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• W2078288818 startingPage "1177" @default.
• W2078288818 abstract "Metal Complexes with Tetrapyrrole Ligands, LX. – Pseudo Sandwich Complexes: Complexes of Metal(III) and -(IV) Ions with Porphyrin and Schiff-Base Ligands The synthesis of novel metal complexes with a porphyrinate, (P)2–2), and an ethylenebis(salicylidenealdiminate) or similar tetradentate open chelate, (L-4)2−, as ligands is described. Their general formula [M(P)(L-4)]n is realized with n = o and M = ZrIV or HfIV or n = −1 with M = YIII or TbIII; in the latter, an additional Li+ ion warrants electroneutrality. These complexes are prepared from the metal monoporphyrinates MIV(P)X2 or MIII(P)X (X = acetylacetonate) and the corresponding Schiff-base derivatives, H2(L-4) or Li2(L-4), respectively. 1H-NMR data prove the square antiprismatic configuration of the ZrIV species at 295 K which is abandoned at 373 K when the (P)2− and (L-4)2− freely rotate about each other. Electrochemical measurements show that oxidations and reductions involve only the porphyrin ligands. The redox potentials experience shifts that can be understood in terms of the Hammett parameters σ of the substituents at (L-4)2−." @default.
• W2078288818 created "2016-06-24" @default.
• W2078288818 creator A5060418762 @default.
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• W2078288818 date "1991-11-12" @default.
• W2078288818 modified "2023-10-16" @default.
• W2078288818 title "Metallkomplexe mit Tetrapyrrol-Liganden, LX. Pseudo-Sandwichkomplexe: Komplexe drei- und vierwertiger Metall-Ionen mit Porphyrin- und Schiff-Base-Liganden" @default.
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• W2078288818 doi "https://doi.org/10.1002/jlac.1991199101202" @default.
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