A5002300580- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Dyeing and Modifying Textile Fibers
- Crystal structures of chemical compounds
- Dye analysis and toxicity
- Metal complexes synthesis and properties
- Crystallography and molecular interactions
- Nonlinear Optical Materials Research
- Organometallic Compounds Synthesis and Characterization
- Synthesis of Organic Compounds
- Coral and Marine Ecosystems Studies
- Synthesis and Characterization of Heterocyclic Compounds
- Synthesis and biological activity
- Lichen and fungal ecology
- Free Radicals and Antioxidants
- Essential Oils and Antimicrobial Activity
- Biocrusts and Microbial Ecology
- Cancer therapeutics and mechanisms
- Plant and animal studies
- Marine Sponges and Natural Products
- Phenothiazines and Benzothiazines Synthesis and Activities
Universidade Federal de Juiz de Fora
2005-2017
In this study, Raman, infrared, UV/vis, NMR, and single crystal X-ray diffraction spectroscopies are used to elucidate the tautomeric equilibrium of azo dyes derived from 1-phenyl-azo-2-naphthol (Sudan I). A new crystallographic structure is described for Sudan I, revealing presence intramolecular hydrogen bonds supramolecular interactions, such as unconventional C-H···O bond type, π-stacking, charge-dipole interactions. All these weak intermolecular interactions play a role in stability...
Chemical investigation of nonindigenous Tubastraea coccinea and T. tagusensis by Raman spectroscopy resulted in the identification carotenoids indolic alkaloids. Comparison data obtained for situ crude extracts has shown potential technique characterizing samples which are metabolic fingerprints, means band analysis. bands at ca. 1520, 1160, 1005 cm–1 assigned to ν1(C═C), ν2(C—C), ρ3(C—CH3) modes were attributed astaxanthin, 1665 could be ν(C—N), ν(C—O), ν(C—C) coupled mode...
In this study, experimental techniques including Raman, infrared and X-ray crystal diffraction, as well quantum chemistry calculations, are used to investigate two new azo dyes supramolecular complexes: 1-phenylazo-2-naphthol (Sudan I) with nickel(II) ion 1-(2,4-xylylazo)-2-naphthol II) copper(II) ion. The crystallographic structures have been solved for bis-1-(pheny-l-azo)-2-naphtholatenickel(II) bis-1-(2,4-xylylazo)-2-naphtholatecopper(II) complexes, revealing the presence of interactions,...
STRUCTURE AND PROPERTIES OF ELLIPTICINES.The ellipticines constitute a broad class of molecules with antitumor activity.In the present work we analyzed structure and properties series ellipticine derivatives in gas phase solution using quantum mechanical Monte Carlo methods.The results showed good correlation between solvation energies water obtained continuum model simulation.Molecular descriptors were considered development QSAR models DNA association constant (log K app ) as biological...