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Anion Control in Bipyridylsilver( I ) Networks: A Helical Polymeric Array
Author(s) -
Withersby Matthew A.,
Blake Alexander J.,
Champness Neil R.,
Hubberstey Peter,
Li WanSheung,
Schröder Martin
Publication year - 1997
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199723271
Subject(s) - ion , crystallography , ligand (biochemistry) , chemistry , stereochemistry , receptor , biochemistry , organic chemistry
A helical staircase structure is observed for the layers made from chains of alternating Ag I centers and pytz ligands in [Ag(pytz)(NO 3 )] ∞ (pytz = 3,6‐di‐(4‐pyridyl)‐1,2,4,5‐tetrazine). Decisive for the formation of this array—a view of the structure along the helical axis is shown on the right—is the anionic ligand NO − 3 , as shown by the comparison with the analogous PF − 6and BF − 4compounds. These two show parallel chains of alternating Ag I ions and pytz ligands held in pairs through weak AgAg contacts and π–π interactions between adjacent pytz ligands.