Sterically protected diethynyl(2,4,6-tri-t-butylphenyl)phosphines and (2,4,6-tri-t-butylphenyl)bis(4-trimethylsilyl-1,3-butadiynyl)phosphine were prepared and their structures were analyzed by X-ray crystallography. The aromatic rings in these molecules are distorted to boat or more likely envelope forms in the crystals. Large distortion in the –P–C≡C– moieties was also observed.
制备了受立体保护的二
乙炔基(2,4,6-三丁基苯基)膦和(2,4,6-三丁基苯基)双(4-三甲基
硅基-1,3-
丁二炔基)膦,并通过 X 射线晶体学分析了它们的结构。这些分子中的芳香环在晶体中变形为船形或更可能是包络形。此外,还观察到 -P-C≡C- 分子发生了较大的畸变。