Search Results - "Santos, Regina Helena de Almeida"

Use of HPLC in the identification of cis and trans-diaquabis(2,2 ′-bipyridine)ruthenium(II) complexes: crystal structure of cis-[Ru(H 2O) 2(bpy) 2](PF 6) 2 by Gama Sauaia, Marı́lia, Tfouni, Elia, Helena de Almeida Santos, Regina, Teresa do Prado Gambardella, Maria, Del Lama, Maria Perpétua F.M., Fernando Guimarães, Luiz, Santana da Silva, Roberto

“…[Ru(H 2O) 2(bpy) 2](PF 6) 2 complex was obtained by reacting HPF 6 in a [Ru(CO 3)(bpy) 2] aqueous solution. The complex can exist as cis and trans isomers and…”
Get full text

A quantum chemical and statistical study of flavonoid compounds (flavones) with anti-HIV activity by Souza, Jaime, de Almeida Santos, Regina Helena, Ferreira, Márcia Miguel Castro, Molfetta, Fábio Alberto, Camargo, Ademir João, Maria Honório, Káthia, da Silva, Albérico Borges Ferreira

“…The molecular orbital semi-empirical method AM1 was employed to calculate a set of molecular properties (variables) of 22 flavonoid compounds (flavones) with…”
Get full text

Diimine copper(II) complexes as building blocks for microporous catalytic materials by Andrade Alves, Wendel, Afonso de Almeida Filho, Saulo, Helena de Almeida Santos, Regina, Maria Da Costa Ferreira, Ana

Get full text

Sulfate as a ligand in ruthenium(II) and (III) ammines by dos Santos Silva, Hildo Antonio, McGarvey, Bruce R, de Almeida Santos, Regina Helena, Bertotti, Mauro, Mori, Vânia, Franco, Douglas Wagner

“…The trans-[RuSO 4 (NH 3 ) 4 (L)]Cl complexes, (L = nicotinamide (nia), L-histidine (L-hist), 4-picoline (4-pic), 4-chloropyridine (4-Clpy), isonicotinamide…”
Get full text

1,3-DIPOLAR CYCLOADDITION OF CS2 TO THE COORDINATED AZIDE IN THE CYCLOPALLADATED [Pd(bzan)(μ-N3)]2. CRYSTAL AND MOLECULAR STRUCTURE OF DI(μ-N,S-1,2,3,4-THIATRIAZOLE-5-THIOLATE)BIS[(BENZYLIDENEANILINE-C2,N)PALLADIUM(II)] by Santana, Anderson Martinez, Mauro, Antonio Eduardo, De Almeida, Eduardo Tonon, Netto, Adelino Vieira de Godoy, Klein, Stanlei Ivair, Santos, Regina Helena de Almeida, Zóia, Jussara Ramos

“…The compound [Pd(bzan)(μ-N 3 )] 2 1, bzan = benzylideneaniline, was prepared from [Pd(bzan) (μ-OOCCH 3 )] 2 by an anion exchange reaction. The 1,3-dipolar…”
Get full text

A nickel(II) coordination polymer derived from a tridentate Schiff base ligand with N,O-donor groups: synthesis, crystal structure, spectroscopy, electrochemical behavior and electrocatalytic activity for H2O2 electroreduction in alkaline medium by dos Santos, Rachel Dias, de Fatima Freire dos Santos, Sinara, da Silva Moura, Fagner, Maia, Paulo José Sousa, da Fonseca, Bruna Teixeira, de Almeida Santos, Regina Helena, Medeiros, Marta Eloisa, dos Santos Garrido, Francisco Manoel, Casellato, Annelise

“…A Ni(II) coordination polymer [C 42 H 42 K 2 N 4 Ni 4 O 27 ] has been synthesized under open-air mild reaction conditions and characterized by physicochemical…”
Get full text

2-[(2-Carboxy-phen-yl)disulfan-yl]benzoic acid-4,4'-bipyridyl N,N'-dioxide (1/2) by Moreno-Fuquen, Rodolfo, Ellena, Javier, De Simone, Carlos A, Ribeiro, Leandro, De Almeida Santos, Regina Helena

“…In the title 2:1 adduct, C(14)H(10)O(4)S(2)·0.5C(10)H(8)N(2)O(2), which arose from an unexpected oxidation of a precursor, the dihedral angle between the…”
Get full text

Study of the O–Ru–N bonding in trans-[Ru(NH3)4(SO4)L]+ complexes (L=imidazole, histidine and substituted pyridines): a X-ray, EPR, spectroscopic and theoretical MO study by Silva, Hildo A.Santos, Carlos, Rose Maria, Camargo, Ademir J, Picchi, Cristina M.C, Santos, Regina Helena de Almeida, McGarvey, Bruce R, Franco, Douglas Wagner

“…The spectroscopic (UV–Vis, EPR) properties, X-ray and quantum mechanical calculation studies on trans-[Ru(NH3)4(SO4)L]+, where L=imidazole, histidine, pyridine…”
Get full text

Spectroscopic and electrochemical properties of a new nitrosyl-complex of Ru(II): trans-[Ru(NO){(CH 3CH 2) 2PCH 2CH 2P(CH 2CH 3) 2} 2Cl](PF 6) 2 by Bagatin, Izilda A., de Almeida Santos, Regina Helena, Franco, Douglas W., Magalhães, Alviclér, Ferreira, Antonio G.

“…A new ruthenium nitric oxide complex with the bidentate phosphine, 1,2-bis(diethylphosphino)ethane (depe), has been synthesized and characterized by UV–Vis,…”
Get full text

2-[(2-Carboxyphenyl)disulfanyl]benzoic acid #8211;4,4 #8242;-bipyridyl N,N #8242;-dioxide (1/2) by Rodolfo Moreno-Fuquen, Javier Ellena, Carlos A. De Simone, Leandro Ribeiro, Regina Helena De Almeida Santos

“…In the title 2:1 adduct, C14H10O4S2·0.5C10H8N2O2, which arose from an unexpected oxidation of a precursor, the dihedral angle between the aromatic rings…”
Get full text

1,3-DIPOLAR CYCLOADDITION OF CS 2 TO THE COORDINATED AZIDE IN THE CYCLOPALLADATED [Pd(bzan)(μ-N 3 )] 2 . CRYSTAL AND MOLECULAR STRUCTURE OF DI(μ-N,S-1,2,3,4-THIATRIAZOLE-5-THIOLATE)BIS[(BENZYLIDENEANILINE-C 2 ,N)PALLADIUM(II)] by Santana, Anderson Martinez, Mauro, Antonio Eduardo, De Almeida, Eduardo Tonon, Netto, Adelino Vieira de Godoy, Klein, Stanlei Ivair, Santos, Regina Helena de Almeida, Zóia, Jussara Ramos

Get full text

1:1 Complex of 4-nitro­benzoic acid and 4-nitro­pyridine N-oxide by Moreno-Fuquen, Rodolfo, Ribeiro de Castro, Eustaquio Vinicius, Moreno, Margarita, De Almeida Santos, Regina Helena, Montaño, Angela Marcela

“…In the title co‐crystal, C7H5NO4·C5H4N2O3, the two components are linked by an intermolecular hydrogen bond between the O—H and N—O groups [O⋯O 2.577 (3) Å]…”
Get full text

1:1 Complex of 4-nitrobenzoic acid and 4-nitropyridine N-oxide by MORENO-FUQUEN, R, VINICIUS RIBEIRO DE CASTRO, E, MORENO, M, DE ALMEIDA SANTOS, R. H, MONTANO, A. M

Get full text

Pyridine N-Oxide and 4-Nitrophenol (1:1 Complex) by Moreno-Fuquen, R., De Almeida Santos, R. H., Francisco, R. H. P.

Get full text

1:1 Complex of 2-Aminobenzoic Acid and 3-Methyl-4-nitropyridine N-Oxide by Moreno-Fuquen, R., De Almeida Santos, R. H., De Castro, E. V. R.

Get full text

The 1:1 Complex Formed by 3-Picoline N-Oxide and p-Toluic Acid by Moreno-Fuquen, R., Santos, R. H. De A., Gambardella, M. T. do P.

Get full text