Anion directed control of supramolecular structure in silver complexes through weak interactions

CrystEngComm ◽  
2012 ◽  
Vol 14 (17) ◽  
pp. 5394 ◽  
Author(s):  
Jayne L. Gulbransen ◽  
Christopher M. Fitchett
Keyword(s):  
Supramolecular Structure ◽  
Weak Interactions ◽  
Silver Complexes

Argentophilic Interactions in Two AgI Complexes of 3-(2-(Pyridin-4-yl)ethyl)pentane-2,4-dione, a Promising Ditopic Ligand

Crystals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 414
Author(s):  
Steven van Terwingen ◽  
Ulli Englert
Keyword(s):  
Supramolecular Structure ◽  
Silver Complexes ◽  
Bridging Ligands ◽  
Counter Ions ◽  
Additional Coordination ◽  
Enol Tautomer ◽  
Argentophilic Interactions ◽  
Interionic Interactions ◽  
Linear Coordination ◽  
Ditopic Ligand

Reactions of 3-(2-(pyridin-4-yl)ethyl)pentane-2,4-dione (HacacPyen) with AgPF6 and AgBF4 afforded cationic silver complexes [Ag(HacacPyen)2]+ with essentially linear coordination of the Ag I cation by two pyridine N atoms. Rather unexpectedly, the HacacPyen ligands in the PF6- salt 1 adopt the diketo form, in contrast to the uncoordinated HacacPyen molecule, whereas the corresponding BF4- salt 2 and the majority of 3-substituted acetylacetones crystallizes as the enol tautomer. In both compounds 1 and 2, complex cations aggregate via short Ag...Ag interactions to pairs. These contacts amount to 3 . 21 Å in 1 and 3 . 26 Å or 3 . 31 Å in 2. As they are unsupported by any additional bridging ligands and correspond to the closest interionic interactions between neighbouring complex cations, they may be addressed as argentophilic interactions. The PF6- anions in 1 and the BF4- counter ions in 2 are involved in long and presumably electrostatic Ag...F contacts of ca. 2 . 9 Å. Additional coordination between Ag I and keto O atoms of symmetry-equivalent ligands occurs in 1 and leads to an extended two-periodic supramolecular structure.

Weak Interactions in Silver Complexes of 15-Crown-5

1998 ◽  
Vol 10 (1) ◽  
pp. 155-158 ◽  
Author(s):  
Paul D. Prince ◽  
Jonathan W. Steed
Keyword(s):  
Weak Interactions ◽  
Silver Complexes

Two [Ln4] molecular rings folded as compact tetrahedra

2020 ◽  
Vol 49 (21) ◽  
pp. 7182-7188
Author(s):  
Jorge Salinas-Uber ◽  
Leoní A. Barrios ◽  
Olivier Roubeau ◽  
Guillem Aromí
Keyword(s):  
Weak Interactions ◽  
Molecular Rings

A new highly photo-switchable ligand furnishes supramolecular tetrahedral nanomagnets with Ln(iii) ions (Ln = Dy, Tb). Intramolecular weak interactions define the conformation of the ligand, quenching the photochromic activity.

BETA DECAY OPENS THE WAY TO WEAK INTERACTIONS

1982 ◽  
Vol 43 (C8) ◽  
pp. C8-261-C8-300
Author(s):  
E. Amaldi
Keyword(s):  
Beta Decay ◽  
Weak Interactions ◽  
The Way
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