Synthetic, Structural, and Solution Calorimetric Studies of Pt(CH<sub>3</sub>)<sub>2</sub>(PP) Complexes
作者:Dale C. Smith、Christopher M. Haar、Edwin D. Stevens、Steven P. Nolan、William J. Marshall、Kenneth G. Moloy
DOI:10.1021/om990962i
日期:2000.4.1
thermodynamically stable complexes. Additionally, the molecular structures of 1, Pt(Me)2(pype) (2), Pt(Me)2(dppf) (3), Pt(Me)2(diop) (4), Pt(Me)2(dppe) (6), Pt(Me)2(dpmcb) (9), and Pt(Me)2(Et2dppp) (13) have been determined by single-crystal X-ray diffraction. No correlation between the thermochemical results and the structural parameters, e.g, M−P distance (as observed in other systems), is apparent in this
配合物(COD)PTME的反应焓2(1 ; COD =η 4 -1,5-环辛二烯)具有广泛系列的二齿膦的(dpype,DPPF,迪奥普,DPPE,DPPB,DPPP,dpmcb,DEPE,DMPE, dcpce)已通过溶液量热法测量。所得配合物PtMe 2(PP)的相对稳定性由供体和双齿膦配体的咬合角/位阻性质共同决定。通常,良好的具有较小咬合角的σ供体配体会产生更热力学稳定的配合物。此外,1,Pt(Me)2(pype)(2),Pt(Me)2(dppf)(3),Pt(Me)的分子结构2(diop)(4),Pt(Me)2(dppe)(6),Pt(Me)2(dpmcb)(9)和Pt(Me)2(Et 2 dppp)(13)已确定单晶X射线衍射。在此类络合物中,热化学结果与结构参数(例如,MP距离(在其他系统中观察到))之间没有相关性。