Synthesis and structural characterisation of the novel iron helicate [Fe2(µ-L)4(µ-Cl)2][FeCl4]2 and metalla-macrocycle [Fe2(µ-L)2(THF)4Cl2][FeCl4]2 {L = N,N′-di(n-butylcarbamoyl)pyridine-2,6-dicarboxamide}

2002 ◽  
pp. 837-839 ◽  
Author(s):  
Hayley A. Burkill ◽  
Ramón Vilar ◽  
Andrew J. P. White ◽  
David J. Williams
Keyword(s):  
The Novel ◽  
Structural Characterisation

Displacement of benzene by an alkyne in a tetraosmium cluster; synthesis and structural characterisation of the novel cluster [H2Os4(CO)9(μ3-η2-Ph2C2)(η2-Ph2C2)]

1991 ◽  
Vol 405 (2) ◽  
pp. C22-C24 ◽  
Author(s):  
Hong Chen ◽  
Brian F.G. Johnson ◽  
Jack Lewis ◽  
Dario Braga ◽  
Fabrizia Grepioni ◽  
...  
Keyword(s):  
The Novel ◽  
Structural Characterisation

Preparation, structural characterisation, and magnetic properties of [Cu(men)2][Cu2Cd2Cl2(CN)6] (men = N-methylethane-1,2-diamine)

2013 ◽  
Vol 67 (4) ◽  
Author(s):  
Juraj Kuchár ◽  
Juraj Černák
Keyword(s):  
Dilute Hydrochloric Acid ◽  
Aqueous Ethanol ◽  
Three Dimensional ◽  
The Novel ◽  
Temperature Dependent ◽  
Ferromagnetic Interaction ◽  
Structural Characterisation ◽  
Men 2 ◽  
Cyanide Ligands ◽  
Ethanol System

AbstractThe novel complex [Cu(men)2][Cu2Cd2Cl2(CN)6] (I) was isolated from the aqueous-ethanol system containing CuCl2, men (men = N-methylethane-1,2-diamine) and K2[Cd(CN)4] in the presence of dilute hydrochloric acid and chemically and spectroscopically characterised. The crystal structure of I consists of [Cu2I(CN)6] and [Cd2Cl2(CN)6] building units bridged by cyanide ligands and forms a three-dimensional skeleton with cavities. [Cu(men)2]2+ cations in which two men ligands are chelated (mean Cu-N is 2.033(6) Å) are located in the cavities. The coordination polyhedron around the Cu(II) atoms is formed as a tetragonal bipyramidal by two weaker axial Cu-Cl bonds (2.8642(12) Å) with chlorido ligands from the skeleton. The Cu(I) and Cd(II) atoms in the skeleton exhibit tetra-(CuC4 chromophore) and penta-coordination (CdN3Cl2), respectively. The temperature-dependent susceptibility measurements indicate a Curie-Weiss-like behaviour and the presence of weak anti-ferromagnetic interaction.

scholarly journals Structural Characterisation and Assessment of the Novel Bacillus amyloliquefaciens RK3 Exopolysaccharide on the Improvement of Cognitive Function in Alzheimer’s Disease Mice

Polymers ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2842
Author(s):  
Ravi Gangalla ◽  
Sampath Gattu ◽  
Sivasankar Palaniappan ◽  
Maqusood Ahamed ◽  
Baswaraju Macha ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Bacillus Amyloliquefaciens ◽  
Sugar Mill ◽  
The Novel ◽  
X Ray ◽  
Structural Characterisation ◽  
Sugar Mill Effluent ◽  
Potential Applicability ◽  
Scanning Electron

In this study Bacillus amyloliquefaciens RK3 was isolated from a sugar mill effluent-contaminated soil and utilised to generate a potential polysaccharide with anti-Alzheimer’s activity. Traditional and molecular methods were used to validate the strain. The polysaccharide produced by B. amyloliquefaciens RK3 was purified, and the yield was estimated to be 10.35 gL−1. Following purification, the polysaccharide was structurally and chemically analysed. The structural analysis revealed the polysaccharide consists of α-d-mannopyranose (α-d-Manp) and β-d-galactopyranose (β-d-Galp) monosaccharide units connected through glycosidic linkages (i.e, β-d-Galp(1→6)β-d-Galp (1→6)β-d-Galp(1→2)β-d-Galp(1→2)[β-d-Galp(1→6)]β-d-Galp(1→2)α-d-Manp(1→6)α-d-Manp (1→6)α-d-Manp(1→6)α-d-Manp(1→6)α-d-Manp). The scanning electron microscopy and energy-dispersive X-ray spectroscopy imaging of polysaccharides emphasise their compactness and branching in the usual tubular heteropolysaccharide structure. The purified exopolysaccharide significantly impacted the plaques formed by the amyloid proteins during Alzheimer’s disease. Further, the results also highlighted the potential applicability of exopolysaccharide in various industrial and pharmaceutical applications.

Sign in / Sign up

Export Citation Format

Share Document