102.05(3)° and Z= 4. Complexes 1 showed a conformational interconversion of the metallocyclic ring. Different amounts of cis and trans isomers were observed in the solutions of [[graphic omitted])L] compounds by NMR spectroscopy, depending on the size of the phosphine and the anionic ligands. With [[graphic omitted])P(CH2Ph)3}] only the cis product is obtained. The ionic compounds [[graphic omitted])(PMe2Ph)2]BF4
复合物的反式- [[图形省略])L] [L = PME 2博士1a中,PET 3 1B,P(CH 2 PH)3 1C或PPH 3 1D ],和[[图形省略])} 2 ]的含制备了双齿阴离子
配体o -C 6 H 4 CH 2 PPh 2(PC )。1c的分子结构已通过单晶X射线晶体学方法确定:空间群P 2 1 / c,a = 20.641(6),b= 9.794(3),c= 17.047(5)Å,β= 102.05(3)°,Z= 4。配合物1显示出
金属环的构象互变。根据膦和阴离子
配体的尺寸,通过NMR光谱法在[[省略图示])L]化合物的溶液中观察到不同量的顺式和反式异构体。使用[[省略图示])P(CH 2 Ph)3 }],仅获得顺式产物。离子化合物[[省略图示])(PMe 2 Ph)2 ] BF 4和[[无图示])(MeCN)P(CH 2 Ph)3 }] BF在游离
配体的存在下,通过[[省略图示]]与1当量的TIBF