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Itens para a visualização no momento 81-90 of 119
Síntese, estrutura cristalina e molecular de complexos nos sistemas 1,3-bis(p-azofenil)triazenido e 3-(2-flúorofenil)-1-(4-nitrofenil)triazenido/Pd(II)
(Universidade Federal de Santa Maria, 2002-08-05)
The reaction between palladium chloride and 1,3-bis(pazophenyl)triazenido/pyridine yields the complex trans-bis[1,3-bis(pazophenyl)triazenido]-bis(pyridine)palladium(II), complex (a), which
crystallizes in the triclinic ...
Ferro-processos aplicados à degradação de efluente da produção de trifluralina
(Universidade Federal de Santa Maria, 2002-08-02)
In this work, comparative studies about the performance of iron-processes were
carried out in the pre-treatment of effluent streams samples (under high
concentration) from the trifluralin herbicide production (amination ...
Síntese e análise estrutural de compostos supramoleculares de Cd(II) com o ligante 4,6-dimetilpirimidina-2-tiona
(Universidade Federal de Santa Maria, 2004-03)
This dissertation describes the synthesis and analysis of the supramolecular
compounds α- and β-[Cd(DMPYMT-S)2]n, DMPYMT-S = 4,6-dimethylpyrimidine-2-
thione.
The reaction product of cadmium acetate dihydrate with ...
Estudo da interação entre silício e alumínio extraídos do vidro na presença de soluções para nutrição parenteral
(Universidade Federal de Santa Maria, 2003-08)
Silicon is a non-metal essential to the living organisms due to its role
in the tissues and bones. The most important biological forms of silicon are
the amorphous silica and the monomeric silicic acid. Only the ...
Síntese de Tio- e Selenoacrilonitrilas
(Universidade Federal de Santa Maria, 2002-08-26)
In this work three new methodologies were developed, two for the addition of
HX to chalcogenoacetylenes 3 (Methods B and C) and the third on the synthesis of
chalcogenacrylonitriles 2 (Method A). [...]
Combustão iniciada por microondas e determinação em linha de cádmio e chumbo em plantas por espectrometria de absorção atômica com tubo aquecido na chama
(Universidade Federal de Santa Maria, 2007-02-07)
In this work a new procedure is proposed by solid sampling flame furnace atomic absorption spectrometry after microwave induced combustion (MIC-FFAAS). The procedure was applied for the determination of cadmium and lead ...
Síntese e cristaloquímica de complexos de Hg(II) e Ni(II) com o ligante 1,3-BIS(4-bromofenil)triazenido
(Universidade Federal de Santa Maria, 2006-03-01)
Deprotonated 1,3-Bis(4-bromophenyl)triazene reacts with Hg(CH3COO)2 in methanol yielding [Hg(BrC6H4NNNC6H4Br)2]∞ (1) a triazenide complex polymer of Hg(II). The crystal
structure of (1) reveals one-dimensional infinite ...
Determinação de espécies de arsênio por LC-ICP-MS
(Universidade Federal de Santa Maria, 2006-07-28)
The development of a method for As speciation in aqueous by-product of pyrolysis process of foliate bituminous is described in the present work. Arsenic species are separated by liquid chromatography (LC) coupled to ...
Síntese e análise estrutural de novos dihaloorganoteluratos(II) monoaniônicos.
(Universidade Federal de Santa Maria, 2006-02-17)
In this dissertation the synthesis and structural characterization of the new series of monoanionic dihaloorganyltellurates(II) compounds with a general formula (C5H6N)[mesTeX2] is presented. Dimesitylditelluride (mesTe)2 ...
Síntese de 2-amino(alcoxi)-5-trifluoracetil-1,2,3,4-tetraidropiridinas e oxazolo[3,2-a]piridinas
(Universidade Federal de Santa Maria, 2006-07-03)
The present work describes the synthesis of novel 2-alkoxy-5-trifluoroacetyl-1,2,3,4-tetrahydropyridines, 2-amino-5-trifluoroacetyl-1,2,3,4-tetrahydropyridines and oxazolo[3,2-a]pyridines from the cyclocondensation reactions ...