Syntheses and structures of vanadium(III) complexes containing 1,3-diaminopropane-N,N,N',N'-tetraacetate ([V(trdta)]-) and 1,3-diamino-2-propanol-N,N,N',N'-tetraacetate ([V2(dpot)2]2-)

Robles, Julita C.; Matsuzaka, Yoko; Inomata, Shinji; Shimoi, Mamoru; Mori, Wasuke; Ogino, Hiroshi

doi:10.1021/ic00053a003

Cited by 68 publications

(56 citation statements)

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“…However, the V(III) complexes are very different. Na[V(trdta)] is 6-coordinate pseudo-octahedral about V(III) [65].With EDTA, however, V(III) yields the 7-coordinate Na[V(edta)(H 2 O)] complex featuring an extra equatorial water ligand. Log β=26.5 for formation of 7-coordinate [V(edta)(H 2 O)] − relative to log β=18.5 for [V(trdta)] − [66], indicating the far greater stability of the former complex.…”

Section: Discussionmentioning

confidence: 99%

The uptake and fate of vanadyl ion in ascidian blood cells and a detailed hypothesis for the mechanism and location of biological vanadium reduction. A visible and X-ray absorption spectroscopic study

Frank

Carlson²,

Carlson³

et al. 2008

Journal of Inorganic Biochemistry

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Vanadium K-edge x-ray absorption spectroscopy (XAS) has been used to track the uptake and fate of VO 2+ ion in blood cells from Ascidia ceratodes, following exposure to dithiothreitol (DTT) or to DTT plus VO 2+ . The full range of endogenous vanadium was queried by fitting the XAS of blood cells with the XAS spectra of model vanadium complexes. In cells exposed only to DTT, ~0.4% of a new V(III) species was found in a site similar to Na[V(edta)(H 2 O)]. With exposure to DTT and VO 2+ , average intracellular [VO(aq)] 2+ increased from 3% to 5%, and 6% of a new complexed form of vanadyl ion appeared evidencing a ligand array similar to [VO(edta)] 2− . At the same time, the relative ratio of blood cell [V(H 2 O) 6 ] 3+ increased at the expense of [V(H 2 O) 5 (SO 4 )] + in a manner consistent with a significant increase in endogenous acidity. In new UV/visible experiments, VO 2+ could be reduced to 7-coordinate [V(nta)(H 2 O) 3 ] or [V(nta)(ida)] 2− with cysteine methyl ester in pH 6.5 solution. Ascorbate reduced [VO(edta)] 2− to 7-coordinate [V(edta)(H 2 O)] − , while [VO (trdta)] 2− was unreactive. These results corroborate the finding that the reductive EMF of VO 2+ is increased by the availability of a 7-coordinate V(III) product. Finally a new and complete hypothesis is proposed for an ascidian vanadate reductase. The structure of the enzyme active site, the vanadatevanadyl-vanadic reduction mechanism, the cellular locale, and elements of the regulatory machinery governing the biological reduction of vanadate and vanadyl ion by ascidians are all predicted. Together these constitute the new field of vanadium redox enzymology.Phlebobranch ascidians (tunicates) are vanadium-concentrating, filter-feeding marine Urochordates that have a continuous evolutionary history reaching back into the upper Cambrian [1][2][3][4]. Although vanadium in ascidian blood cells has been under active investigation for almost 100 years [5][6][7], the mechanisms of uptake, transport, and reduction of oceanic © 2008 Elsevier Inc. All rights reserved.Contact Information: Dr. Patrick Frank, Tel: 1-650-723-2479, Fax: 1-650-723-4817, frank@ssrl.slac.stanford.edu. Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. NIH Public Access NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript vanadate remain largely unknown. The biologically unique highly acidic intracellular vacuolar aqua vanadium (III, IV) solutions, concentrated primarily in so-called signet ring blood cells, has been successfully described [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Biologically ex...

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Section: Discussionmentioning

confidence: 99%

The uptake and fate of vanadyl ion in ascidian blood cells and a detailed hypothesis for the mechanism and location of biological vanadium reduction. A visible and X-ray absorption spectroscopic study

Frank

Carlson²,

Carlson³

et al. 2008

Journal of Inorganic Biochemistry

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“…1 B 2g transitions. [39,46] These transitions, as well as FIGURE 2 Absorption and emission spectra of DMATP and its metal complexes in DMF the measured values of the magnetic moment which are 0.634 and 0.62, respectively, suggest a square planar stereochemistry of the two complexes. Based on the foregoing results from elemental analysis, conductivity, magnetic moment, spectral and thermal measurements, and considering the cis rearrangement of the ligand in the complexes, tentative structures (Scheme 2) are proposed for the synthesized metal complexes.…”

Section: Spectral and Magnetic Characteristics Of Dmatp-metal Complmentioning

confidence: 87%

“…π* transition band at 395 nm. [39] From the magnetic moment value the percent tetrahedral geometry (N t ) can be estimated using the following relation: [36] …”

Section: Spectral and Magnetic Characteristics Of Dmatp-metal Complmentioning

confidence: 99%

Metal complexes of chalcone analogue: Synthesis, characterization, DNA binding, molecular docking and antimicrobial evaluation

Atlam

El‐Nahass

Bakr

et al. 2017

Applied Organom Chemis

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A novel chalcone, namely 5-(4-(dimethylamino)phenyl)-1-(thiophen-2-yl)penta-2,4-dien-1-one, DMATP, and its complexes with nickel(II), vanadium(III), palladium(II) and platinum(II) metal ions were synthesized and characterized using a set of chemical and spectroscopic tools including elemental analysis, electrical conductance, magnetic susceptibility and spectral techniques. The interactions of the synthesized chalcone and its metal complexes with DNA were studied using steady-state absorption and emission techniques as well as viscosity and electrochemical measurements. The obtained results confirm DNA intercalation. Additionally, theoretical studies were performed for all the investigated compounds using DFT/B3LYP calculations. The optimized geometries are found to be in good agreement with the suggested experimental structures. The bond lengths, bond angles, chemical reactivity, energy components, binding energy and dipole moment were evaluated. Also, theoretical infrared intensities and thermodynamic parameters for all compounds were calculated. Molecular docking calculations show that the Ni(II) complex exhibits the highest DNA binding activity, which agrees well with the experimental results. Finally, the compounds were screened for antimicrobial activity using several microorganisms.

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“…При комплексообразовании H 5 Hpdta координация гидроксильной группы в пропиленовом мостике с образованием дополнительного цикла происходит только с катионами большого радиуса, при этом, как правило, образуются би-и полиядерные комплексы [1][2][3][4][5][6]. Так, с ванaдием (ІІІ) и неодимом (ІІІ) получены биядерные координационные соединения состава A 2 12 ]×80H 2 O [6].…”

Section: Ohunclassified

“…Это находится в соответствии с характером их термического разложения, а также с данными СДО комплексов германия с кобальтом и никелем. В спектрах диффузного отражения для первого наблюдаются две полосы, соот-ветствующие переходам 4 В соответствии с данными ИК-спектроскопии и термогравиметрии простран-ственная организация и набор донорных атомов в координационной сфере герма-ния в гетероядерном комплексе с хромом сохраняются такими же, как и с лантаном [(ОН)Ge(m-Hpdta)(m-OH)Cr(H 2 O)]×Н 2 О (6). Учитывая валентное состояние хрома равное трем и возможное для него координационное число -шесть, можно пред-положить, что его полиэдр формируется за счет трех валентных связей с кислоро-дами двух карбоксильных групп лиганда и мостиковой гидроксогруппы, а также трех координационных связей с атомом азота и кислородами мостиковой депрото-нированной гидроксогруппы лиганда и молекулы воды (см.…”

Section: результаты и их обсуждениеunclassified

2-Hydroxypropyl-1,3-Diamintetraacet Agermanatics:synthesis, Properties, Structural Features

Марцинко¹

2015

Odesa National University Herald. Chemistry

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Syntheses and structures of vanadium(III) complexes containing 1,3-diaminopropane-N,N,N',N'-tetraacetate ([V(trdta)]-) and 1,3-diamino-2-propanol-N,N,N',N'-tetraacetate ([V2(dpot)2]2-)

Cited by 68 publications

References 0 publications

The uptake and fate of vanadyl ion in ascidian blood cells and a detailed hypothesis for the mechanism and location of biological vanadium reduction. A visible and X-ray absorption spectroscopic study

The uptake and fate of vanadyl ion in ascidian blood cells and a detailed hypothesis for the mechanism and location of biological vanadium reduction. A visible and X-ray absorption spectroscopic study

Metal complexes of chalcone analogue: Synthesis, characterization, DNA binding, molecular docking and antimicrobial evaluation

2-Hydroxypropyl-1,3-Diamintetraacet Agermanatics:synthesis, Properties, Structural Features

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