Metal complexes of amino acids and derivatives—VIII[1]

Chow, S.T.; McAuliffe, Charles A.; Sayle, Barry J.

doi:10.1016/0022-1902(73)80434-8

Cited by 23 publications

(6 citation statements)

References 9 publications

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“…The vibrational frequencies of the COO − group displayed a suitable shift because of the complexation with metal ions. In addition, the –NH 3 + bands in the zwitter ionic form appeared in the free glutamic acid at 3062 cm −1 , which shifted it to a very small value upon complexation (Table 2) [52,53]. The CN vibration band appeared at 1206 and 1242 cm −1 for NTA and Glu, respectively [54,55].…”

Section: Resultsmentioning

confidence: 99%

Design of Novel Oligomeric Mixed Ligand Complexes: Preparation, Biological Applications and the First Example of Their Nanosized Scale

Okasha

AL-Shaikh

Aljohani

et al. 2019

IJMS

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A successful oligomerization of ternary metal complexes, cobalt (II), nickel (II), copper (II), zinc (II), chromium (III) and ferric sulfate (III) with nitrilotriacetic acid (NTA) as a primary ligand and glutamic acid as a secondary ligand, has been demonstrated. The formation of oligomers arose from the presence of the sulfate moiety, which operates as a bridged bidentate ligand that coordinates with other metal moieties. The novel oligomers exhibited octahedral structures, which bonded together through the sulfate moiety. In silico predictions were conducted to gauge the bioactivity, physico-chemical and pharmacokinetic properties. The biological activities of these oligomers as well as their tumor inhibitory behavior have been explored. This work also presents a facile and novel method of preparing these materials in nanosize, using Cetyltrimethylammonium bromide (CTAB) and polyvinyl alcohol (PVA) as capping ligands. The size and shape of the nanomaterials have been confirmed using the transmission electron microscope (TEM) and the scanning electron microscope (SEM).

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Section: Resultsmentioning

confidence: 99%

Design of Novel Oligomeric Mixed Ligand Complexes: Preparation, Biological Applications and the First Example of Their Nanosized Scale

Okasha

AL-Shaikh

Aljohani

et al. 2019

IJMS

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“…This contradicts Atonva [26] who reported that complexes in which Ln 3þ is coordinated by -SH and -S groups are unlikely. The shift of as (NH þ 3 ) toward higher frequencies in the spectra of the complexes is typical for coordination of NH 2 [50] and the changes in the bands related with (NH þ 3 ) confirm coordination through the nitrogen atom [51]. Infrared spectra of the D-penicillamine complexes have no bands corresponding to free carboxylic group.…”

Section: Infrared Spectramentioning

confidence: 91%

Lanthanide complexes of D-penicillamine: formation constants, spectral and thermal properties

Sallam

Bahgat

Mahmoud

2006

Journal of Coordination Chemistry

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The complex-formation of lanthanide(III) elements with D-penicillamine have been investigated in acidic and neutral media. The macroscopic protonation constants of the ligand and the formation constants of [Ln.Pen] þ , [Ln.Pen 2 ] À , [Ln.Pen.OH] and [Ln.Pen.(OH) 2 ] À complexes were determined from pH-metric data using the BEST computer program. Elemental analyses of the solid complexes indicate formation of 1 : 1 metal : ligand species. The binding sites in the complexes with the possible role of -COO À , -NH 2 and -SH groups in the coordination have been discussed using infrared data. The complexes decompose in four steps as shown by their t.g. and d.t.a. analyses. A mechanism of decomposition is proposed which is supported by mass spectral data.

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“…Chemical Procedures. Metal-amino acid complexes were prepared and identified by elemental analysis and IR using variations on literature methods (23,24). Reactions were carried out in aqueous solution adjusted to pH 7, after addition of the corresponding amino acid and ND ND ND (15) Na2Sn03 ND ND ND "Eight millimoles (0.5 cm 3 as liquid).…”

Section: Methodsmentioning

confidence: 99%

Methylation of tin and lead in the environment: oxidative methyl transfer as a model for environmental reactions

Craig¹,

Rapsomanikis²

1985

Environ. Sci. Technol.

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Metal complexes of amino acids and derivatives—VIII[1]

Cited by 23 publications

References 9 publications

Design of Novel Oligomeric Mixed Ligand Complexes: Preparation, Biological Applications and the First Example of Their Nanosized Scale

Design of Novel Oligomeric Mixed Ligand Complexes: Preparation, Biological Applications and the First Example of Their Nanosized Scale

Lanthanide complexes of D-penicillamine: formation constants, spectral and thermal properties

Methylation of tin and lead in the environment: oxidative methyl transfer as a model for environmental reactions

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