allows the chelating diamine in starting cation complexes to be replaced by weaker bases. Step 2 is suitable for introducing ligands effectively binding Co(III) ion, viz. typical chelating molecules and anions, or strong uniacidic bases. Step 3 permits the latter monodentate ligands to be exchanged for weaker bases. A variety of cationic, neutral and anionic complexes were thus obtained. Stoichiometry
摘要已经指定了制备新系列的六价
钴(III)配合物的途径,这些配合物包含一个σ键合的烷基(R),一个混合的三齿
配体和各种单齿或双齿Lewis碱。它们由一个或多个直接或质子辅助
配体取代反应组成,如将两个相同的中性单齿
配体引入平面三齿阴离子o--OC6H4C(Me)N(
CH2)2NH2的配合物的模型方案所示(7-Me-salen)−:[RC o(7-M e-salen)(en)] +→LH + [RC o(7-M e-salen)L 2] +→L'[RC o( 7-M e- Salen)L 2'] +→L''H + [RC o(7-M e-salen)L 2”] +步骤1使起始阳离子配合物中的螯合二胺被弱碱取代。步骤2适合于引入有效结合Co(III)离子的
配体,即。典型的螯合分子和阴离子,或强单酸碱。步骤3允许将后者的单齿
配体交换为较弱的碱基。因此获得了各种阳离子,中性和阴离子络合物。这些配合物