cobalt salt
Recently Published Documents


TOTAL DOCUMENTS

80
(FIVE YEARS 3)

H-INDEX

17
(FIVE YEARS 0)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Guoshuai Zhang ◽  
Haitao Han ◽  
Kaiyue Li ◽  
Hong Zhang ◽  
Wuping Liao

Abstract Three cobalt-calixarene coordination frameworks, namely, {[Co4Cl(H4TC4AS)]4(HPO3)8}4− (CIAC-253), {[Co4Cl(H4TC4AS)]4(PO4)8}12− (CIAC-254) and {[Co4Cl(H4TC4AS)]3(Ph-PO3)6}3− (CIAC-255) were obtained by solvothermal reaction of a cobalt salt, sodium p-sulfonatothiacalix[4]arene (Na4H4TC4AS) and phosphate, phosphite and phosphonate ligands. In CIAC-253 and CIAC-254, the shuttlecock-like Co4Cl-(TC4AS) secondary building units (SBUs) are bridged by HPO3 2− or PO4 3− anions into two quadrilateral frameworks while in CIAC-255, the Co4Cl-(TC4AS) SBUs are linked into a triangular framework by phenylphosphonate anions. The supramolecular interactions between the phenyl groups of phosphonate and TC4AS play a crucial role in the formation of the triangle. Magnetic measurements revealed that all the cobalt(II) centers exhibit antiferromagnetic interactions.


Author(s):  
I. V. Pronina ◽  
E. S. Mochalova ◽  
Yu. A. Efimova ◽  
P. V. Postnikov

Objectives. Over the last decade, hematopoietic stimulants have grown increasingly popular in elite sports. This is supported by the growing number of high-profile doping scandals linked to their use. A group of these stimulants includes cobalt salts, which cause an increase in the oxygen capacity of the blood as well as a powerful stimulation of metabolic processes, resulting innoticeable competitive advantages. The use of cobalt salts is regulated according to the Prohibited List of the World Anti-Doping Agency (WADA). Currently, only a few works have been dedicated to solving the problem of detecting the abuse of cobalt salts in anti-doping control. Only a few laboratories have included cobalt salt determination in their methodological bases. The purpose of this review is to attract the attention of the scientific community to the toxicity of cobalt compounds, consequences of their intake, and pharmacokinetics, as well as the problems in their detection methods due to their widespread availability in the modern market and the growing number of abuse cases.Results. The main biological functions of cobalt, cellular levels of exposure, toxicity, and symptoms of cobalt salt poisoning are presented in detail in this review article. The data from the literature on the main methods for detecting cobalt as a doping agent have been generalized and systematized. There is a major focus on the amount of cobalt in dietary supplements that could cause an athlete to test positive for cobalt when they are consumed.Conclusions. After analyzing promising cobalt detection approaches and methods, it was determined that high-performance liquid chromatography in combination with inductively coupled plasma mass spectrometry has an undeniable advantage for detecting cobalt as a doping agent. The lack of explicit WADA requirements for detection methods and the lack of its obligation to determine cobalt make it tempting for unscrupulous athletes to use its salts. Therefore, antidoping laboratories must implement the abovementioned method as soon as possible.


2021 ◽  
Author(s):  
Shuo Song ◽  
Chuhan Li ◽  
Tianfen Liu ◽  
Panke Zhang ◽  
Xiaoming Wang
Keyword(s):  

2020 ◽  
Vol 98 (7) ◽  
pp. 347-351
Author(s):  
Midhun Mohan ◽  
Love Karan Rana ◽  
Thierry Maris ◽  
Adam Duong

Co-crystals of Co(II) salt and 1H,1′H-[3,3′]bipyridinyl-6,6′-dione 1 with the composition 1·Co(CHOO)2(H2O)4 were obtained by mixing both reactants. The single-crystal structure reveals that the metal salt and organic ratio is 1:1. The supramolecular organization of the two components in the co-crystal was mainly dictated by hydrogen bonds between 1 and Co(II) complex. Infrared and powder X-ray diffraction were used to confirm the homogeneity and the phase purity of the bulk crystalline sample of 1·Co(CHOO)2(H2O)4. TGA/DTA was recorded to evaluate the thermal stability of the co-crystals.


Molecules ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 290 ◽  
Author(s):  
Ian Hicks ◽  
Jonathan McTague ◽  
Tatiana Hapatsha ◽  
Rania Teriak ◽  
Parminder Kaur

In our current work, we have reported the first cobalt-catalyzed cross-coupling of arylboronic acid with alkyl/aryl phosphites under mild conditions. The reaction was carried out in the presence of zinc powder as an additive and ter-pyridine as a ligand. The use of non-precious cobalt salt makes the protocol advantageous, as it is inexpensive and more abundant than the previously used methods where precious metal salts (Pd and Pt) were used. The reaction has a wide substrate scope and the products were obtained in good yields.


2019 ◽  
Vol 579 ◽  
pp. 99-105 ◽  
Author(s):  
Ruixiao Gao ◽  
Haotian Guo ◽  
Bowei Wang ◽  
Pengzhi Qiu ◽  
Mingming Sun ◽  
...  

2019 ◽  
Vol 60 (13) ◽  
pp. 895-899 ◽  
Author(s):  
Jian-Ye Li ◽  
Jun Huang ◽  
Shi-Jin Zhang ◽  
Chunna Yao ◽  
Wen-Wu Sun ◽  
...  

2019 ◽  
Vol 361 (8) ◽  
pp. 1777-1780 ◽  
Author(s):  
Céline Dorval ◽  
Elodie Dubois ◽  
Yann Bourne‐Branchu ◽  
Corinne Gosmini ◽  
Grégory Danoun
Keyword(s):  

Nanoscale ◽  
2019 ◽  
Vol 11 (48) ◽  
pp. 23226-23233 ◽  
Author(s):  
Sarita Roy Bhattacharya ◽  
Thomas Bürgi

Co2+ leads to the drastic enhancement of vibrational circular dichroism of a thiolate-protected gold cluster.


Sign in / Sign up

Export Citation Format

Share Document