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A Strategy for the Synthesis of Phosphorus‐Containing Macrocycles—Ligands for Exceptional Coordination Geometries
Author(s) -
Ekici Sahir,
Nieger Martin,
Glaum Robert,
Niecke Edgar
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200390132
Subject(s) - protonation , chemistry , electrophile , ring (chemistry) , alkali metal , atom (system on chip) , crystallography , crystal structure , stereochemistry , coordination complex , metal , combinatorial chemistry , ion , catalysis , organic chemistry , computer science , embedded system
The shape of rings to come! The novel synthetic strategy for macrocycles containing differently functionalized ligands is based on a coupling reaction between two alkali‐metal‐fixed carbanionic centers I and two specifically connected, electrophilic phosphorus centers II (see scheme, Do=donor atom). Twofold PC‐bond formation first results in a metallamacrocycle III , which is subsequently converted by protonation into the neutral ring system IV . The formation of unprecedented coordination geometries of Cu I and Ni 0 centers is shown by the X‐ray crystal structures of the complexes V .