摘要:
                                An x-ray structural investigation was carried out on the 1:1-complex of 1-carboxy-3,7-dinitrodibenzofurane with hexamethylphosphoric acid triamide (sp. gr. P1BAR, Z = 2, diffractometer, 1093 reflections, direct methods, R = 0.052).  The carboxy-dinitrodibenzofurane molecule was almost planar.  The dihedral angle between the six membered rings was 2.1-degrees, the functional groups in positions 1, 3, 7 were rotated by 7.0-degrees (COOH), 6.2 and 0.9-degrees (NO2).  Oxygen atoms and solvent molecules were linked into the crystals by a strong OH...O bond 2.503 angstrom, formed by oxygen atoms of the carboxyl and phosphoryl groups.