Synthesis, structural studies and vibrational spectroscopy of Fe2+ and Zn2+ complexes containing 4,4′-bipyridine and barbiturate anion

Garcia, Humberto C.; Diniz, Renata; Yoshida, María Irene; Oliveira, Luiz Fernando Cappa de

doi:10.1016/j.molstruc.2010.01.035

Cited by 21 publications

(10 citation statements)

References 33 publications

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“…The main bond lengths C–O, C–N, and С–С and valence angles are enumerated in Table S2. They coincide with those given in the literature for the CfH 2 + and uncoordinated Hba − ions . The main geometric parameters of H 2 ba in 2 coincided with those found in the free keto form H 2 ba and cocrystals .…”

Section: Resultssupporting

confidence: 88%

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Two salts and the salt cocrystal of ciprofloxacin with thiobarbituric and barbituric acids: The structure and properties

Головнев

Мolokeev

Lesnikov

et al. 2017

J of Physical Organic Chem

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Ciprofloxacin (CfH, C 17 H 18 FN 3 O 3 ) crystallizes with 2-thiobarbituric (H 2 tba) and barbituric acid (H 2 ba) in the aqueous solution to yield salt CfH 2 (Htba)·3H 2 O (1), salt cocrystal CfH 2 (Hba)(H 2 ba)·3H 2 O (2), and salt CfH 2 (Hba)·H 2 O (3). The compounds are structurally characterized by the Xray single-crystal diffraction. The numerous intermolecular hydrogen bonds N-H⋯O and O-H⋯O formed by water molecules, Htba − /Hba − and CfH 2 + ions, and H 2 ba molecules stabilize the crystal structures of 1 to 3. Hydrogen bonds form a 2D plane network in the salts of 1 and 3 and a 3D network in the salt cocrystal of 2. There are different π-π interactions in 1 to 3.The compounds have been characterized by powder X-ray diffraction, thermogravimetry/differential scanning calorimetry, and Fourier transform infrared spectroscopy. The compounds dehydration ends at 130°C to 150°C, and their oxidative decomposition is observed in the range of 250°C to 275°C. KEYWORDS barbituric and thiobarbituric acids, ciprofloxacin, infrared spectroscopy, salt cocrystal, thermal stability, X-ray diffraction Electronic supplementary information (ESI) available.

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Section: Resultssupporting

confidence: 88%

“…The main defined bond lengths and valence angles are shown in Table S2. They relate well to those found in 2 and in the literature for the CfH 2 + and Htba − ions . The asymmetrical part of the unit cell contains one CfH + ion, one Hba – ion and one H 2 O molecule (Figure C).…”

Section: Resultssupporting

confidence: 88%

Two salts and the salt cocrystal of ciprofloxacin with thiobarbituric and barbituric acids: The structure and properties

Головнев

Мolokeev

Lesnikov

et al. 2017

J of Physical Organic Chem

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“…Crystal, data collection, and structure refinement parameters are summarized in table 1. (2) were synthesized by reaction between 3,4-pyridinedicarboxylic acid (3,4-H 2 pdc) and 8.8311 (7) 8.2952(7) b (Å) 11.0546 (7) 12.5326(6) c (Å) 12.8617 (7) 13.6203…”

Section: Single-crystal X-ray Diffractionmentioning

confidence: 99%

“…The Cu⋯Cu distance for 1 within the 2-D sheets is 8.781 Å and between the sheets is 10.281 Å, while the corresponding Co⋯Co distances for 2 are 9.254 and 8.295 Å, respectively. (2), were synthesized by the diffusion method. Both compounds contain the partially deprotonated species 3,4-Hpdc − .…”

Section: Epr Studiesmentioning

confidence: 99%

“…Solid engineering is of interest for both structural and topological innovations of organicinorganic frameworks due to their potential applications in material science as catalytic, conductive, luminescent, magnetic, nonlinear optical, or porous devices [1][2][3][4][5]. Coordination polymer design depends not only on the chosen metals and organic linkers but also on the reaction conditions like temperature, solvents, and counter ions.…”

Section: Introductionmentioning

confidence: 99%

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2-D coordination polymers of copper and cobalt with 3,4-pyridinedicarboxylic acid: synthesis, characterization, and crystal structures

Scaldini

Corrêa

Yoshida

et al. 2014

Journal of Coordination Chemistry

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Two new complexes involving 3,4-pyridinedicarboxylic acid (3,4-H 2 pdc), copper(II) and cobalt(II) complexes, {[Cu(3,4-Hpdc) 2 (H 2 O) 2 ]·2dmso} n (1) and {[Co(3,4-Hpdc) 2 (H 2 O) 2 ]·2H 2 O·2dmso} n (2) (dmso = dimethylsulfoxide), have been synthesized by the diffusion method and characterized by elemental analysis, IR spectroscopy, thermal analysis, powder and single-crystal X-ray diffraction analysis, and electron paramagnetic resonance (EPR). In both compounds, the metal coordination sphere is composed of a trans-MO 4 N 2 core and adopts a distorted octahedral geometry in accordance with X-ray diffraction and EPR results. 3,4-Hpdc − ligands bridge the metal centers giving two-dimensional (2-D) coordination polymers with four-connected uninodal nets of (4,4) topology.

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Barbituric acids as a useful tool for the construction of coordination and supramolecular compounds

Mahmudov

Kopylovich

Maharramov

et al. 2014

Coordination Chemistry Reviews

159

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Synthesis, structural studies and vibrational spectroscopy of Fe2+ and Zn2+ complexes containing 4,4′-bipyridine and barbiturate anion

Cited by 21 publications

References 33 publications

Two salts and the salt cocrystal of ciprofloxacin with thiobarbituric and barbituric acids: The structure and properties

Two salts and the salt cocrystal of ciprofloxacin with thiobarbituric and barbituric acids: The structure and properties

2-D coordination polymers of copper and cobalt with 3,4-pyridinedicarboxylic acid: synthesis, characterization, and crystal structures

Barbituric acids as a useful tool for the construction of coordination and supramolecular compounds

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