Structure Determination of Phosphoric Acid and Phosphate Ions in Aqueous Solution Using EXAFS Spectroscopy and Large Angle X-ray Scattering

The Journal of Physical Chemistry. a
Ingmar PerssonWantana Klysubun

Abstract

The structures of hydrated phosphoric acid and phosphate ions (H2PO4-, HPO42-, and PO43-) in aqueous solution have been determined by P K-edge EXAFS and large angle X-ray scattering (LAXS). The P-O bond distance in all phosphate species studied is close to 1.53 Å. The P-(O)···Oaq distances have been refined to ca. 3.6 Å from the LAXS data giving a P-O···Oaq bond angle close to tetrahedral, suggesting that each oxygen or OH group of phosphoric acid and dihydrogen phosphate, on average, hydrogen bind three water molecules. The (P-)O(-H)···Oaq and (P-)O···(H-)Oaq hydrogen bonds in hydrated phosphoric acid and the H2PO4- ion are shorter than the hydrogen bonds in neat water. This supports previous infrared spectroscopic studies claiming that the hydrogen bonds in hydrated phosphoric acid and phosphate ions are stronger than the hydrogen bonds in neat water. Phosphoric acid and phosphate ions can therefore be regarded as structure making solutes. This is the first study applying transmission mode X-ray absorption spectroscopy (XAS) data collection on the P K-edge. It shows that XAS spectra collected in transmission mode have a much better S/N ratio than data collected in fluorescence mode, allowing accurate determination of P-O bond...Continue Reading

References

Jul 15, 1995·Physical Review. B, Condensed Matter·S I ZabinskyM J Eller
Jul 2, 1997·Inorganic Chemistry·Christina M. V. StålhandskeEwa Kamienska-Piotrowicz
May 31, 2002·Acta Crystallographica. Section B, Structural Science·Frank H Allen
May 6, 2005·Environmental Science & Technology·Nidhi KhareJames D Martin
May 14, 2008·Journal of Computational Chemistry·Andreas B PribilBernd M Rode
May 6, 2009·The Journal of Physical Chemistry. B·Maciej SmiechowskiJanusz Stangret
Aug 21, 2010·Journal of Synchrotron Radiation·Gunnar AlmkvistIngmar Persson
Feb 22, 2011·Journal of Synchrotron Radiation·Ellery D IngallPaul Northrup
Dec 16, 2011·Inorganic Chemistry·Johan Mähler, Ingmar Persson
Mar 15, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Lars EklundIngmar Persson
Oct 13, 2012·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Reshmi KurianFrank M F de Groot
Oct 25, 2012·Journal of Synchrotron Radiation·Wantana KlysubunChanapa Kongmark
Nov 9, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Johan MählerRoger B Herbert
Jan 28, 2014·The Journal of Physical Chemistry Letters·Rolf MitznerJunko Yano
Feb 5, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Lars Eklund, Ingmar Persson
Dec 5, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Lars EklundIngmar Persson
Apr 1, 2015·The Journal of Physical Chemistry. B·Andreas EiberweiserRichard Buchner

❮ Previous
Next ❯

Citations

May 31, 2019·Physical Chemistry Chemical Physics : PCCP·Yina Salamanca BlancoIngmar Persson
Jun 3, 2020·The Journal of Physical Chemistry. B·Sangkha Borah
May 29, 2020·Inorganic Chemistry·Maciej Śmiechowski, Ingmar Persson

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Dalton Transactions : an International Journal of Inorganic Chemistry
Lars Eklund, Ingmar Persson
Dalton Transactions : an International Journal of Inorganic Chemistry
Johan MählerRoger B Herbert
© 2022 Meta ULC. All rights reserved