Anion diethylenetriamine

Brechbiel, M. W., Beitzel, P. M., and Gansow, O. A., Purification of p-nitroben-zyl C-functionalized diethylenetriamine pentaacetic acids for clinical applications using anion-exchange chromatography, J. Chromatogr A, 771, 63,1997. 

Table 1.8 Consecutive stability constants, expressed as logXMX., of complexes of ammonia (A), ethylene diamine (B), diethylenetriamine (C) and the anion of ethylenediaminetetraacetic acid (D4 ) at 20°C and 0.1 mKN03 as indifferent electrolyte. (According to J. Bjerrum and G.

Suzuki, T. M., Tanaka, D. A. P., Tanco, M. A. L., Kanesato, M., H., Yokoyama, T., Adsorption and removal of oxo-anions of arsenic and selenium on zirconium(IV) loaded polymer resin functionalized with diethylenetriamine-N, N,N ,N -polyacetic acid, J. Environ. Monit., 2, 2000, 550-555. 

The same type of Au- -N interaction between adjacent [Au(CN)4] anions is found in [Cu(dien)][Au(CN)4]2 and [Cu(en)2][Au(CN)4]2 (dien = diethylenetriamine en = ethylenediamine) [48], although in these examples the copper cations act as bridges between neighboring chains generating 2-D sheets, as shown in Figure 5.26. The Au- -N separations, of 3.001 and 3.137 A in the triamine complex and 3.035(8) A in the diamine one are similar to those in other tetracyanoaurate(III) derivatives. Additional weak hydrogen bonds between amino hydrogen and N(cyano) atoms increase the dimensionality of the supramolecular structure. 

Fig. 4. Analysis of an anion standard solution by IC (a) and CE (b) [48]. IC conditions aVydac 302IC4.6 column, a flow-rate of 2.5 ml/min, an injection volume of 25 xl, an isophthalic acid mobile phase, UV detection at 280 nm. CE conditions an electrolyte of potassium dichromate, sodium tetraborate, boric acid and the DETA (diethylenetriamine) EOF modifier, pH 7.8 65 cmX75 xm I.D. capillary 20 kV indirect UV detection at 280 nm. Anions 1, chloride 2, nitrite 3, chlorate 4, nitrate 5, sulfate 6, thiocyanate 7, perchlorate 8, bromide.

The free ion, Cu2+, appears to be the major species of Cu taken up by plants (Graham, 1981 Jones and Jarvis, 1981). Hence Cu complexation will decrease uptake (DeKock and Mitchell, 1957) unless the complex can dissociate and/or diffuse quickly enough to maintain a constant supply of Cu2+ at the root surface. In the case of Zn, the presence of humic acid (Chen and Aviad, 1990) and carboxylic acids (EDTA, diethylenetriamine pentaacetic acid (DTPA), nitrilotriacetic acid (NTA) DeKock and Mitchell, 1957) has been found to decrease absorption but it is not known whether Zn uptake is correlated with Zn2+ in solution because Zn speciation was not estimated. Other work has shown that Zn initially complexed with citrate is taken up by barley from nutrient solutions (Chairidchai and Ritchie, 1993) and the presence of chelates (EDTA, citrate) can speed up the diffusion of Zn to a root surface in soils (Hodgson et al., 1967 Elgawhary et al., 1970). Speciation in solution is particularly important in the uptake of iron because of its extremely low solubility in the absence of complexing anions... 

The synthesis of lanthanide complexes [244] with multidentate diethylenetriamine (dien) gave rise to two types of complexes, Ln(dien)3(N03>3 for Ln = La-Gd, and Ln(dien)2(N03)3 for Ln = La-Yb. The tris complexes contain ionic nitrate while the bis complexes contain both ionic and coordinated nitrate ions. The coordination number is nine in the tris complexes while it is not known with certainty in the bis complexes. With triethylene triamine (tren) two types of complexes [Ln(tren)(N03)3] and Ln(tren)2(N03)3 have been isolated. In the bis complexes both ionic and coordinated nitrate groups are present for larger lanthanides (La-Nd) but only ionic nitrate for smaller lanthanides (Sm-Yb). When perchlorate is the anion [245] Ln(tren)(C104)3 (Ln = Pr, Gd, Er) and Ln(tren)2(C104)3 for Ln = La, Pr, Nd, Gd, Er complexes were obtained. The monocomplexes contain coordinated perchlorate ions while the bis complexes contain ionic perchlorate ions. 

The organic amine extractants are the most commonly used anion exchangers. Secondary amines have been used to recover uranium from leach liquors (GlO) secondary and tertiary amines to recover molybdenum from uranium mill circuits (L13) a primary amine, diethylenetriamine-penta-acetic acid (DTPA) to extract cerium group lanthanides (B6) tri-,V-butylamine-3-methyl-2-butanonc to separate yttrium and rare earth nitrates (G13) tricaprylyl amine (Alamine 336) and methyltrioctyl-ammonium salt (Aliquat 336) to recover vanadium from acidic solutions (A3) and Aliquat 336 to extract vanadium from slightly acidic or alkaline leach liquor (S36). 

Na), also contain / cwJo-pentagonal bipyramidal anions with an axial lone pair (Figure 32). F cwJo-seven-coordinate antimony (six O/N-donors and a lone pair) is also present in complex anions derived from l,2-cyclohexanediamine-7V,A,A A -tetra-acetic aeid, diethylenetriamine-penta-acetic acid, and triethylenetetraminehexa-acetic acid. Several of these complexes show anti-tumor activity, which appears to vary with the fine detail of the geometry. 

Cationic complexes. There are numerous four-coordinate complexes such as [AuCl2py2]Cl, [AuphenCl2]Cl. Chloroauric acid reacts with diethylenetriamine to give the ammonium tetrachloroaurate, [Au dienCl]Cl2 or [Au(dienH)Cl]Cl, depending on the concentration and pH.32 The kinetics of substitution of various anions in [AudienCl]2 + have been compared with those for planar Pt11 there is evidence that axial interactions occur here also in solution, e.g.,... 

Figure 10.383 Analysis of diethylenetriamine-penta(methylenephosphonic add) in formation water with on-column preconcetration on a high-capacity anion exchanger. Separator column lonPac AS11-HC with NG1 guard column eluent nitric acid gradient linear.

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