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61 results on '"Oliveira, Adriano Bof de"'

18. Crystal structure of bis{l-4-methyl-N0-[3- (oxidoimino)butan-2-ylidene]benzenesulfonohydrazidato} bis[(dimethyl sulfoxide-jO)copper(II)]

Author

Siqueira, Diego Pereira, Siqueira, Maria Carolina Bulhosa, Gervini, Vanessa Carratu, Bresolin, Leandro, and Oliveira, Adriano Bof de

Subjects
Hydroxyimino-tosylhydrazone derivative, CuI''dimer, Crystal structure, – stacking
Abstract

In the title compound, [Cu2(C11H13N3O3S)2(C2H6OS)2], the CuII cation is N,N',O-chelated by a deprotonated hy­droxy­imino-tosyl­hydrazone ligand and coordinated by a dimethyl sulfoxide mol­ecule. One O atom from the adjacent hy­droxy­imino-tosyl­hydrazone ligand bridges the CuII cation, forming the centrosymmetric dimeric complex. The cation is in an overall distorted N2O3 square-pyramidal coordination environment. The methyl­benzene ring is twisted with respect to the hydrazine fragment, with a dihedral angle of 89.54 (9)° between the planes. An intra­molecular C-H...O hydrogen bond occurs. In the crystal, mol­ecules are linked by weak C-H...O and C-H...S inter­actions. Weak [pi]-[pi] stacking is also observed between parallel benzene rings of adjacent mol­ecules, the centroid-centroid distance being 3.9592 (17) Å.

Published
2014

19. The charge-transfer complex 1-amino-anthraquinone-7,7',8,8'-tetra-cyano-quinodimethane (1/1)

Author

Oliveira, Adriano Bof de, Beck, Johannes, Daniels, Jörg, Santos, Jaciara Nascimento, and Feitosa, Bárbara Regina Santos

Subjects
1-Aminoanthraquinone, Complexo de transferência de carga, C14H9NO2·C12H4N4
Abstract

The reaction of 1-aminoanthraquinone with 7,7',8,8'-tetracyanoquinodimethane yielded the title charge-transfer complex, C14H9NO2·C12H4N4. The molecules have maximum deviations from the mean planes through the non-H atoms of 0.0769 (14) Å for an oxo O atom and 0.1175 (17) Å for a cyano N atom, respectively. The dihedral angle between the two planes is 3.55 (3)°. In the crystal, molecules are stacked into columns along the a-axis direction. Pairs of N-HN and N-HO interactions connect the molecules perpendicular to the stacking direction. Additionally, an intramolecular N-HO hydrogen-bond interaction is observed for 1-aminoanthraquinone.

Published
2013

20. [1-(5-Bromo-2-oxidobenzylidene)thiosemicarbazidato-3O,N1,S](pyridine-N)nickel(II)

Author

Pederzolli, Fernanda Rosi Soares, Bresolin, Leandro, Beck, Johannes, Daniels, Jörg, and Oliveira, Adriano Bof de

Subjects
5-bromo-salicilaldeído, Piridina, Acetato de níquel
Abstract

The reaction of 5-bromosalicylaldehyde thiosemicarbazone with nickel acetate tetrahydrate and pyridine yielded the title compound, [Ni(C8H6BrN3OS)(C5H5N)]. The NiII atom is four-coordinated in a square-planar environment by one deprotonated dianionic thiosemicarbazone ligand, acting in a tridentate chelating mode through N, O and S atoms forming two metalla-rings, and by one pyridine molecule. The complex molecules are linked into dimers by pairs of centrosymmetrical N-HN interactions. In addition, molecules are connected through intermolecular BrBr interactions [3.545 (1) Å], forming chains along the b-axis direction.

Published
2012

21. Bis{4-phenyl-1-[1-(pyridin-2-yl-N)ethylidene]thiosemicarbazidato-2N1,S}cadmium

Author

Fonseca, Alexandra de Souza, Gervini, Vanessa Carratu, Bresolin, Leandro, Locatelli, Aline, and Oliveira, Adriano Bof de

Subjects
Cd(C14H13N4S)2, Acetato de cádmio, 2-acetylpyridine
Abstract

The reaction of cadmium acetate dihydrate with 2-acetylpyridine (4-phenylthiosemicarbazone) yielded the title compound, [Cd(C14H13N4S)2]. The CdII atom is six-coordinated in a distorted octahedral environment by two deprotonated thiosemicarbazone ligands acting in a tridentate chelating mode through two N and one S atoms, forming metalla-rings. In the crystal, molecules are connected through inversion centers via pairs of N-HS interactions, building a one-dimensional hydrogen-bonded polymer along [0-1-1].

Published
2012

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