Treatment of 5-sulfosalicylic acid (H3Ssal) with BiPh3 results in the formation of the first dianionic carboxylate–sulfonate bismuth complex, [PhBi(HSsal)H2O]∞1a, and its ethanol analogue [PhBi(HSsal)EtOH]∞1b (space groupP21/c), while Bi(OAc)3 gives the mixed monoanionic and dianionic complex, [Bi(HSsal)(H2Ssal)(H2O)3]2·2H2O}∞2 (space groupP). The three complexes are all polymeric in the solid state as determined by single crystal X-ray diffraction, with extended frameworks constructed from dimeric [Bi(HSsal)]2, 1a and 1b, or from [Bi(HSsal)(H2Ssal)]2 units, 2. The heteroleptic bismuth complexes 1a and 2 display remarkable aqueous solubility, 10 and 2.5 mg ml−1 respectively, resulting in a clear solution of pH 1.5. In contrast, 1b is essentially insoluble in aqueous environments. All three complexes show significant activity against the bacterium Helicobacter pylori of <6.25 μg ml−1.
5-磺基水杨酸(H3Ssal)与
三苯基铋(BiPh3)反应生成首个二阴离子
羧酸-
磺酸铋复合物 [PhBi(HSsal) ]∞1a 以及其乙
醇类似物 [PhBi(HSsal)EtOH]∞1b(空间群 P21/c),而
三乙酸铋(Bi(OAc)3)则生成混合的单阴离子和二阴离子复合物 [Bi(HSsal)(H2Ssal)(
H2O)3]2·2 }∞2(空间群 P)。通过单晶 X 射线衍射确定,这三种复合物在固态下均为聚合物,具有由二聚体 [Bi(HSsal)]2、1a 和 1b,或由 [Bi(HSsal)(H2Ssal)]2 单元构成的拓展框架。异配位的
铋复合物 1a 和 2 显示出显著的
水溶性,分别为 10 和 2.5 mg ml−1,形成 pH 1.5 的清澈溶液。相反,1b 在
水相环境中基本不溶。所有三种复合物对幽门螺旋杆菌显示出显著活性,其抑菌浓度均低于 6.25 μg ml−1。