On the equilibrium between molecular complexes and trigonal bipyramidal adducts of diaryl selenide dibromides in solution

2001 ◽  
Vol 12 (5) ◽  
pp. 369-379 ◽  
Author(s):  
War? Nakanishi ◽  
Satoko Hayashi
Keyword(s):  
Molecular Complexes ◽  
Trigonal Bipyramidal ◽  
Diaryl Selenide

Probing massive cold cores discovered by ISO in quiescent galactic molecular complexes

2002 ◽  
Vol 4 ◽  
pp. 133-133
Author(s):  
D. Teyssier ◽  
P. Hennebelle ◽  
M. Pérault
Keyword(s):  
Molecular Complexes

S(IV)–Mediated Unsymmetrical Heterocycle Cross-Couplings

2019 ◽  
Author(s):  
Min Zhou ◽  
Jet Tsien ◽  
Tian Qin
Keyword(s):  
Cross Coupling ◽  
Reductive Elimination ◽  
Facile Synthesis ◽  
Trigonal Bipyramidal

<p>Herein we report a sulfur (IV) mediated cross-coupling for facile synthesis of heteroaromatic substrates. Addition of heteroaryl nucleophiles onto a simple, readily-accessible alkyl sulfinyl (IV) chloride allows formation of a trigonal bipyramidal sulfurane intermediate. Reductive elimination therefrom provides bis-heteroaryl products in a practical and efficient fashion. <br></p>

Influence of β-Cyclodextrin and Hydroxypropyl-β-Cyclodextrin on Enhancement of Solubility and Dissolution of Isradipine

2017 ◽  
Vol 10 (3) ◽  
pp. 3752-3757
Author(s):  
Narendar D ◽  
Ettireddy S
Keyword(s):  
Inclusion Complex ◽  
Dissolution Rate ◽  
Solid Dispersions ◽  
Physical Stability ◽  
Molecular Complexes ◽  
In Vitro Dissolution ◽  
Molar Ratio ◽  
Phase Solubility ◽  
Cyclodextrin Complexation

The content of this investigation was to study the influence of β-cyclodextrin and hydroxy propyl-β-cyclodextrin complexation on enhancement of solubility and dissolution rate of isradipine. Based on preliminary phase solubility studies, solid complexes prepared by freeze drying method in 1:1 molar ratio were selected and characterized by DSC for confirmation of complex formation. Prepared solid dispersions were evaluated for drug content, solubility and in vitro dissolution. The physical stability of optimized formulation was studied at refrigerated and room temperature for 2 months. Solid state characterization of optimized complex performed by DSC and XRD studies.  Dissolution rate of isradipine was increased compared with pure drug and more with HP-β-CD inclusion complex than β-CD. DSC and XRD analyzes that drug was in amorphous form, when the drug was incorporated as isradipine β-CD and HP-β-CD inclusion complex. Stability studies resulted in low or no variations in the percentage of complexation efficiency suggesting good stability of molecular complexes. The results conclusively demonstrated that the enhancement of solubility and dissolution rate of isradipine by drug-cyclodextrin complexation was achieved.   

Molecular Complexes of Monoammonium Glycyrrhizinate with Alphahederin and Hederasaponin C

2015 ◽  
Vol 12 (2) ◽  
pp. 109-114 ◽  
Author(s):  
Leonid A. Yakovishin ◽  
Vladimir I. Grishkovets ◽  
Elena N. Korzh
Keyword(s):  
Molecular Complexes ◽  
Hederasaponin C

scholarly journals Optical soliton molecular complexes in a passively mode-locked fibre laser

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Z. Q. Wang ◽  
K. Nithyanandan ◽  
A. Coillet ◽  
P. Tchofo-Dinda ◽  
Ph. Grelu
Keyword(s):  
Molecular Complexes ◽  
Optical Soliton ◽  
Fibre Laser

The effect of terminal N-donor aromatic ligands on sensitization and emission of lanthanide ions in Zn2Ln (Ln = Eu, Tb) complexes with 4-biphenylcarboxylate anions

2021 ◽  
Author(s):  
Stanislav N. Melnikov ◽  
Igor Evstifeev ◽  
Stanislav A. Nikolaevskii ◽  
Ivan V. Ananyev ◽  
Evgenia Varaksina ◽  
...  
Keyword(s):  
General Formula ◽  
Molecular Complexes ◽  
Lanthanide Ions ◽  
Biphenylcarboxylic Acid

The systematical series of Zn-Ln trinuclear carboxylate molecular complexes with general formula [Zn2Ln(NO3)(phbz)6(L)2] (Ln = Eu, Gd, Tb; phbz is anion of 4-biphenylcarboxylic acid; L is pyridine, 2,3-lutidine or 2,2’-bipyridine)...

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