New hybrid polyoxovanadate–Cu complex with V⋯H interactions and dual aqueous-phase sensing properties for picric acid and Pd2+: X-ray analysis, magnetic and theoretical studies, and mechanistic insights into the hybrid's sensing capabilities

2017 ◽  
Vol 5 (36) ◽  
pp. 9315-9330 ◽  
Author(s):  
Mukul Raizada ◽  
Farasha Sama ◽  
Mo Ashafaq ◽  
M. Shahid ◽  
Musheer Ahmad ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Aqueous Phase ◽  
Hybrid Material ◽  
Picric Acid ◽  
Theoretical Studies ◽  
X Ray ◽  
Sensing Properties ◽  
Cu Complex

A new hybrid material for sensing picric acid and palladium cation in aqueous medium is synthesized and characterized.

scholarly journals A new antiferromagnetic Dy6 oxido-material as a multifunctional aqueous phase sensor for picric acid as well as Fe3+ ions

2020 ◽  
Vol 1 (9) ◽  
pp. 3518-3531
Author(s):  
Mukul Raizada ◽  
M. Shahid ◽  
Sameer Hussain ◽  
Mo Ashafaq ◽  
Zafar A. Siddiqi
Keyword(s):  
Aqueous Medium ◽  
Aqueous Phase ◽  
Picric Acid ◽  
Phase Sensor

A new Dy6-oxo based multisensory material for picric acid and ferric cations in aqueous medium is developed and characterized.

A single probe to sense Al(iii) colorimetrically and Cd(ii) by turn-on fluorescence in physiological conditions and live cells, corroborated by X-ray crystallographic and theoretical studies

2015 ◽  
Vol 44 (9) ◽  
pp. 4123-4132 ◽  
Author(s):  
Chirantan Kar ◽  
Soham Samanta ◽  
Sudeep Goswami ◽  
Aiyagari Ramesh ◽  
Gopal Das
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Selective Recognition ◽  
Live Cells ◽  
Paper Strip ◽  
Theoretical Studies ◽  
X Ray ◽  
Physiological Conditions ◽  
Turn On ◽  
Single Probe

Selective recognition of Al3+and Cd2+by UV-Vis and fluorescence based techniques using a cinnamaldehyde functionalized conjugated ligand, and its applications in paper strip and live cell imaging.

scholarly journals Acemetacin cocrystals and salts: structure solution from powder X-ray data and form selection of the piperazine salt

IUCrJ ◽  
2014 ◽  
Vol 1 (2) ◽  
pp. 136-150 ◽  
Author(s):  
Palash Sanphui ◽  
Geetha Bolla ◽  
Ashwini Nangia ◽  
Vladimir Chernyshev
Keyword(s):  
Hydrogen Bonds ◽  
Dissolution Rate ◽  
Aqueous Medium ◽  
Acid Amide ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Reference Drug ◽  
X Ray ◽  
Time Period ◽  
Solid Form

Acemetacin (ACM) is a non-steroidal anti-inflammatory drug (NSAID), which causes reduced gastric damage compared with indomethacin. However, acemetacin has a tendency to form a less soluble hydrate in the aqueous medium. We noted difficulties in the preparation of cocrystals and salts of acemetacin by mechanochemical methods, because this drug tends to form a hydrate during any kind of solution-based processing. With the objective to discover a solid form of acemetacin that is stable in the aqueous medium, binary adducts were prepared by the melt method to avoid hydration. The coformers/salt formers reported are pyridine carboxamides [nicotinamide (NAM), isonicotinamide (INA), and picolinamide (PAM)], caprolactam (CPR),p-aminobenzoic acid (PABA), and piperazine (PPZ). The structures of an ACM–INA cocrystal and a binary adduct ACM–PABA were solved using single-crystal X-ray diffraction. Other ACM cocrystals, ACM–PAM and ACM–CPR, and the piperazine salt ACM–PPZ were solved from high-resolution powder X-ray diffraction data. The ACM–INA cocrystal is sustained by the acid...pyridine heterosynthon and N—H...O catemer hydrogen bonds involving the amide group. The acid...amide heterosynthon is present in the ACM–PAM cocrystal, while ACM–CPR contains carboxamide dimers of caprolactam along with acid–carbonyl (ACM) hydrogen bonds. The cocrystals ACM–INA, ACM–PAM and ACM–CPR are three-dimensional isostructural. The carboxyl...carboxyl synthon in ACM–PABA posed difficulty in assigning the position of the H atom, which may indicate proton disorder. In terms of stability, the salts were found to be relatively stable in pH 7 buffer medium over 24 h, but the cocrystals dissociated to give ACM hydrate during the same time period. The ACM–PPZ salt and ACM–nicotinamide cocrystal dissolve five times faster than the stable hydrate form, whereas the ACM–PABA adduct has 2.5 times faster dissolution rate. The pharmaceutically acceptable piperazine salt of acemetacin exhibits superior stability, faster dissolution rate and is able to overcome the hydration tendency of the reference drug.

X-ray Crystallographic and First-Principles Theoretical Studies of K2[TcOCl5] and UV/Vis Investigation of the [TcOCl5]2-and [TcOCl4]-Ions

2013 ◽  
Vol 2013 (7) ◽  
pp. 1097-1104 ◽  
Author(s):  
Erik V. Johnstone ◽  
Philippe F. Weck ◽  
Frederic Poineau ◽  
Eunja Kim ◽  
Paul M. Forster ◽  
...  
Keyword(s):  
First Principles ◽  
Theoretical Studies ◽  
X Ray

ChemInform Abstract: The nido-Pb4- 9 and the Jahn-Teller Distorted closo-Pb3- 9 Zintl Anions: Syntheses, X-Ray Structures, and Theoretical Studies.

ChemInform ◽  
2010 ◽  
Vol 27 (6) ◽  
pp. no-no
Author(s):  
J. CAMPBELL ◽  
D. A. DIXON ◽  
H. P. A. MERCIER ◽  
G. J. SCHROBILGEN
Keyword(s):  
Theoretical Studies ◽  
X Ray ◽  
Jahn Teller

Synthesis, X-ray structure, electrochemistry, and theoretical studies of palladium(II) complex with a tetradentate bis(quinoline-2-carboxamide) ligand

2012 ◽  
Vol 9 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Soraia Meghdadi ◽  
Vratislav Langer ◽  
Hossein Farrokhpour ◽  
Alshimaá A. Massoud ◽  
Mehdi Amirnasr
Keyword(s):  
Theoretical Studies ◽  
X Ray
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