单(胍基)tetraplatinum复杂[PT 4(μ-OCOCH 3)7(μ-(TOLN)2 CN我镨2)](5:托尔= C 6 H ^ 4 ME-4),通过处理制备的Pt 4(μ-OCOCH 3)8 ](1)用过量的量的N,N-双(p -甲苯基) - ñ ''-diisopropylguanidine(图4a)。5的胍基部分与N,N′-双(芳基)甲am的取代反应(10:芳基= C 6ħ 4 ME-4,C 6 H ^ 4来-4和C 6 H ^ 4 OME-4)通过混合配体的中间体,反式- [PT 4(μ-OCOCH 3)6(μ-(TOLN)2 CN我Pr 2)(μ-ArNCHNAr)](11:Tol = C 6 H 4 Me-4; Ar = C 6 H 4 Me-4,C 6 H 4 COMe-4和C 6 H 4OME-4),作为一个循序渐进的替代机构,得到相应的单(脒基)tetraplatinum络合物[PT
Redox tuning of the dimolybdenum compounds at the ligand periphery: a direct correlation with the Hammett constant of the substituents
作者:Chun Lin、John D. Protasiewicz、Eugene T. Smith、Tong Ren
DOI:10.1039/c39950002257
日期:——
Oxidation potentials Of [Mo2(ArNCHNAr)4](Ar = aryl), a direct measure of the HOMO (δ orbital) energy, correlate with the Hammett constant of aryl substituents, while both structural and spectroscopic data indicate that the valence structure around the dinuclear core is unperturbed.