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Syntheses and X‐ray Crystal Structures of 48‐membered Fluoro‐Macrocycles and an Investigation of their Coordination Chemistry
Author(s) -
Plenio Herbert,
Hermann Jörg
Publication year - 1998
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(199805)624:5<792::aid-zaac792>3.0.co;2-f
Subject(s) - chemistry , trigonal pyramidal molecular geometry , crystal structure , crystallography , ligand (biochemistry) , deprotonation , pyridine , cyclophane , silver salts , stereochemistry , ion , medicinal chemistry , inorganic chemistry , biochemistry , receptor , organic chemistry
The reactions of 2,11‐diaza‐difluoro‐m‐[3.3]‐cyclophane with 1,3‐bis(bromomethyl)‐2‐fluorobenzene or 2,6‐bis(bromomethyl)‐pyridine lead in one step to the respective 3 + 3‐addition products 4 (yield 11%) and 5 (yield 27%), both of which are 48‐membered macrocycles with nine or six potential CF‐donor units. The nonafluoro ligand 4 appears not to form stable aggregates with alkali metal ions, while 5 gives a complex with two silver ions, which both are located on the inner periphery of the macrocyclic cavity. The coordination sphere of the two silver ions consists of three nitrogen atoms in a distorted trigonal‐planar (Y‐shape) environment as evidenced by an X‐ray crystal structure. One of the Ag + displays a short contact to an oxygen atom of the CF 3 SO 3 – counter ion, leading to a trigonal‐pyramidal N 3 O‐environment.