名称:
2,4-BIS(METHYLTHIO)-2,4-DITHIOXO-1,3,2,4- DIAZADIPHOSPHETIDINES-NMR CHARACTERIZATION AND CRYSTAL STRUCTURE
摘要:
New diazadiphosphetidines of the composition [MeSP(S)NR](2) have been investigated by P-31, C-13 and H-1 NMR spectroscopy and the configuration of the ring compound has been assigned. Structures of the 1,3-diphenyl compound 1g and the 1,3-di(ortho-tolyl) compound 1h have been determined by X-ray single-crystal analysis. Crystals of Ig and 1h grown from chloroform are colourless prisms of trans configuration. Single crystals of 1h obtained from dichloromethane are colourless plates of cis configuration. Crystal data: 1g (trans) monoclinic, C2/c, Z=4, a=9.373(2), b=16.145(3), c=11.705(2) Angstrom, beta=92.11(3)degrees; both (trans) monoclinic, P2(1)/c, Z=2, a=7.083(1), b=18.275(4), c=8.257(2) Angstrom, beta=110.13(3)degrees 1h (cis) monoclinic, P2(1)/n, Z=4, a=9.994(2), b=15.702(2), c=13.668(5) Angstrom, beta=105.14(2)degrees.