Metal complexes of taurine. The first reported solution equilibrium studies for complex formation by taurine at physiological pH; the copper(II)–glycylglycinate–taurine and the copper(II)–glycylaspartate–taurine systems

O'Brien, Eimear C.; Farkas, Etelka; Rockenbauer, Antal; Nolan, Kevin B.

doi:10.1016/s0162-0134(99)00182-8

Cited by 18 publications

(4 citation statements)

References 16 publications

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“…Furthermore, HEPES analog 2a undergoes weak complexation with metals such as Pr(III), Ni(II), and Cu(II) [10]. While ligand 2c has not been studied, 2b forms a ternary complex with [Cu(II)(Gly-Gly)] in which 2b acts as a monodenate N donor ligand [11]. In the presence of Zr(IV), HEPES and its analogs hydrolyzed Gly-Gly in the following order: 2 P 2a P 2b 2c.…”

mentioning

confidence: 99%

Tuning Zr(IV)-assisted peptide hydrolysis at near-neutral pH

Kassai¹,

Grant²

2008

Inorganic Chemistry Communications

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confidence: 99%

Tuning Zr(IV)-assisted peptide hydrolysis at near-neutral pH

Kassai¹,

Grant²

2008

Inorganic Chemistry Communications

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“…Table 2 (Supporting Information) lists the p K a values at 298 K of the amino acid salts obtained in this work and reported in the literature. ,− In this work, the ionic strengths of taurine and other amino acid salts were 0.01 and 0.02, respectively. The difference in ionic strength was very small, and the effect of ionic strength can be neglected.…”

Section: Resultsmentioning

confidence: 75%

Protonation Constants and Thermodynamic Properties of Amino Acid Salts for CO₂ Capture at High Temperatures

Yang

Wei

et al. 2014

Ind. Eng. Chem. Res.

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Amino acid salts have greater potential for CO2 capture at high temperatures than typical amine-based absorbents because of their low volatility, high absorption rate, and high oxidative stability. The protonation constant (pK a) of an amino acid salt is crucial for CO2 capture, as it decreases with increasing absorption temperature. However, published pK a values of amino acid salts have usually been determined at ambient temperatures. In this study, the pK a values of 11 amino acid salts were determined in the temperature range of 298–353 K using a potentiometric titration method. The standard-state molar enthalpies (ΔH m 0) and entropies (ΔS m 0) of the protonation reactions were also determined by the van’t Hoff equation. It was found that sarcosine can maintain a higher pK a than the other amino acids studied at high temperatures. We also found that the CO2 solubilities and overall mass-transfer coefficients of 5 m′ sarcosinate (moles of sarcosine per kilogram of solution) at 333–353 K are higher than those of 30% MEA at 313–353 K. These results show that some possible benefits can be produced from the use of sarcosine as a fast solvent for CO2 absorption at high temperatures. However, the pronotation reaction of sarcosine is the least exothermic among those of all amino acids studied. This could lead to a high regeneration energy consumption in the sarcosinate-based CO2 capture process.

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“…[3,4] Various Schiff-bases as ligands have been made in understanding and played important roles in Received Address correspondence to Yimin Jiang, Key Laboratory of Medicinal Chemical Resources and Molecular Engineering, School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, P. R. China. E-mail: jiangyimin1957@yahoo.com.cn coordination chemistry, [5][6][7][8][9] aiming at understanding chemical factors and the structural in physics, biology, and chemistry.…”

Section: Introductionmentioning

confidence: 99%

A New One-Dimensional Double Chains Cobalt Coordination Polymer With Taurine Schiff-Base and 4,4′-Bipyridine Ligands: Synthesis, Spectral, Thermal Properties, and Crystal Structure

Jiang

2013

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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A new 1D double chains cobalt(II) coordination polymer with the doubly deprotonated Schiff-base and 4,4 -bipyridine ligands, {[Co(Saes)(H 2 O)(Bipy)]·H 2 O} n , where H 2 Saes = 2-(2-hydroxybenzylideneamino)ethanesulfonic acid, has been synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analysis. The asymmetric unit of 1 comprises two cobalt(II) dimmer with tridentate Schiffbase, 4,4 -bipyridine, and water molecule ligands with the N 3 O 3 donor set, exhibiting a slightly distorted octahedral geometry. In the crystal, dimmers are interacted with O-H···O, C-H···O interactions and C-H···π stacking, leading to an interwoven threedimensional network and stabilizing the coordination complex.The spectral and thermal properties are also discussed.

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Metal complexes of taurine. The first reported solution equilibrium studies for complex formation by taurine at physiological pH; the copper(II)–glycylglycinate–taurine and the copper(II)–glycylaspartate–taurine systems

Cited by 18 publications

References 16 publications

Tuning Zr(IV)-assisted peptide hydrolysis at near-neutral pH

Tuning Zr(IV)-assisted peptide hydrolysis at near-neutral pH

Protonation Constants and Thermodynamic Properties of Amino Acid Salts for CO₂ Capture at High Temperatures

A New One-Dimensional Double Chains Cobalt Coordination Polymer With Taurine Schiff-Base and 4,4′-Bipyridine Ligands: Synthesis, Spectral, Thermal Properties, and Crystal Structure

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Metal complexes of taurine. The first reported solution equilibrium studies for complex formation by taurine at physiological pH; the copper(II)–glycylglycinate–taurine and the copper(II)–glycylaspartate–taurine systems

Cited by 18 publications

References 16 publications

Tuning Zr(IV)-assisted peptide hydrolysis at near-neutral pH

Tuning Zr(IV)-assisted peptide hydrolysis at near-neutral pH

Protonation Constants and Thermodynamic Properties of Amino Acid Salts for CO2 Capture at High Temperatures

A New One-Dimensional Double Chains Cobalt Coordination Polymer With Taurine Schiff-Base and 4,4′-Bipyridine Ligands: Synthesis, Spectral, Thermal Properties, and Crystal Structure

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Product

Resources

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Protonation Constants and Thermodynamic Properties of Amino Acid Salts for CO₂ Capture at High Temperatures