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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 89, 1994 - Issue 1-4
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Original Articles

Ungewöhnliches 31P-NMR Verhalten von Phosphorylierten Calix[4]Arenen Beim Zusatz von Shift-Reagenzien

Burkhard Costisella Institut für Angewandte Chemie, Rudower Chaussee 5, 12484, Berlin-Adlershof, Germany
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Jörg Gloede Institut für Angewandte Chemie, Rudower Chaussee 5, 12484, Berlin-Adlershof, Germany
Pages 39-46 | Received 07 Apr 1994, Published online: 23 Sep 2006
 
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Abstract

The lanthanide-induced 31P-NMR shift for phosphorylated calix[4]arenes 1 and phosphoryl compounds 2–9 with Eu(FOD)3 and Yb(FOD)3 is described. It is noticeable that the shift behaviour of the cyclic and acyclic phosphate group of 1 is very different. This unusual behaviour is explained by a steric influence of the aromatic ring with or without tert. butyl group.

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