synthesis of bis(isopropylimino)cyclohexane is described, but it was found that a tautomeric imine-enamine compound is formed which coordinates to palladium(II) in a monodentate fashion, which could not be converted to a chelating ligand. The structures of p Tol-BIAN and Pd(Me)Cl(o,o′-i Pr2C6H3-BIAN) in the solid state were determined by X-ray diffraction. p Tol-BIAN is monoclinic, space group C2,
描述了刚性双齿
氮配体双-(
苯基亚
氨基)
樟脑(Ph-BIC)和一系列双(芳基))啶(Ar-BIAN)的合成和表征。这些
配体是在
樟脑醌或
苯醌与相应的(取代的)
苯胺在ZnCl 2或NiBr 2的存在下反应,然后在随后的步骤中除去
金属盐而合成的。NDDO在p Tol- BIAN上的计算表明,该
配体的电子性质与开链类似物Ph-
DAB(
DAB = 1,4-diaza-1,3-butadiene)相当。Ar-BIAN
配体的
亚胺N原子上的芳族基团定向在双(亚
氨基)ac基平面之外,导致形成顺式和反式为异构体的邻位-取代的衍
生物ö -MeC 6 ħ 4 -BIAN和OI PRC 6 ħ 4 -BIAN。在溶液中观察到这些
配体的一种异构体,但是与Pd(Me)Cl片段配位后,由于形成了两种异构体,因此同时存在顺式和反式形式。此外,描述了尝试合成双(
异丙基亚
氨基)
环己烷,但是发现形成了互变异构的
亚胺-
烯胺化合物,其