TY - JOUR
T1 - Axial ligand substitution reactions of head-to-head α-pyridonato-bridged Pt(III) binuclear complexes bearing various equatorial ligands with chloride ion and olefin
AU - Kusuhara, Shintaro
AU - Kojima, Kaori
AU - Suzuki, Yota
AU - Morita, Yuki
AU - Sugaya, Tomoaki
AU - Iwatsuki, Satoshi
AU - Ishihara, Koji
AU - Matsumoto, Kazuko
N1 - Funding Information:
We wish to express our thanks for the financial support provided by JSPS KAKENHI Grant Number 17K05910 . We would like to thank Editage ( www.editage.jp ) for providing English language editing services.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/7/15
Y1 - 2018/7/15
N2 - 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+ with p-styrenesulfonate is also kinetically investigated.
AB - 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+ with p-styrenesulfonate is also kinetically investigated.
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U2 - 10.1016/j.molliq.2018.04.024
DO - 10.1016/j.molliq.2018.04.024
M3 - Article
AN - SCOPUS:85046816096
SN - 0167-7322
VL - 262
SP - 556
EP - 564
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
ER -