Intramolecular Dynamics of Asymmetric Lanthanide(III) Porphyrin Sandwich Complexes in Solution

✍ Scribed by Sergey P. Babailov; Athanassios G. Coutsolelos; Alexander Dikiy; Georgios A. Spyroulias

• Book ID: 101346854
• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 224 KB
• Volume: 2001
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/1099-0682(20011)2001:1<303::aid-ejic303>3.0.co;2-y

✦ Synopsis

Temperature dependencies of the 1 H NMR spectra of asymmetric double-decker complexes of DyH(oep)(tpp) (I) and LuH(oep)(tpp) (II), where tpp is tetraphenylporphyrin and oep is octaethylporphyrin, have been analyzed. The kinetic and thermodynamic parameters for intramolecular phenyl ring rotations have been determined. The rotation in (I) is characterized by k(298 K) = 11.4 s -1 , ∆H ‡ = 48.0±6.0 kJ mol -1 , while in (II) the derived parameters are found to be