Bis(alkyl) Sc and Y Complexes Supported by Tri‐ and Tetradentate Amidinate Ligands: Synthesis, Structure, and Catalytic Activity in α‐Olefin and Isoprene Polymerization
作者:Natalia Yu. Rad'kova、Grigorii G. Skvortsov、Anton V. Cherkasov、Georgy K. Fukin、Tatyana A. Kovylina、Anatoly M. Ob'edkov、Alexander A. Trifonov
DOI:10.1002/ejic.202100238
日期:2021.6.25
amidine (2,6-Me2C6H3)N=C(tBu)−NH(C6H4−2-OMe) (1) or (2-MeO−C6H4)N=C(tBu)−NH(C6H4−2-OMe) (2). The reaction of amidine 2 with equimolar amount of Y(CH2C6H4−2-NMe2)3 in toluene unexpectedly results in the addition of N,N-dimethylaminobenzyl group to C=N bond of one amidinate fragment, ligand disproportionation and the formation of novel bis(amide)amidinate complex [(2-OMe−C6H4N)2C(tBu)CH2C6H4−2-NMe2]Y[(2-OMe−C6H4N)2C(tBu)]
双(烷基)络合物[(2,6-Me 2 C 6 H 3 )NC(tBu)N(C 6 H 4 -2-OMe)]M(CH 2 C 6 H 4 -2-NMe 2 ) 2 ( M=Sc ( 4 ), Y ( 5 )), [(2-OMe-C 6 H 4 N) 2 C(tBu)]Y(CH 2 SiMe 3 ) 2 (THF) 2 ( 6 ),由N支持,N,O-三齿 ( 4 , 5 ) 和 N,N,O,O-四齿 ( 6)) 脒配体通过烷烃消除法与三(烷基)稀土物质 M(R) 3 X n (R=Me 3 SiCH 2 , X=THF, n=2; R=CH 2 C 6 H 4 -2-NMe 2 , n=0) 与一当量脒 (2,6-Me 2 C 6 H 3 )N=C(tBu)-NH(C 6 H 4 -2-OMe) ( 1 ) 或 ( 2-MeO-C 6 H 4 )N=C(tBu)-NH(C 6 H 4 -2-OMe)