Hydrogen bonding of single acetic acid with water molecules in dilute aqueous solutions

2009 ◽  
Vol 52 (12) ◽  
pp. 2219-2225 ◽  
Author(s):  
Liang Pu ◽  
YueMing Sun ◽  
ZhiBing Zhang
Keyword(s):  
Hydrogen Bonding ◽  
Acetic Acid ◽  
Aqueous Solutions ◽  
Water Molecules ◽  
Dilute Aqueous Solutions

Coordination of Rhodium(III) in Dilute Aqueous Solutions in Presence of Chloride Anion

1985 ◽  
Vol 40 (12) ◽  
pp. 1319-1328 ◽  
Author(s):  
R. Caminiti ◽  
D. Atzei ◽  
P. Cucca ◽  
F. Squintu
Keyword(s):  
Raman Spectroscopy ◽  
Aqueous Solutions ◽  
Correlation Functions ◽  
Structural Information ◽  
Chloride Ions ◽  
Chloride Anion ◽  
Water Molecules ◽  
X Ray ◽  
Rhodium Atom ◽  
Dilute Aqueous Solutions

Dilute aqueous solutions of Rhodium (III) at the Cl1/Rh(III) ratios 4.86 and 10.7 have been X-ray examined. Octahedral Rh(H2O)63+ and Rh(H2O)3Cl3 complexes are the species which are consistent with the correlation functions and the structure functions. The average number of bonded chloride ions per Rhodium atom has been determined and the reliability of the structural information is critically examined.The influence of the temperature on the substitution of water molecules by chloride ions is confirmed by using Raman spectroscopy.

DYNAMICS IN PERTURBED VERY DILUTE AQUEOUS SOLUTIONS: THEORY AND EXPERIMENTAL EVIDENCE

2013 ◽  
Vol 27 (05) ◽  
pp. 1350005 ◽  
Author(s):  
TAMAR A. YINNON ◽  
VITTORIO ELIA
Keyword(s):  
Aqueous Solutions ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Self Organization ◽  
Water Molecules ◽  
Quantum Field ◽  
Electric Dipole Moments ◽  
Periodic Oscillations ◽  
Theoretical Predictions ◽  
Dilute Aqueous Solutions

Perturbed very dilute aqueous solutions are investigated by analyzing their electric conductivity (χ). Foci include titrations and quasi-periodic oscillations of χ spanning several months. The χ data reflect persistent dissipative supramolecular self-organization. This paper's successful consistent explanations of the χ measurements corroborate earlier quantum field theoretical predictions. For example: (1) Permanent polarization results from quantum electro-dynamical interactions mediated auto-ordering of water molecules and molecular aggregates which have electric dipole moments. (2) The aggregates are created by exciting very dilute aqueous solutions, generating long lasting (cold) vortices in crystalline-like-structured super-fluidic domains. These domains are only present when the concentration (C) is lower than a solute dependent transitions concentration (C trans ). Typically, C trans is of the order of 10-4 M or below.

scholarly journals Raman Spectroscopy for the Competition of Hydrogen Bonds in Ternary (H2O–THF–DMSO) Aqueous Solutions

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3666
Author(s):  
Liu ◽  
Zhang ◽  
Huang ◽  
Wu ◽  
Ouyang
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bond ◽  
Raman Spectroscopy ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Aqueous Solutions ◽  
Dimethyl Sulfoxide ◽  
Water Molecules ◽  
Bonding Theory ◽  
Hydrogen Bonded

The effects of hydrogen bonds on the molecular structure of water-tetrahydrofuran (H2O–THF), water-dimethyl sulfoxide (H2O–DMSO), and water-tetrahydrofuran-dimethyl sulfoxide (H2O–THF–DMSO) in binary aqueous solutions and ternary aqueous solutions were studied using Raman spectroscopy. The results indicate that in the binary aqueous solution, the addition of THF and DMSO will generate hydrogen bonds with water molecules, resulting in changes in the peak positions of S=O bonds and C–O bonds. Compared with the binary aqueous solutions, the hydrogen bonds between DMSO and THF, and the hydrogen bonds between DMSO and H2O in the ternary aqueous solutions are competitive, and the hydrogen bond competition is susceptible to water content. In addition, the formation of hydrogen bonds will destroy the fully hydrogen-bonded water and make it change to the partially hydrogen-bonded water. By fitting the spectra into the three Gaussian components assigned to water molecules with different hydrogen bonding (HB) environments, these spectral features are interpreted by a mechanism that H2O in different solution systems has equal types of water molecules with similar HB degrees-fully hydrogen-bonded H2O (FHW) and partially hydrogen-bonded H2O (PHW). The ratio of the intensity transition from FHW to PHW is determined based on Gaussian fitting. Therefore, the variation of hydrogen bond competition can be supplemented by the intensity ratio of PHW/FHW ((IC2 + IC3)/IC1). This study provides an experimental basis for enriching the hydrogen bonding theory of multivariate aqueous solution systems.

The Coil-to-Globule-to-Coil Transition of Linear Polymer Chains in Dilute Aqueous Solutions: Effect of Intrachain Hydrogen Bonding

2008 ◽  
Vol 41 (22) ◽  
pp. 8927-8931 ◽  
Author(s):  
Kejin Zhou ◽  
Yijie Lu ◽  
Junfang Li ◽  
Lei Shen ◽  
Guangzhao Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Aqueous Solutions ◽  
Polymer Chains ◽  
Linear Polymer ◽  
Coil Transition ◽  
Dilute Aqueous Solutions
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