Complexation of lanthanides with nitrate at variable temperatures: thermodynamics and coordination modes

Inorganic Chemistry
Linfeng Rao, Guoxin Tian

Abstract

Complexation of neodymium(III) with nitrate was studied at variable temperatures (25, 40, 55, and 70 degrees C) by spectrophotometry and microcalorimetry. The NdNO(3)(2+) complex is weak and becomes slightly stronger as the temperature is increased. The enthalpy of complexation at 25 degrees C was determined by microcalorimetry to be small and positive, 1.5 +/- 0.2 kJ x mol(-1), in good agreement with the trend of the stability constant at variable temperatures. Luminescence emission spectra and the lifetime of Eu(III) in nitrate solutions suggest that inner-sphere and bidentate complexes form between trivalent lanthanides (Nd(3+) and Eu(3+)) and nitrate in aqueous solutions. A specific ion interaction approach was used to obtain the stability constants of NdNO(3)(2+) at infinite dilution and variable temperatures.

Citations

Dec 15, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Taoxiang SunJing Chen
Oct 21, 2016·Chemistry : a European Journal·Baofu QiaoRoss J Ellis
Jul 9, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Plinio Di BernardoFrancesco Endrizzi
Dec 14, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Wolfram Rudolph, Gert Irmer
Dec 8, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Linfeng Rao, Guoxin Tian
Feb 16, 2011·Physical Chemistry Chemical Physics : PCCP·Magali Duvail, Philippe Guilbaud
Jul 8, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Guoxin Tian, David K Shuh
Oct 27, 2020·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Hiroyuki Okamura, Naoki Hirayama
Sep 25, 2019·Journal of Colloid and Interface Science·Constantina SofroniouEpameinondas Leontidis
Mar 30, 2011·The Journal of Physical Chemistry. B·John Jairo MolinaPhilippe Guilbaud
Feb 27, 2018·The Journal of Physical Chemistry. B·Valentina MiglioratiPaola D'Angelo

❮ 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.