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Síntese e caracterização estrutural de novos compostos organocalcogenoxanos contendo ítrio(III)
(Universidade Federal de Santa Maria, 2017-07-26)
This work describes the synthesis and structural characterization of new organochalcogenoxanes polymer and clusters compounds containing yttrium(III) ion. The synthetized compounds have structure of unidimensional coordination ...
Síntese e caracterização de 1,3,4-oxadiazolil-1,2,4-oxadiazóis derivados de ácidos acrílicos 3-substituídos
(Universidade Federal de Santa Maria, 2017-02-24)
A series of 1,3,4-oxadiazolyl-1,2,4-oxadiazoles was synthesized through a one-pot condensation-cyclization reaction between 3-substituted acrylic acids and 5-aryl-1,2,4-oxadiazolyl-1,2,4-oxadiazoles, and were characterized ...
Autoassociação de amidas aromáticas: abordagem supramolecular e mecanismos de cristalização
(Universidade Federal de Santa Maria, 2017-07-21)
This work presents the use of N-phenylamides as models for the study of self-association and intermolecular interactions. Obtaining the crystal of N-phenyltrifluoroacetamide allowed its diffraction and inclusion in the ...
Síntese e estereoquímica de isoxazóis espiro-tetracíclicos trifluormetil substituídos
(Universidade Federal de Santa Maria, 2017-02-23)
The present dissertation initially describes methodologies for the synthesis of five 3-(trifluoromethyl)-3,3a-dihydrospiro[chromeno[4,3-c]isoxazole-4,1'-cycloalkan]-3-ols (7) in 65 – 84 % yields, where the spirocarbocyclic ...
Síntese de 4-(1-fenil-5-trifluormetil-1h-pirazol-4-il)-1h-1,2,3-triazóis promovida por dialquil biaril fosfinas e catálise metálica
(Universidade Federal de Santa Maria, 2017-08-11)
The present dissertation describes the development of a three-step, one-pot methodology, involving the sequential reactions of Sonogashira cross-coupling, deprotection of terminal alkyne (removal of trimethylsilane group), ...
Caracterização e avaliação da atividade fotodinâmica de tetra-meso-[(piridil)porfirina]platina(II) frente à microorganismos
(Universidade Federal de Santa Maria, 2017-06-30)
This work deals with the synthesis of Tetra-meso-[(3-pyridyl)-chloro-2,2'-bipyridyl-platinum(II)]porphyrin (3-H2TPtPyP) and Tetra-meso-[(4-pyridyl)-chloro-2,2'-bipyridyl-platinum(II)]porphyrin (4-H2TPtPyP), starting from ...
Determinação de elementos do grupo da platina em carvão com alto teor de cinzas por ICP-MS
(Universidade Federal de Santa Maria, 2017-06-03)
In this work a method for the digestion of high ash content coal (>30%) using a high
pressure asher (HPA) system for further determination of platinum group elements
(PGEs) by inductively coupled plasma mass spectrometry ...
Efeitos energéticos e topológicos no design de cocristais de compostos aromáticos e em 1,5-diaril-1h-pirazol-3-carboxilatos de etila
(Universidade Federal de Santa Maria, 2017-07-20)
This work presents the study of the supramolecular environment in multicomponent crystals. Multicomponent
crystals were defined by J. D. Dunitz as a crystal containing two or more components together, so that this
concept ...
Determinação multirresíduo de agrotóxicos em abelha e pólen apícola empregando método QuEChERS modificado e LC-MS/MS
(Universidade Federal de Santa Maria, 2017-07-21)
The use of pesticides contributes to increase the production, but there is a growing concern with its adverse effects in the environment. The decline of bee population and the contamination of apicultural products by ...
Síntese, caracterização e avaliação da atividade peroxidase de novos complexos de cobalto com ligantes derivados do piridoxal
(Universidade Federal de Santa Maria, 2017-02-16)
This work treat with the synthesis and characterization of new cobalt complexes with ligands derived from pyridoxal and their application as mimetics of the enzyme peroxidase. The complexes were structurally characterized ...