bridging-ethoxy or -ethylperoxy groups. The ethyl zinc complexes catalyze the Tishchenko reaction of benzaldehyde under solventless conditions affording benzyl benzoate. The reaction of ethyl zinc complexes with dioxygen and their catalytic behaviour in the Tishchenko reaction are affected by the electronic and steric factors of the triazapentadienyl ligand. [N(C3F7)C(Cy)N}2]ZnOOEt}2 is an excellent reagent
乙基
锌络合物[N (C 3 F 7)C(Dipp)N} 2 ] ZnEt,[N (C 3 F 7)C(Cy)N} 2 ] ZnEt,[N (CF 3)C(由2,4,6-Br 3 C 6 H 2)N} 2 ] ZnEt和[N (C 3 F 7)C(2,6-Cl 2 C 6 H 3)N} 2 ] ZnEt合成相应的1,3,5-三氮杂
戊二烯和
二乙基锌。X射线数据显示[N (C 3 F 7)C(Dipp)N} 2] ZnEt在
锌中心具有变形的三角形平面几何形状。所述triazapentadienyl
配体结合到
锌在κ 2 -mode。[N (C 3 F 7)C(Dipp)N} 2 ] ZnEt,[N (C 3 F 7)C(Cy)N} 2 ] ZnEt,[N (CF 3)C(2,4,6-Br 3 C 6 H 2)N} 2 ] ZnEt和[N (C 3 F 7)C(2,6-Cl 2 C