Axial ligand substitution reactions of head-to-head α-pyridonato-bridged Pt(III) binuclear complexes bearing various equatorial ligands with chloride ion and olefin
Axial ligand substitution reactions of head-to-head α-pyridonato-bridged Pt(III) binuclear complexes bearing various equatorial ligands with chloride ion and olefin
复制标题
带有各种赤道配体的头对头α-吡啶酮桥接Pt(III)双核配合物与氯离子和烯烃的轴向配体取代反应
DOI：
10.1016/j.molliq.2018.04.024
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发表时间：
2018
影响因子：
6
通讯作者：
Kazuko Matsumoto
中科院分区：
文献类型：
--
作者：
Shintaro Kusuhara;Kaori Kojima;Yota Suzuki;Yuki Morita;Tomoaki Sugaya;Satoshi Iwatsuki;Koji Ishihara;Kazuko Matsumoto
本文研究了带有赤道胺配体的头对头（HH）α-吡啶酮桥联铂（III）双核配合物的轴向配体取代反应（L = MeNH 2、EtNH 2，L-L =乙二胺（en）和N，N′-二甲基乙二胺（Me 2 en））[（Cl）（NH3）2 Pt合成了（μ-α-吡啶酮）2 Pt（L）2（Cl）]2+，并研究了它们在酸性水溶液中的轴向配体取代动力学。对于这些配合物，从一氯配合物的二氯配合物的形成反应进行通过三个平行的反应途径，在对比的HH四氨胺amidato桥连的铂（III）双核配合物。讨论了赤道胺配体和桥连配体对轴向配体取代的影响。研究了[（H_2O）（NH_3）_2Pt（μ-α-pyridonato）_2Pt（en）（OH_2）]_2 ~+与对苯乙烯磺酸盐的反应动力学。
In this study, axial ligand-substitution reactions of head-to-head (HH) α-pyridonato-bridged platinum(III) binuclear complexes bearing equatorial amine ligands (L = MeNH2, EtNH2, and L–L = ethylenediamine (en), and N,N′-dimethylethylenediamine (Me2en)) [(Cl)(NH3)2Pt(μ-α-pyridonato)2Pt(L)2(Cl)]2+are synthesized, and the axial ligand substitution on these complexes with chloride ions are kinetically investigated in acidic aqueous solution. For these complexes, the formation reactions of the dichloro complexes from the monochloro complexes proceeded through three parallel reaction pathways, in contrast to those for the HH tetraammine amidato-bridged platinum (III) binuclear complexes. The effects of equatorial amine ligands as well as the bridging ligands on the axial ligand substitution are discussed. The reaction of [(H2O)(NH3)2Pt(μ-α-pyridonato)2Pt(en)(OH2)]2+withp-styrenesulfonate is also kinetically investigated.