Metallkomplexe mit Tetrapyrrol-Liganden, XXXI [1]. Neutrale und anionoide Bisporphinate des Gers und Praseodyms / Metal Complexes with Tetrapyrrole Ligands, XXXI [1]. Neutral and Anionoid Bisporphinates of Cerium and Praeseodymium

Johann W. Buchler, Heinz-Günter Kapellmann, Martina Knoff, Kiong-Lam Lay, Stefan Pfeifer
1983 Zeitschrift für Naturforschung. B, A journal of chemical sciences  
The preparation of the lanthanoid bisporphinates, bis[meso-tetra(p-tolyl)porphinato]-cerium(IV) [Ce(TTP)2**] and bis[meso-tetra(p-tolyl)porphinato]hydrogenpraseodymium-(III) [PrH(TTP)2] from Ce(acac)3 and Pr(acac)3 in boiling 1,2,4-trichlorobenzene is described. Ce(TTP)2 is a diamagnetic and rather inert CeIV derivative, PrH(TTP)2 is a paramagnetic PrIII complex and may be deprotonated to give the anion [Pr(TTP)2]- which is characterized by conductivity measurements, electrophoresis, and
more » ... on of its tetra(n-butyl)ammonium or tetraphenylarsonium salt. The compounds are identified by UV/VIS, IR, 1H NMR, and mass spectra. The data are consistent with a sandwich-type square antiprismatic array of the two porphinate disks about the CeIV or PrIII ion as found earlier in the bis-phthalocyaninates U(Pc)2 or NdH(Pc)2.
doi:10.1515/znb-1983-1104 fatcat:hnpeyquf7rbblnut7jog4q2piu