Conversely, the neutral ligand LH reacts with [PdCl2(PhCN)2] to give the 20-membered palladacycle, [Pd2Cl4μ-HOC6H2(CH2PzMe2)2-2,6-Me-4-κN,N}2] (4). 2 and 3 are structural isomers and rigid molecules, whereas 1 and 4 are fluxional, as shown by their 1H NMR spectra. Hence, the dynamic behaviors of 1 and 4 were studied by variable-temperature 1H NMR methods and are proposed to be interconversion processes:
通过2,6-双[(二甲基
氨基)甲基] -4-甲基
苯酚与3,5-二甲基
吡唑的反应容易地合成2,6-双(3,5-二甲基
吡唑酰基甲基)-4-甲基
苯酚LH。LH的三
钠配合物的X射线结构显示出类似苯的平面Na 3 O 3环,具有更短的键(2.181–2.185Å)和更长的键(2.244–2.263Å)。阴离子
配体的反应大号用[的PdCl 2(COD)],得到3的Pd(II)配合物:[
钯OC 6 H ^ 2(CH 2的
PZ ME2)2 -2,6-ME-4-κ Ñ,ö } 2 ](1),[的PdClμ-OC 6 H ^ 2(CH 2的
PZ ME2)2 -2,6-ME-4-κ Ñ,ø,Ñ }] 2(2),和[的PdCl 2 μ-OC 6 ħ 2(CH 2的
PZ ME2)2 -2,6-ME-4-κ ñ,ø,ñ } 2的Pd](3)(
PZ ME2 = 3,5-二甲基)。相反,中性
配体LH与[PdCl 2