trans-[Ru(NO)(NH3)4P(O−)(OEt)2](PF6)2. This compound exhibits a remarkable robustness over a wide range of pH relative to other similar ruthenium phosphorus nitrosyl complexes. At pH 3.0 and 25 °C, trans-[Ru(NO)(NH3)4P(O−)(OEt)2](PF6)2 decays, yielding free diethyl phosphite with a half-life of 9 days (k = 8.9 × 10−7 s−1). At pH 7.5 and 25 °C, this complex is competitively consumed by diethyl phosphite
摘要这项研究描述了一种新型的潜在NO / HNO供体在
水介质中的合成和反应性:反式[Ru(NO)(NH3)4P(O-)(OEt)2](PF6)2。相对于其他类似的
钌磷亚
硝酰基配合物,该化合物在很宽的pH范围内表现出显着的耐用性。在pH 3.0和25°C下,反式-[Ru(NO)(NH3)4P(O-)(OEt)2](PF6)2分解,生成具有9天半衰期的游离
亚磷酸二乙酯(k = 8.9) ×10-7 s-1)。在pH 7.5和25°C下,该络合物被
亚磷酸二乙酯解离(k = 5.15×10-5 s-1)和亚
硝酰基的亲核攻击(k = 7.25×10-5 s-1)竞争性消耗。然而,反式-[Ru(NO)(NH3)4P(O-)(OEt)2](PF6)2的半衰期为1.5小时(pH 7.5和25°C),可通过电
化学方式输送NO / HNO相对于SCE,在-0.50和-0.80 V的电势下激活。