DIHYDROXYTRIMETHYLSTIBORANE - PROPERTIES AND STRUCTURE

(CH3)(3)Sb(OH)(2) . H2O (1) is prepared by reaction of (CH3)(3)SbCl2 a nd NaOH. 1 reacts with CO2 to yield [(CH3)(3)SbOH](2)CO3 . 2H(2)O (2). Thermogravimetric investigations and mass spectra show that 1 and 2 d ecompose at low temperature and low pressure to H2O, CO2 and (CH3)(3)S bO. The crystal and molecular structures of 1 and 2 are determined. 1 crystallizes orthorhombic (Pbca) with a = 1185.2, b = 1069.6, c = 1207 .6 pm and Z = 8. 2 crystallizes in the acentric monoclinic space group Cc with a = 657.3, b = 1168.5, c = 2048.2 pm, beta = 95,33 degrees an d Z = 4. The infrared spectra are discussed with regard to the hydroge n bonding.