Synthesis and characterisation of sterically bulky lithium amidinate and bis-amidinate complexes
作者:Robert J. Baker、Cameron Jones
DOI:10.1016/j.jorganchem.2005.08.039
日期:2006.1
corresponding lithium bis-amidinate complex, [1,4-Li(THF)2(PriN)2C}22,3,5,6-C6(p-C6H4But)4}], which incorporate a sterically bulky tetraarylphenylene spacer unit have also been prepared. In solution, the amidine undergoes facile inter-conversion between its E-syn:E-syn and Z-syn:E-syn isomers. The bis-amidinate complex has been structurally characterised and shown to chelate both of its lithium centres
trip的合成与表征,(tript)C(NR)(NHR),R = Pr i或环己基(Cy),tript = Triptycenyl和a基锂络合物[Li(THF)2 (tript)C(描述了在the或a基主链碳上带有庞大的三烯基取代基的NR)2 }]。NMR光谱研究已显示这些对仅作为其存在ž -顺式在溶液中的异构体形式,由于triptycenyl部分的空间位阻效应。两个实施例的X射线晶体结构证实了固态也是这种情况。一种新的双-配体1,4-(Pr i HN)(Pr i N)C} 2 2,3,5,6-C 6(p-C 6 H 4 Bu t)4 }和相应的双-酰胺锂络合物[1,4- Li(THF)2(Pr i N)2 C} 2 2,3,5,6-C还已经制备了6(p -C 6 H 4 Bu t)4 }],其结合了空间上大体积的四芳基亚苯基间隔单元。在溶液中,am在其E - syn:E - syn和Z