Kristall- und MolekülStruktur von 2(C6H5)3AsO · H2SeO3

Crystal and Molecular Structure of 2(C₆H₅)₃AsO · H₂SeO₃ 2(C₆H₅)₃AsO · H₂SeO₃ crystallizes in the orthorhombic space group Fdd2—C_2v¹⁹, with a = 20.472(9), b = 32.747(1) and c = 10.008(8) Å and Z = 8; d (calc./obs.) = 1.52₇/1.52 g · cm^?3. The structure has been determined from 808 independent reflections by Patterson- and Fouriersyntheses, and has been refined by least squares methods to R = 0.056. In the compound two (C₆H₅)₃AsO-units and one selenite group are linked by short H-bonds O …? H …? O-distance 2.48(4) resp. 2.35(4) Å]. The As? O-distances are 1.64(9), the Se? O-distances are 1.69(3), 1.83(3), resp. 1.76(3) Å.