A5028894284- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetism in coordination complexes
- Marine Sponges and Natural Products
- Metal complexes synthesis and properties
- Crystallography and molecular interactions
- Metal-Catalyzed Oxygenation Mechanisms
- Natural product bioactivities and synthesis
- Ferrocene Chemistry and Applications
- Seaweed-derived Bioactive Compounds
- Phytochemistry and Bioactivity Studies
- Flannery O'Connor and Thomas Merton
- Traditional and Medicinal Uses of Annonaceae
- Enzyme Structure and Function
- Organometallic Compounds Synthesis and Characterization
- Catalysis and Oxidation Reactions
- Enzyme Production and Characterization
- Protein Structure and Dynamics
- Porphyrin and Phthalocyanine Chemistry
- Sesquiterpenes and Asteraceae Studies
- Echinoderm biology and ecology
- Luminescence Properties of Advanced Materials
- Research on Leishmaniasis Studies
- Lanthanide and Transition Metal Complexes
- Organometallic Complex Synthesis and Catalysis
Universitas Nusa Bangsa
2024
Universidade Federal de Minas Gerais
2013-2021
Universidade Regional de Blumenau
2016
Universidade Federal Fluminense
2015
Valence tautomeric interconversion (VTI) is a reversible process occurring in metal complexes which an intramolecular metal-ligand electron transfer accompanied by change of ion spin state, creating two switchable electronic states (redox isomers). Herein, we describe the low-temperature, 30-100 K, single-crystal study [Co(diox)2(4-CN-py)2]·benzene complex (1) (diox = 3,5-di-t-butylsemiquinonate (SQ•-) and/or 3,5-di-t-butylcatecholate (Cat2-) radical; 4-CN-py 4-cyano-pyridine) using hard...
Abstract Chemical investigation on the nonpolar extract of Brazilian brown alga Canistrocarpus cervicornis (Dictyotaceae) has led to isolation a new diterpene 1 and four known seco ‐dolastane diterpenes 2 – 5 . Their chemical structures were elucidated by 1D‐ 2D‐NMR spectroscopy, data was compared with literature. A full X‐ray diffraction analysis confirmed absolute configuration
Abstract Chemical investigation of the CH 2 Cl crude extract from brown alga Canistrocarpus cervicornis (Dictyotaceae) led to isolation one new ( 1 ) and four previously reported dolastane diterpenes – 5 ). Their structures were characterized by 1D‐ 2D‐NMR spectroscopic techniques, including a full single crystal X‐ray diffraction analysis for 1, , 4 . In addition, structure was assayed as chemical defense inhibiting feeding sea urchin Lytechinus variegatus. This study constitutes an...
The mononuclear cobalt complex of 3,5-di-tert-butylcathecolate and cyan-pyridine (Co(diox)2(4-CN-py)2) is a very versatile compound that displays valence tautomerism (VT) in the solid state, which induced by temperature, light, hard X-rays, modulated solvent crystal lattice. In our work, we used single X-ray diffraction as probe for light-induced VT state demonstrate controlled use X-rays via attenuation to avoid X-ray-induced interconversion. We report photoinduced benzene solvated crystals...
O presente artigo analisa a presença de aspectos literários do texto bíblico no conto A Circle in The Fire da escritora estadunidense Flannery O´Connor. narra o confronto entre uma rica proprietária terras com um grupo três adolescentes que passam importunar mulher comportamento insubmisso dentro das propriedades dela. Nesta análise, as considerações Robert Alter (2007) e Northrop Frye (2004 2006) servirão base teórica para serão feitas respeito enquanto obra literária. Após apresentarmos...
Abstract isolation and structure elucidation of (I)