作为素转移剂的trifosphiranes - 合成常规和化NHC素添加物
Jan-Erik Siewert1, André Schumann1, Tim Wellnitz1,2
1Leibniz Institut für Katalyse e.V. (LIKAT), A.-Einstein-Str. 29a, 18059 Rostock, Germany. Christian.hering-junghans@catalysis.de.
Dalton transactions (Cambridge, England : 2003)
|October 17, 2023
概括
基替代的三酸有效地将素转移到N-异环碳酸 (NHC),形成新的添加物. 一些衍生品在被辐射时释放素,并与金属化物形成独特的复合物.
科学领域:
- 有机化学 有机化学
- 协调化学 协调化学
- 碳化合物的化学成分
背景情况:
- 以基替代的三酸被探索为胺基转移试剂.
- 在有机金属化学中,N-异环碳 (NHCs) 是多功能联体.
研究的目的:
- 合成和描述新型N-异环碳酸添加物 (NHCPs).
- 为了研究NHCPs中的P-C键裂解和氨基释放.
- 探索与金属化物结合化 bis (NHCP) 的协调化学反应.
主要方法:
- 基替代三酸与各种NHC的反应.
- 使用烯桥接 bis-NHCs合成合 bis-NHCPs.
- 光化学辐射 (396nm LED) 诱导P-C键裂变.
- 使用GeCl2 (二氧化) 和GaI3.3进行协调研究.
- 结构特征 (例如,X射线衍射) 和NMR光谱.
- 自然债券轨道 (NBO) 分析电荷转移.
主要成果:
- 合成了12个ArP extasciicircum{}NHC adducts的库,展示了各种固态配置文件.
- 获取了化双 (NHCP),其中三个衍生物具有结构性特征.
- 1,4-烯桥接 bis ((NHCPs) 经过辐射证明了 P-C 键裂变和氨基释放.
- 1,3-烯桥接 bis ((NHCP) 与Ge和Ga化物形成离子分离的阴离子复合物.
- NBO的分析表明,从bis (NHCP) 连接体到金属中心的电荷转移很大.
结论:
- 基替代三酸是有效的胺基转移剂到NHCs.
- NHCP提供了一个研究素释和协调化学的平台.
- 合成的复合物表现出独特的电子性质,这是由于联体到金属的电荷转移.
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