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DOI: 10.1039/A809696A (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 615-622

Synthesis and crystal structures of cationic lanthanide(III) monoporphyrinate complexes

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Wai-Kwok Wong, Lilu Zhang, Wing-Tak Wong, Feng Xue and Thomas C. W. Mak

Abstract

Reactions of an excess of Ln[N(SiMe3)2]3·x[LiCl(THF[hair space])3], generated in situ from the reaction of anhydrous LnCl3 with 3 equivalents of Li[N(SiMe3)2] in tetrahydrofuran, with 5,10,15,20-tetrakis(p-methoxyphenyl)porphyrin (H2TMPP) in refluxing tetrahydrofuran–bis(2-methoxyethyl) ether solution (1∶6 v/v) gave the cationic monoporphyrinate complexes [LnIII(TMPP)(H2O)3]Cl (Ln = Yb; 1, Er, 2, or Y 3), and with 5,10,15,20-tetrakis(p-tolyl)porphyrin (H2TTP) gave [YbIII(TTP)(H2O)2(THF)]Cl 4. The structures of compounds 1–4 have been established by X-ray crystallography. Metathesis of 1 with an excess of AgBF4 gave the unexpected neutral monoporphyrinate complex [AgII(TMPP)] 5 whose structure was also determined. Compound 1 catalysed the cyclotrimerization of phenyl isocyanate.

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