含碳硼烷半夹心型钴硫16电子化合物与二炔烃的反应性研究
Reactivity of the 16e CpCo Half-sandwich Complex Containing a Chelating 1,2-Dicarba-closo-dodecaborane-1,2-dithiolate Ligand towards Diynes
作者单位
徐智伟 南京大学化学化工学院南京 210093 
韩 磊 南京大学化学化工学院南京 210093 
杨震洲 南京大学化学化工学院南京 210093 
沈旭杰 南京大学化学化工学院南京 210093 
燕 红 南京大学化学化工学院南京 210093 
摘要: 含双硫取代碳硼烷二齿配体的半夹心型钴16电子化合物CpCo[S2C2(B10H10)](Co16e)分别与1,4-二乙炔基苯(L1)、(S)-2,2′-二乙酰氧基-6,6′-二乙炔基-1,1′-联萘(L2)、2-溴-5-乙炔基噻吩(L3)和2,5-二乙炔基噻吩(L4)反应,分别得到18电子单核化合物CpCo(S2C2B10H9)(H2CCPhC≡CH) (1),CpCo(S2C2B10H9)[H2CC(C24H16O4)C≡CH] (2),CpCo(S2C2B10H9)[H2CC(C4H2S)Br] (3),和 CpCo(S2C2B10H9)[H2CC(C4H2S)C≡CH] (4)。化合物1~4的结构中都发生了金属诱导B-H键活化并生成了新的C-B键。在Co16e与L4的反应中,还得到了两分子炔烃以头对头二聚插入到金属中心的18电子化合物CpCo(S2C2B10H9)[HC≡C(C4H2S)C=CH-CH=C(C4H2S)C≡CH] (5)。上述化合物通过NMR、IR、MS、元素分析等方法进行表征。
关键词: 钴硫16e化合物  二炔烃  B-H键活化
基金项目: 
Abstract: The reactions of the 16e half-sandwich complex CpCo[S2C2(B10H10)] (Co16e) with 1,4-diethynylbenzene (L1), 3′,6-diethynyl-1,1′-binaphthyl-2,7′-diyl diacetate (L2), 2-bromo-5-ethynylthiophene (L3), and 2,5-diethynyl-thiophene (L4) lead to 18e mononuclear complexes CpCo(S2C2B10H9)(H2CCPhC≡CH) (1), CpCo (S2C2B10H9)[H2CC(C24H16O4)C≡CH] (2), CpCo(S2C2B10H9)[H2CC(C4H2S)Br] (3), and CpCo(S2C2B10H9)[H2CC(C4H2S)C≡CH] (4), respe-ctively. In all of the products the metal-induced B-H activation has occurred that leads to a new C-B bond. In the case of L4, CpCo(S2C2B10H9)[HC≡C(C4H2S)C=CH-CH=C(C4H2S)C≡CH] (5) is generated as well, in which alkyne is twofold inserted into a Co-S bond. All these products 1~5 have been characterized by NMR, IR, mass spectro-metry and elemental analysis.
Keywords: 16e cobalt complex  diyne  B-H activation
 
摘要点击次数:  2183
全文下载次数:  1917
徐智伟,韩 磊,杨震洲,沈旭杰,燕 红.含碳硼烷半夹心型钴硫16电子化合物与二炔烃的反应性研究[J].无机化学学报,2011,27(9):1669-1674.
查看全文  查看/发表评论  下载PDF阅读器
Support information: