Iminodiacetato, methyliminodiacetato, and 1,3-propanediaminetetraacetato complexes of chromium(III)

Weyh, John A.; Hamm, Randall E.

doi:10.1021/ic50069a049

Cited by 86 publications

(14 citation statements)

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“…All solvents (anhydrous grade) were obtained from Aldrich and used as supplied. K 2 [RuCl 5 (OH 2 )], [50] ({3-[bis(carboxymethyl)amino]propyl}(carboxymethyl)amino)acetic acid (3), [41] N,NЈ-bis(2-pyridylmethyl)-ethylenediamine-N,NЈ-diacetic acid (15), [43] methyl 6-(hydroxymethyl)pyridine-2-carboxylate (17), [44] 6-(hydroxymethyl)pyridine-2-carbaldehyde (21), [45] iminodiacetic acid di-tert-butyl ester, [46] 2,6-bis(bromomethyl)pyridine hydrogen bromide (25), [48] and N-(hydroxyethyl)iminodiacetic acid di-tert-butyl ester [49] were pre-pared according to literature procedures. 1 H NMR and 13 C NMR spectra were recorded with a Bruker Avance 300 with chemical shifts referenced to SiMe 4 .…”

Section: Methodsmentioning

confidence: 99%

Ru^III Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Storr

Cameron²,

Gossage

et al. 2005

Eur J Inorg Chem

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In this study a series of Ru III complexes, chelated by analogues of ethylenediaminetetraacetic acid (edta) and diethylenetriaminepentaacetic acid (dtpa), were produced and tested for NO scavenging ability. Modifications to the edta and dtpa ligand frameworks were made in an effort to alter the reactivity, aqueous stability and pharmacokinetics of the resulting Ru III complexes. The X-ray structure of the nitrosyl complex 38 confirms that the Ru III complex 27 reacts with NO to form a linear {Ru-NO} [6] complex. The nitrosyl complex [C 15

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Section: Methodsmentioning

confidence: 99%

Ru^III Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Storr

Cameron²,

Gossage

et al. 2005

Eur J Inorg Chem

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“…1,4-Butylenediaminetetraacetic acid (I ,4-BDTA) was synthesized by a method analogous to the synthesis of 1,3-propylenediaminetetraacetic acid (8). Cadmium nitrate (Fisher Certified Reagent), zinc nitrate, and mercuric nitrate (Baker Analyzed Reagents) and MIDA (K and K laboratories) were used as received.…”

Section: Methodsmentioning

confidence: 99%

Nuclear Magnetic Resonance Studies of the Solution Chemistry of Metal Complexes. XIII. The Lability of the Metal–Nitrogen Bonds in the Cadmium, Zinc, and Mercury Complexes of Selected Polyaminocarboxylic Acids

Rabenstein¹,

Blakney²,

Fuhr³

1975

Can. J. Chem.

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(1975).The lability of the metal-nitrogen bonds in the Cd(II), Zn(II), and Hg(I1) complexes of (H02CCH2)2N(CH2)nN(CH2C02H)2 (n = 2, 3, 4) has been investigated by proton magnetic resonance spectroscopy. The acetate methylenic protons of each of the complexes give rise t o AB multiplet patterns, indicating the metal-nitrogen bonds to be inert on the n.m.r. time scale. From the temperature dependence of the multiplet patterns, the relative lability of the metal-nitrogen bonds in each series of complexes has been established. In the Cd(I1) and Zn(I1) complexes, the metal-nitrogen bonds become more labile as the size of the internal chelate ring increases whereas it becomes more inert in the Hg(I1) complexes. Also, the mercury-proton coupling constants increase as n is increased from two to four, which is interpreted as evidence that the increased kinetic stability results from structural changes to a more linear N-Hg-N arrangement. The metal-nitrogen bonds in the Cd(I1) complexes havingn = 3 and4 is more labile than in the corresponding Zn(I1) complexes. The thermodynamic stability patterns of the complexes are discussed in terms of their relative kinetic stabilities. DALLASL. RIBENSTEIN, GEORGE BLAKNEY BRYAN J. FUHR. Can. J. Chem. 53,787 (1975). On aCtudiC, par r.m.p., la labiliti des liens metaux-azote dans des complexes du Cd(II), Zn(I1) et du Hg(II) avec (HO~CCHZ)ZN(CHZ)~N(CH~COZH)~ (n = 2, 3,4). Les protons methylCniques de I'acetate de chaque complexe donnent lieu des patrons de type AB sous forme de multiplets, indiquant que les liens metaux-azote sont inertes a I'echelle de temps de la r.m.n. Onapu etablir, grhce la dependance sur la temperature des patrons des multiplets, la labilite relative des liens metaux-azote dans chaque sene des complexes. Dans les complexes Cd(I1) et Zn(II), les liens metaux-azote deviennent plus labiles a mesure que la grandeur du cycle chelate interne augmente alors qu'ils deviennent plus inertes dans les complexes du Hg(I1). De plus les constantes d e couplage mercure-proton augmentent lorsque n augmente de 2 a 4; on interprete ces rksultats comme signifiant que la stabilite cinetique accrue resulte de changements structuraux menant a des arrangements N-Hg-N plus lineaires. Les liens mitaux-azote dans les complexes avec Cd(I1) dans lesquels n = 3 e t 4 sont plus labiles que dans les complexes Zn(I1) wrrespondants. O n discute des patrons de stabilite thermodynamique des complexes en terme de leur stabilitk cinktique relative.[Traduit par le journal]

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“…Analyses for C, H, N were performed on a Carlo Erba 1108 Elemental Vario EL analyser. The precursor salt, Na[Cr(1,3-pdta)]Á3H 2 O was prepared as described previously (Weyh & Hamm, 1968;Herak et al, 1984). The sodium salt (0.20 g) was dissolved in 15 mL of water at 323 K and added to 3 mL of water containing 0.5 g of AgNO 3 .…”

Section: Synthesis and Physical Measurementsmentioning

confidence: 99%

Crystal structure of silver [(propane-1,3-diyldinitrilo-κ²N,N′)tetraacetato-κ⁴O,O′,O′′,O′′′]chromate(III) from synchrotron X-ray data

2018

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The asymmetric unit of the title compound, Ag[Cr (C 11 ion is coordinated to the four O and two N atoms of the 1,3-pdta ligand, displaying a distorted octahedral geometry. The mean Cr-N and Cr-O bond lengths are 2.0727 (17) and 1.9608 (15) Å , respectively. The conformations of the chelate rings were found to be envelope for the glycinates and twist-boat for the six-membered diamine (T) ring. The Ag + cation is surrounded by six O atoms from three noncoordinated carbonyl O atoms of neighbouring 1,3-pdta groups and three water molecules. The crystal structure is stabilized by intermolecular hydrogen bonding involving the water O-H group as donor and the carboxyl O atom as acceptor.

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Iminodiacetato, methyliminodiacetato, and 1,3-propanediaminetetraacetato complexes of chromium(III)

Cited by 86 publications

References 0 publications

Ru^III Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Ru^III Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Nuclear Magnetic Resonance Studies of the Solution Chemistry of Metal Complexes. XIII. The Lability of the Metal–Nitrogen Bonds in the Cadmium, Zinc, and Mercury Complexes of Selected Polyaminocarboxylic Acids

Crystal structure of silver [(propane-1,3-diyldinitrilo-κ²N,N′)tetraacetato-κ⁴O,O′,O′′,O′′′]chromate(III) from synchrotron X-ray data

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Iminodiacetato, methyliminodiacetato, and 1,3-propanediaminetetraacetato complexes of chromium(III)

Cited by 86 publications

References 0 publications

RuIII Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

RuIII Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Nuclear Magnetic Resonance Studies of the Solution Chemistry of Metal Complexes. XIII. The Lability of the Metal–Nitrogen Bonds in the Cadmium, Zinc, and Mercury Complexes of Selected Polyaminocarboxylic Acids

Crystal structure of silver [(propane-1,3-diyldinitrilo-κ2N,N′)tetraacetato-κ4O,O′,O′′,O′′′]chromate(III) from synchrotron X-ray data

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Ru^III Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Ru^III Complexes of Edta and Dtpa Polyaminocarboxylate Analogues and Their Use as Nitric Oxide Scavengers

Crystal structure of silver [(propane-1,3-diyldinitrilo-κ²N,N′)tetraacetato-κ⁴O,O′,O′′,O′′′]chromate(III) from synchrotron X-ray data