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PROTONATED METAL COMPLEXES OF DIETHYLENETRIAMINEPENTAACETIC ACID (DTPA) |
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| Abstract: | Abstract Spectrophotometric studies in acidic solutions with pH between 1.10 and 1.80, show the presence of tetraprotonated complexes, MH4L, of Co(II), Cu(II) and Fe(III) with DTPA. Under identical conditions, Ni(II) forms the complex NiH2L. The effective and overall stability constants of these complexes are determined. |
| Keywords: | Aluminum alkyl cyclam macrocycle X-ray structure inclusion compounds |