scholarly journals Intramolecular N–H⋯Cl hydrogen bonds in the outer coordination sphere of a bipyridyl bisurea-based ligand stabilize a tetrahedral FeLCl2 complex

2014 ◽  
Vol 50 (54) ◽  
pp. 7173-7175 ◽  
Author(s):  
Jesse V. Gavette ◽  
Christina M. Klug ◽  
Lev N. Zakharov ◽  
Matthew P. Shores ◽  
Michael M. Haley ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Coordination Sphere ◽  
Intramolecular Hydrogen Bonding ◽  
Secondary Coordination Sphere ◽  
Chloride Ligands ◽  
Outer Coordination Sphere ◽  
Intramolecular Hydrogen

A bipyridyl-bisurea ligand coordinates a tetrahedral FeCl2 complex and demonstrates secondary coordination sphere influence through intramolecular hydrogen bonding to the chloride ligands.

scholarly journals Intramolecular Hydrogen Bonding 2021

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6319
Author(s):  
Mirosław Jabłoński
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Intermolecular Interactions ◽  
Intramolecular Hydrogen Bonding ◽  
The Rich ◽  
Intramolecular Hydrogen

Undoubtedly, hydrogen bonds occupy a leading place in the rich world of intermolecular interactions [...]

Vibrational Spectroscopy of Certain Polymaleic- and Polyacrylic-Based Mesomorphic Polymers

1995 ◽  
Vol 49 (9) ◽  
pp. 1311-1316 ◽  
Author(s):  
Dimitris Tsiourvas ◽  
Constantinos M. Paleos ◽  
Jane Anastassopoulou ◽  
Theophile Theophanides
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Liquid Crystalline ◽  
Polymeric Materials ◽  
Intramolecular Hydrogen Bonding ◽  
Polar Group ◽  
Smectic Phases ◽  
Carboxylic Groups ◽  
Ft Ir ◽  
Intramolecular Hydrogen

The FT-IR/ATR technique has been employed in the investigation of the forces leading to the organization of a number of polymeric materials exhibiting thermotropic liquid crystalline character. Two types of compounds have been studied, i.e., one bearing the carboxylic polar group near the main chain and the other at the end of the side chain. Intermolecular and intramolecular hydrogen bonding between the carboxylic groups was found to lead to the formation of “facing” and “sideways” structures. Enhanced stability of these supramolecular structures was obtained by the presence of intramolecular hydrogen bonds between the amide groups, resulting in the formation of smectic phases. Furthermore, it has been found that the strengthening of hydrogen bonding between carboxylic groups is associated with a weakening of hydrogen bonds between the amide groups.

scholarly journals A trigonal coordination of Au(I) phosphane complexes stabilized by O–H⋯X (X = Cl–, Br–, I–) interactions

2021 ◽  
Author(s):  
Petra Gründlinger ◽  
Cezarina Cela Mardare ◽  
Thorsten Wagner ◽  
Uwe Monkowius
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Hydrogen Bonds ◽  
Intramolecular Hydrogen Bonding ◽  
Molecular Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Standard Linear ◽  
Intramolecular Hydrogen ◽  
Linear Coordination

AbstractIn this work, we show that intramolecular hydrogen bonding can be used to stabilize tri-coordinated phosphane-gold(I) complexes. Two molecular structures of 2-(diphenylphosphino)benzoic acid (L) coordinated to a gold(I) atom were determined by single-crystal X-ray diffraction. The linear L–Au–Br shows a standard linear coordination and dimerizes via hydrogen bonds of the carboxylic acid. Upon addition of two additional phosphane ligands the complex [L3Au]X is formed which is stabilized by three intramolecular –C(O)O–H…X hydrogen bonds as proven by the X-ray structure of the respective chlorido-complex. X-ray powder diffractograms suggest the same structure also for X– = Br– and I–. Graphic abstract

On the Influence of Intra - and Inter-Molecular Hydrogen Bonding on the Excited State Lifetime of Indigo Dyes

1977 ◽  
Vol 32 (8) ◽  
pp. 876-878 ◽  
Author(s):  
W. Windhager ◽  
S. Schneider ◽  
F. Dörr
Keyword(s):  
Hydrogen Bonding ◽  
Excited State ◽  
Hydrogen Bonds ◽  
Molecular Hydrogen ◽  
Intramolecular Hydrogen Bonding ◽  
Excited State Lifetime ◽  
Internal Hydrogen ◽  
Solvent Molecules ◽  
Intramolecular Hydrogen ◽  
Indigo Dyes

Abstract It is shown that intramolecular hydrogen bonding can give rise to very fast nonradiative desactivation of the S1 -state of indigo dyes. In those derivatives, which lack the possibility of internal hydrogen bonds, hydrogen bonding to suitable solvent molecules can provide the channel for fast radiationless transitions. As a consequence, drastic effects on the S1 -state lifetime are observed both as a function of solvent and/or temperature.

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