theoretical calculations. Radical properties of 2 are confirmed by EPR measurements that suggest the radical electron in 2 couples with (14)N (I = 1), (35/37)Cl (I = 3/2), and (31)P (I = 1/2) nuclei leading to multiple hyperfine lines. Hyperfine coupling parameters computed from DFT calculations are in good agreement with those of experimental values. Electronic distributions obtained from the theoretical calculations
由三
氯硅烷原位生成中间体二
氯甲
硅烷并插入二苯基
氯膦 (Ph2P-Cl) 的 P-Cl 键中,得到 Ph2P-SiCl3 (1)。在低温下,在 THF 中,环状烷基(
氨基)卡宾 (c
AACs)/KC8 对 1 进行单脱
氯反应,形成稳定的 Ph2P-Si(c
AAC·)Cl2 (2a,b) 自由基。化合物2a、b通过X射线单晶衍射、质谱法表征,并通过循环伏安法和理论计算进行研究。2 的自由基性质由 EPR 测量证实,表明 2 对中的自由基电子与 (14)N (I = 1)、(35/37)Cl (I = 3/2) 和 (31)P (I = 1/2) 核导致多条超细线。从 DFT 计算计算出的超精细耦合参数与实验值非常吻合。