Synthesis and Reactivity of Pt II Methyl Complexes Supported by Pyrazolate Pincer Ligands
Synthesis and Reactivity of Pt II Methyl Complexes Supported by Pyrazolate Pincer Ligands
复制标题
吡唑酯钳配体支持的 Pt II 甲基配合物的合成和反应活性
DOI：
10.1021/acs.organomet.0c00023
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发表时间：
2020
期刊：
影响因子：
2.8
通讯作者：
Goldberg, Karen I.
中科院分区：
文献类型：
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作者：
Zahora, Braden A.;Gau, Michael R.;Goldberg, Karen I.
多齿吡唑盐配体2-（5-叔丁基吡唑-3-基）-6-（二乙基氨基甲基）吡啶（HNNN）Etand 2，6-bis（5-tert-butyl-1H-吡唑-3-基）吡啶（HNNNH）用Pt II金属化以形成中性Pt（*NNN）EtCH 3和阴离子[Y][Pt（*NNN*）CH 3]（Y = Li（THF）−Cl−Li（THF）3; Y = PPN）（* 表示吡唑盐N已去质子化）。研究了这些PtII-CH 3配合物与酸的反应。质子化优先发生在吡唑盐位点，甲烷的释放需要额外的酸。
Multidentate pyrazolate ligands, 2-(5-tert-butylpyrazol-3-yl)-6-(diethylaminomethyl)pyridine(HNNN)Etand 2,6-bis(5-tert-butyl-1H-pyrazol-3-yl)pyridine (HNNNH), were metalated with PtIIto form neutral Pt(*NNN)EtCH3and anionic [Y][Pt(*NNN*)CH3] (Y = Li(THF)−Cl−Li(THF)3; Y = PPN) (* denotes that the pyrazolate N has been deprotonated). Reactions of these PtII–CH3complexes with acids were investigated. Protonation occurs preferentially at the pyrazolate site, and the release of methane requires additional acid.