We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Copper(II) complexes with Schiff bases: Structures and thermal behavior.
- Authors
Dorovskikh, S.; Kuratieva, N.; Tkachev, S.; Trubin, S.; Stabnikov, P.; Morozova, N.
- Abstract
Ligands with Schiff bases are obtained in the condensation of propylenediamine (pda) or 2,2-dimethylpropylenediamine (dmpda) with acetylacetone (Hacac) in the 1:2 molar ratio. The ligands are characterized by the elemental analysis methods, T = 90-92 °C for pda(Hacac) (pda(acac) is N,N′-propylene-bis(acetylacetoniminato) (2-)), T = 84-86 °C for dmpda(Hacac) (dmpda(acac) is N,N′-2,2-dimethylpropylene-bis(acetylacetoniminato) (2-)). The tautomerism of the ligands is established by the single crystal X-ray diffraction (XRD) analysis, IR spectroscopy, and H, C NMR spectrometry. The synthesized complexes [Cu(pda(acac))] ( 1), T = 121-122 °C and [Cu(dmpda(acac))] ( 2), T = 156-158 °C are studied by the XRD method. In both complexes, copper atoms have a planar square geometry, and the chelate bond lengths and angles are: Cu-O ≈ Cu-N 1.903(2)-1.942(3) Å, ∠O-Cu-N = 94.44(12)-94.99(12)° for 1 and Cu-O ≈ Cu-N 1.909(1)-1.943(2) Å, ∠O-Cu-N = 94.63(6)° for 2. By the thermogravimetric method it is found that both complexes can be passed practically quantitatively into the gas phase.
- Subjects
COPPER compounds; SCHIFF bases; MOLECULAR structure; AMINE analysis; CONDENSATION; X-ray diffraction; SINGLE crystals spectra; THERMAL properties
- Publication
Journal of Structural Chemistry, 2014, Vol 55, Issue 6, p1067
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1134/S0022476614060092