pyramidal structures with trans nitriles in two basal positions. The bisnitrile complexes are active metathesis catalysts in the presence of 1 equiv of B(C6F5)3, consistent with the 14e monononitrile cationic complexes being the active species. The 14e complex required for metathesis is accessed most readily in bis PhF6CN complexes.
Mo(N- t- Bu)(Adene)(Me 2 Pyr) 2 ( 2a ) (Adene = 2-Adamantylidene, Me 2 Pyr =
2,5-二甲基吡咯烷) 和 Mo(NAr)(Adene)(Me 2 Pyr) 2 ( 2b ) (Ar = 2,6-二异丙基苯基) 通过将 LiMe 2 Pyr 添加到 Mo(N- t -Bu)(Adene)(Triflate) 2 (dme) 和 Mo(NAr)(Adene)(Triflate ) 2 (dme) 复合物。添加 1 当量的 [Me 2 PhNH][BAr F 4 ] (Ar F = 3,5-(CF 3 ) 2 C 6 H3 ) 和超过 2 当量的新
戊腈到 Mo(NC 6 F 5 )(Adene)(Me 2 Pyr) 2,然后是 1 当量的 H
MTOH(2,6-Mesityl 2 C 6 H 3 OH),导致分离黄色结晶 Mo(NC