Kinetico-Mechanistic Insights on the Assembling Dynamics of Allyl-Cornered Metallacycles: The PtN<sub>py</sub>Bond is the Keystone
作者:Inmaculada Angurell、Montserrat Ferrer、Albert Gutiérrez、Manuel Martínez、Mercè Rocamora、Laura Rodríguez、Oriol Rossell、Yvonne Lorenz、Marianne Engeser
DOI:10.1002/chem.201403467
日期:2014.10.27
The square‐like homo‐ and heterometallamacrocycles [Pd(η3‐2‐Me‐C3H4)(Ln)2}2M(dppp)}2](CF3SO3)6 (dppp=1,3‐bis(diphenylphosphino)propane) and [Pd(η3‐2‐Me‐C3H4)(L1)2}2M(PPh3)2}2](CF3SO3)6 [py=pyridine, M=Pd, Pt, Ln=4‐PPh2py (L1), 4‐C6F4PPh2py (L2)] containing allyl corners were synthesised by antisymbiotic self‐assembly of the different palladium and platinum metallic corners and the ambidentate N
正方形状均聚物和heterometallamacrocycles [的Pd(η 3 -2-ME-C 3 H ^ 4)(大号Ñ)2 } 2 M(DPPP)} 2 ](CF 3 SO 3)6(DPPP = 1 1,3-双(二苯基膦基)丙烷)和[的Pd(η 3 -2-ME-C 3 H ^ 4)(大号1)2 } 2 M(PPH 3)2 } 2 ](CF 3 SO 3)6 [py =吡啶,M = Pd,Pt,L n= 4‐PPh 2 py(L 1),4‐C 6 F 4 PPh 2 py(L 2)]含有烯丙基的角是通过不同钯和铂金属角和歧义的N,P配体的抗共生自组装合成的。所有合成的组件在溶液中都显示出复杂的动力学行为,其速率取决于不同构件的电子和/或位阻性质。通过NMR线形分析对其中一些组件的动力学进行了动力学研究,以确定相应的热活化参数。与钯类似物相比,含铂吡啶的物种既提高了热力学稳定性,