Croconamides: a new dual hydrogen bond donating motif for anion recognition and organocatalysis

2017 ◽  
Vol 15 (13) ◽  
pp. 2784-2790 ◽  
Author(s):  
Anne Jeppesen ◽  
Bjarne E. Nielsen ◽  
Dennis Larsen ◽  
Olivia M. Akselsen ◽  
Theis I. Sølling ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Anion Recognition ◽  
Anion Receptors ◽  
The Family

We introduce bis-aryl croconamides as a new member in the family of dual hydrogen bonding anion receptors.

scholarly journals Selective perrhenate recognition in pure water by halogen bonding and hydrogen bonding alpha-cyclodextrin based receptors

2017 ◽  
Vol 53 (27) ◽  
pp. 3866-3869 ◽  
Author(s):  
Stuart P. Cornes ◽  
Mark R. Sambrook ◽  
Paul D. Beer
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Pure Water ◽  
Aqueous Media ◽  
Halogen Bonding ◽  
Anion Receptors ◽  
Hydrogen Bond Donor

Alpha-cyclodextrin based anion receptors containing halogen and hydrogen bond donor motifs display selective association of perrhenate in neutral aqueous media.

Contrasting anion recognition behaviour exhibited by halogen and hydrogen bonding rotaxane hosts

2015 ◽  
Vol 13 (9) ◽  
pp. 2582-2587 ◽  
Author(s):  
Stuart P. Cornes ◽  
Charles H. Davies ◽  
David Blyghton ◽  
Mark R. Sambrook ◽  
Paul D. Beer
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Halogen Bond ◽  
Anion Recognition ◽  
Dihydrogen Phosphate ◽  
Donor Group ◽  
Hydrogen Bond Donor

A [2]rotaxane anion host that switches selectivity from dihydrogen phosphate to the halides upon substituting a hydrogen bond donor group for a halogen bond donor group within the axle component is described.

scholarly journals Anion receptors containing thiazine-1,1-dioxide heterocycles as hydrogen bond donors

2010 ◽  
Vol 6 ◽  
Author(s):  
Hong-Bo Wang ◽  
James A Wisner ◽  
Michael C Jennings
Keyword(s):  
Hydrogen Bond ◽  
Crystal Structures ◽  
Anion Recognition ◽  
Anion Receptors ◽  
X Ray ◽  
Phenyl Rings ◽  
Hydrogen Bond Donors

The synthesis, X-ray crystal structures and anion recognition properties of two receptors containing thiazine-1,1-dioxide heterocycles as hydrogen bond donating subunits are reported. The newly synthesized receptors display much different anion selectivities in acetone-d 6 than N,N′-diphenyl-1,3-disulfonamidobenzene that was used as a comparison. The selectivity exhibited by one of the new receptors for chloride anions can be attributed to greater steric demand in the cleft formed, in part, by its terminal phenyl rings; an effect that is absent in the comparison receptor.

Interaction of Gold Atom with Clusters of Water: Few Computational Mise-En-Scènes with Hydrogen Bonding Motif

2008 ◽  
Vol 73 (11) ◽  
pp. 1457-1474 ◽  
Author(s):  
Eugene S. Kryachko
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Computational Model ◽  
Photoelectron Spectroscopy ◽  
Water Clusters ◽  
Gold Atom ◽  
Proton Acceptor ◽  
Anion Photoelectron Spectroscopy ◽  
Relationship Of ◽  
First Time

The present work outlines the fair relationship of the computational model with the experiments on anion photoelectron spectroscopy for the gold-water complexes [Au(H2O)1≤n≤2]- that is established between the auride anion Au- and water monomer and dimer thanks to the nonconventional hydrogen bond where Au- casts as the nonconventional proton acceptor. This work also extends the computational model to the larger complexes [Au(H2O)3≤n≤5]- where gold considerably thwarts the shape of water clusters and even particularly breaks their conventional hydrogen bonding patterns. The fascinating phenomenon of the lavish proton acceptor character of Au- to form at least six hydrogen bonds with molecules of water is computationally unveiled in the present work for the first time.

A non-classical hydrogen bond in the molybdenum arene complex [η6-C6H5C6H3(Ph)OH]Mo(PMe3)3: evidence that hydrogen bonding facilitates oxidative addition of the O–H bond

2002 ◽  
pp. 2644-2645 ◽  
Author(s):  
Tony Hascall ◽  
Mu-Hyun Baik ◽  
Brian M. Bridgewater ◽  
Jun Ho Shin ◽  
David G. Churchill ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Oxidative Addition ◽  
Arene Complex ◽  
Classical Hydrogen Bond

Rietveld refinement of the cocrystal 2,4-dihydroxybenzoic acid–N′-(propan-2-ylidene)nicotinohydrazide (1/1)

2012 ◽  
Vol 68 (9) ◽  
pp. o335-o337 ◽  
Author(s):  
Saul H. Lapidus ◽  
Andreas Lemmerer ◽  
Joel Bernstein ◽  
Peter W. Stephens
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Powder Diffraction ◽  
Supramolecular Assembly ◽  
Covalent Bond ◽  
Analytical Tool ◽  
Powder Diffraction Data ◽  
Dihydroxybenzoic Acid ◽  
Bond Forming ◽  
Hydrogen Bond Interactions

A further example of using a covalent-bond-forming reaction to alter supramolecular assembly by modification of hydrogen-bonding possibilities is presented. This concept was introduced by Lemmerer, Bernstein & Kahlenberg [CrystEngComm(2011),13, 55–59]. The title structure, C9H11N3O·C7H6O4, which consists of a reacted niazid molecule,viz.N′-(propan-2-ylidene)nicotinohydrazide, and 2,4-dihydroxybenzoic acid, was solved from powder diffraction data using simulated annealing. The results further demonstrate the relevance and utility of powder diffraction as an analytical tool in the study of cocrystals and their hydrogen-bond interactions.

Supramolecular assembling using synthons with NH—CO(S)—CS—NH and NH—CO—CO—NH functionalities: crystal structures of (S,S)-N,N′-monothiooxalyldileucine methyl ester and its dithio analogue

2004 ◽  
Vol 60 (1) ◽  
pp. 90-96 ◽  
Author(s):  
Biserka Kojić-Prodić ◽  
Berislav Perić ◽  
Zoran Štefanić ◽  
Anton Meden ◽  
Janja Makarević ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Methyl Ester ◽  
Crystal Structures ◽  
Hydrogen Bond Network ◽  
Asymmetric Unit ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Bond Network ◽  
Bonding Systems

To compare the structural properties of oxalamide and thiooxalamide groups in the formation of hydrogen bonds suitable for supramolecular assemblies a series of retropeptides was studied. Some of them, having oxalamide bridges, are gelators of organic solvents and water. However, retropeptides with oxygen replaced by the sp 2 sulfur have not exhibited such properties. The crystal structures of the two title compounds are homostructural, i.e. they have similar packing arrangements. The monothio compound crystallizes in the orthorhombic space group P212121 with two molecules in the asymmetric unit arranged in a hydrogen-bond network with an approximate 41 axis along the crystallographic b axis. However, the dithio and dioxo analogues crystallize in the tetragonal space group P41 with similar packing patterns and hydrogen-bonding systems arranged in agreement with a crystallographic 41 axis. Thus, these two analogues are isostructural having closely related hydrogen-bonding patterns in spite of the different size and polarity of oxygen and sulfur which serve as the proton acceptors.

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