Flash vacuum pyrolysis studies. 9. Photoelectron spectra and molecular properties. 101. Synthesis and thermal decomposition of 1,3-dithietane and its S-oxides
Flash vacuum pyrolysis studies. 9. Photoelectron spectra and molecular properties. 101. Synthesis and thermal decomposition of 1,3-dithietane and its S-oxides
Ring opening of 1,3-dithietane-1,1-dioxide by a triosmium cluster
作者:Richard D Adams、Wen Huang
DOI:10.1016/s0022-328x(98)00595-6
日期:1999.1
The reaction of the cyclic sulfone, 1,3-dithietane-1,1-dioxide, 1 with Os-3(CO)(10)(NCMe)(2), 2 at 25 degrees C provided the new compound Os-3(CO)(10)(mu -CH2SCH2SO2), 3 in 73% yield. When solutions of 3 in heptane solvent were heated to reflux, they are converted to the compound Os-2(CO)(6)(mu-CH2SCH2SO2), 4 in 46% yield. Both products were characterized by IR, H-1-NMR and single crystal X-ray diffraction analyses. Compound 3 contains a bridging SCH2SO2CH2 ligand formed by an opening of the ring of the sulfone and one edge of the osmium cluster. Compound 3 was formed by the loss of an Os(CO)(4) group from 3. The SCH2SO2CH2 ligand in 4 is coordinated in a fashion similar to that in 3. In both products, one of the oxygen atoms of the sulfone group is coordinated to one of the osmium atoms. In both cases, the S-O bond distance to the coordinated oxygen atom has increased in length and IR spectra of the S-O stretching absorptions show a substantial weakening of the S-O bond. (C) 1999 Elsevier Science S.A. All rights reserved.
BLOCK, E.;COREY, E. R.;PENN, R. E.;RENKEN, T. L.;SHERWIN, P. F.;BOCK, H.;+, J. AMER. CHEM. SOC., 1982, 104, N 11, 3119-3130
作者:BLOCK, E.、COREY, E. R.、PENN, R. E.、RENKEN, T. L.、SHERWIN, P. F.、BOCK, H.、+
DOI:——
日期:——
Flash vacuum pyrolysis studies. 9. Photoelectron spectra and molecular properties. 101. Synthesis and thermal decomposition of 1,3-dithietane and its S-oxides
作者:E. Block、E. R. Corey、R. E. Penn、T. L. Renken、P. F. Sherwin、H. Bock、T. Hirabayashi、S. Mohmand、B. Solouki