 (15). However, lattice effects enter as a more important structural influence for some stiboranes. Stiborane 1 crystallizes in the monoclinic space group P21/c with a = 9.844 (3) ?, b = 10.101 (2) ?, c = 20.537 (4) ?, β = 92.63 (2)°, and Z = 4. 2 crystallizes in the tetragonal space group I42d with a = 23.787 (5) ?, c = 7.070 (1) ?, and Z = 8. 3 crystallizes in the monoclinic space group P21/n with a = 10.131 (1) ?, b = 18.945 (5) ?, c = 10.788 (2) ?, β = 99.69 (1)°, and Z = 4. The final conventional unweighted agreement factors were 0.024 (1), 0.025 (2), and 0.032 (3).
