Pyrazolato-bridged polynuclear palladium and platinum complexes. Synthesis, structure, and reactivity.
Pyrazolato-bridged polynuclear palladium and platinum complexes. Synthesis, structure, and reactivity.
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DOI：
10.1021/ic026196g
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发表时间：
2003-05
影响因子：
4.6
通讯作者：
K. Umakoshi;Y. Yamauchi;Keiko Nakamiya;T. Kojima;M. Yamasaki;H. Kawano;M. Ônishi
中科院分区：
文献类型：
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作者：
K. Umakoshi;Y. Yamauchi;Keiko Nakamiya;T. Kojima;M. Yamasaki;H. Kawano;M. Ônishi
环状三核配合物[Pd（3）（mu-pz）（6）]（1）和[Pd（3）（mu-4-Mepz）（6）]（2）和双核配合物[Pd（2）]（mu-3-t-Bupz）（2）（3-t-Bupz）（2）[PdCl（2）（CH（3）CN）（2）]分别与吡唑（pzH）、4-甲基吡唑（4-MepzH）、和3-叔丁基吡唑（3-t-BupzH）的反应。在无碱存在下，用pzH处理[PdCl（2）（CH（3）CN）（2）]得到单核配合物[Pd（pzH）（4）] Cl（2）（6）。[PtCl（2）（C（2）H（5）CN）（2）]与pzH在Et（3）N存在下于C（2）H（5）CN中反应，得到已知的二聚Pt（II）配合物[Pt（pz）（2）（pzH）（2）]（2）（7）。3和7中参与氢键的质子很容易被银离子取代，得到异四核配合物[Pd（2）Ag（2）（mu-3-t-Bupz）（6）]（4）和异六核配合物[Pt（2）Ag（4）（mu-pz）（8）]（5）。对配合物1 - 6进行了结构表征。
Cyclic trinuclear complexes [Pd(3)(mu-pz)(6)] (1) and [Pd(3)(mu-4-Mepz)(6)] (2) and dinuclear complex [Pd(2)(mu-3-t-Bupz)(2)(3-t-Bupz)(2)(3-t-BupzH)(2)] (3) have been prepared by the reactions of [PdCl(2)(CH(3)CN)(2)] with pyrazole (pzH), 4-methylpyrazole (4-MepzH), and 3-tert-butylpyrazole (3-t-BupzH), respectively, in CH(3)CN in the presence of Et(3)N. In the absence of the base, treatment of [PdCl(2)(CH(3)CN)(2)] with pzH gave the mononuclear complex, [Pd(pzH)(4)]Cl(2) (6). The reaction of [PtCl(2)(C(2)H(5)CN)(2)] with pzH in the presence of Et(3)N under refluxing in C(2)H(5)CN afforded the known dimeric Pt(II) complex, [Pt(pz)(2)(pzH)(2)](2) (7). The protons participating in the hydrogen bonding in 3 and 7 are easily replaced by silver ions to give the heterotetranuclear complex [Pd(2)Ag(2)(mu-3-t-Bupz)(6)] (4) and the heterohexanuclear complex [Pt(2)Ag(4)(mu-pz)(8)] (5). The complexes 1-6 are structurally characterized.