Reduction of Dinitrogen to Ammonia at a Well-Protected Reaction Site in a Molybdenum Triamidoamine Complex
作者:Dmitry V. Yandulov、Richard R. Schrock
DOI:10.1021/ja020186x
日期:2002.6.1
ligand ([(RNCH2CH2)3N]3-) in which R is 3,5-(2,4,6-i-Pr3C6H2)2C6H3 (HexaIsoPropylTerphenyl or HIPT). The reaction between MoCl4(THF)2 and H3[HIPTN3N] in THF followed by 3.1 equiv of LiN(SiMe3)2 led to formation of orange [HIPTN3N]MoCl. Reduction of [HIPTN3N]MoCl with magnesium in THF under dinitrogen led to formation of salts that contain the [HIPTN3N]Mo(N2)}- ion. The [HIPTN3N]Mo(N2)}- ion can be oxidized
我们合成了三酰氨基胺配体 ([(RNCH2CH2)3N]3-),其中 R 是 3,5-(2,4,6-i-Pr3C6H2)2C6H3(六异丙基三联苯或 HIPT)。MoCl4(THF)2 和 H3[HIPTN3N] 在 THF 中反应,然后是 3.1 当量的 LiN(SiMe3)2,形成橙色的 [HIPTN3N]MoCl。[HIPTN3N]MoCl 在四氢呋喃中在氮气下用镁还原导致形成含有 [HIPTN3N]Mo(N2)}- 离子的盐。[HIPTN3N]Mo(N2)}- 离子可以被氯化锌氧化得到 [HIPTN3N]Mo(N2) 或质子化得到 [HIPTN3N]Mo-N=NH。已制备的其他相关化合物包括[HIPTN3N]Mo-N=NH2}+、[HIPTN3N]MoN、[HIPTN3N]Mo=NH}+和[HIPTN3N]Mo(NH3)}+。(阴离子通常是 B(3,5-(CF3)2C6H3)4}-