ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The complexation of Cu2+ by N-isopropyl-2-methyl-1,2-propanediamine (L) has been studied by potentiometric and spectrophotometric titration. The dominant complexes formed in this system are [CuL]2+, [CuL2]2+, [Cu2L2(OH)2]2+, and [CuL(OH)2]. The data were thoroughly tested for different models with [CuL(OH)]+, [CuL(OH)]+, [Cu(OH)]+, and [Cu2(OH)2]2+ as additional species. The importance of steric factors is indicated by the d-d* spectra: for [CuL2]2+, (λmax = 499 nm) the absorption maximum is shifted by 50 nm to high energies relative to [Cu(en)2]2+, (λmax = 549 nm), whereas the opposite is true for the 1:1 complexes ([CuL]2+ : λmax = 712 nm,s [Cu(en)]2+ : λmax = 660 nm).
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19880710720
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