1,2-propylenediaminetetraacetate

Ferrates, 14 543. See aZso Iron entries Ferrate salts, 14 543 Ferredoxins, 14 555 Ferric 1,3-propylenediaminetetraacetic acid,(ferric 1,3-PDTA), 19 265... 

Co 8-hydroxyqninoline-5-snlfonate2] +2ef 8-hydroxyqninoline-5-snlfonate f NaOH, Co(N03)2 Co propylenediaminetetraacetate —>... 

Im and Busch, using the optical activity method, have also made a study of the exchange of the propylenediaminetetraacetate complexes of Co(III) and Co(II) (CoPY and CoPY ). This system can be treated by the McKay equation. Optical rotation data was obtained at temperatures between 80 and 100°C and various pH s between 2.0 and 7.0. This was again found to be consistent with exchange via two pathways k and k )... 

The determination of ee with chiral lanthanide shift reagents is normally performed in organic solvents. However, the development of chiral reagents capable of inducing shift nonequivalence in water, which is the appropriate solvent for many natural products, is of great importance. The europium(III) (R)-propylenediaminetetraacetate ion (Table 1) has been proposed as a chiral reagent suitable for use in aqueous solution90. 

The problem of forcing the molecule to adopt a fixed conformation is intriguing, and several systems have been developed for this purpose. The sexadentate d-( — )-propylenediaminetetraacetic acid can adopt two feasible configurations when coordinated to a cobalt(III) ion (Fig. 7) which arise from the movement of the acetate bridges when the d-( — )-propylenediamine ring conformation changes. The axial acetate group (O ) coordinated in... 

As in the case of the Mo u-edta complex the edta ligand in [Mo204(edta)]2 is coordinated to the binuclear core in a basket like conformation. Studies on complexes of Mo204+ having optically active amine-carboxylate ligands such as propylenediaminetetraacetate have been reported.121... 

C] )H)9N20g (HOOCCH2)2NCH2CH2 N(CH2COOH)2, propylenediaminetetraacetic acid (PDTA), H4L ... 

In a subsequent paper, Diamantis et al.2536 have reported the synthesis of compounds of type [Ru(H edta)L ] [L = CO, NO etc. (n = 1) and L = RCN (n = 2)] by reaction of [Ru(Hedta)OH2] with the appropriate ligand in the presence of H2/Pt. The compounds were characterized by a range of spectroscopic techniques which indicate that the ligands L are accommodated in equatorial positions. For L = N2, the anions [Ru(edta)N2]2- and [ Ru(edta) 2N2]4 were isolated. The corresponding Na2[Ru(pdta)N2] 2H20 (H4pdta = propylenediaminetetraacetic acid) has been prepared from [Ru(Hptda)(OH2)] H2O and NaN3,2537... 

Group 5 Systems. 51V NMR spectroscopy was used to follow the a-cis to (3-cA isomerisation of the Vv- propylenediaminetetraacetate complex.1036 The presence of isomerisation equilibria for (220) was studied by 3H, 13C and 51V NMR spectroscopy in solution,1037 51V solution NMR spectra were used to determine the species present in the systems II+/II2V04 /I I202/L-(+)-lactate or picolinate.1038,1039... 

Propylenediaminetetraacetic acid Trimethylenediaminetetraacetic acid Nitrilotriacetic acid Dihydroxyethylglycine trflns-l,2-Cyclohexanediaminetetraacetic acid Tetramethylenediaminetetraacetic acid, Pentamethylenediaminetetraacetic acid Hexamethylenediaminetetraacetic acid Octamethylenediaminetetraacetic acid... 

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