The complex [Ru(η6-p-MeC6H4Pri)Cl2]2 reacted with K[quin] (quin = quinolin-8-olate) to yield the half-sandwich complex Ru(η6-p-MeC6H4Pri)(quin)Cl 1. Chloride abstraction from 1 with AgCF3SO3 affords the neutral complex Ru(η6-p-MeC6H4Pri)(quin)(κ1O-CF3SO3). The lability of the CF3SO3â ligand in 2 is apparent by the reaction with CH3CN giving [Ru(η6-p-MeC6H4Pri)(quin)(CH3CN)]CF3SO33. Refluxing RuTp(COD)Cl in the presence of K[quin] resulted in the formation of Ru(COD)(quin)24 containing no Tp ligand; 4 has also been obtained in good yield by treating [Ru(COD)Cl2]n with K[quin] in boiling methanol. Treatment of either 1 or 3 with 1 equivalent of KTp resulted in the formation of the unusual complex Ru(η6-p-MeC6H4Pri)(quin)(κ1N-Tp) (5) featuring a κ1-co-ordinated Tp ligand. However, if 1 is treated with KTp in the presence of AgCF3SO3 the cationic complex [Ru(η6-p-MeC6H4Pri)(quin)(κ1-Hpz)]CF3SO36 is obtained containing a pyrazole ligand as a result of BâN bond cleavage. Complexes 1, 4, 5, and 6 have been characterized by X-ray crystallography.
复杂的 [Ru(η6-p-MeC6H4Pri)Cl2]2 与 K[quin](quin =
吡啶-8-
羧酸盐)反应生成半夹心复合物 Ru(η6-p-MeC6H4Pri)(quin)Cl 1。使用 AgCF3SO3 从 1 中去除
氯导致生成中性复合物 Ru(η6-p-MeC6H4Pri)(quin)(κ1O-CF3SO3)。CF3SO3⁻
配体在 2 中的易位性通过与 CH3CN 反应明显可见,生成 [Ru(η6-p-MeC6H4Pri)(quin)(CH3CN)]CF3SO3。将 RuTp(COD)Cl 在 K[quin] 存在下回流处理,形成了不含 Tp
配体的 Ru(COD)(quin)2;通过在沸腾的
甲醇中用 K[quin] 处理 [Ru(COD)Cl2]n 也可获得 4。将 1 或 3 处理与 1 当量的 KTp 可以形成不寻常的复合物 Ru(η6-p-MeC6H4Pri)(quin)(κ1N-Tp) (5),该复合物具有 κ1 配位的 Tp
配体。然而,如果将 1 与 KTp 在 AgCF3SO3 存在下处理,将得到阳离子复合物 [Ru(η6-p-MeC6H4Pri)(quin)(κ1-Hpz)]CF3SO3 (6),因 B-N 键的断裂而含有
肼嘧啶配体。复合物 1、4、5 和 6 已通过 X 射线晶体学进行了表征。