Details
| Original language | English |
|---|---|
| Pages (from-to) | 1913-1921 |
| Number of pages | 9 |
| Journal | POLYHEDRON |
| Volume | 24 |
| Issue number | 15 |
| Publication status | Published - 27 Oct 2005 |
| Externally published | Yes |
Abstract
The copper (II) perchlorate complexes with Schiff base ligands were investigated by X-ray single crystal analysis, electron spectroscopy, infrared and electron paramagnetic spectroscopy. The Schiff bases were obtained as condensation products of 2-pyridinecarboxaldehyde N-oxide with dipropylenetriamine (L1) and triethylenetetramine (L3), respectively. The structure of the complex [CuL2](ClO 4)2 was solved. In the structure, the ligand exists in the form of aliphatic polyamine containing two Schiff bases in contrary to the free form of this ligand with one pyrimidine ring and one Schiff base. Electronic spectra of the copper (II) perchlorate complexes of both ligands in different solvents were measured including time dependences. Vivid solvatochromic effect was observed for the complexes of both ligands. It was suggested that similar solvents cause similar equilibrium in the system and at least two different ways of isomerisation of the ligand during complexation exist.
Keywords
- 2-Pyridinecarboxaldehyde N-oxide, Copper (II) complexes, Dipropylenetriamine, Imidazolidine, Pyrimidine, Schiff base, Solvatochromism, Structure, Triethylenetetramine
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Inorganic Chemistry
- Materials Science(all)
- Materials Chemistry
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In: POLYHEDRON, Vol. 24, No. 15, 27.10.2005, p. 1913-1921.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Structure of the copper (II) perchlorate complex with Schiff base ligand containing pyridine N-oxide fragments and propylene bridges
T2 - Solvatochromic effect
AU - Boča, Miroslav
AU - Izakovič, Mário
AU - Kickelbick, Guido
AU - Valko, Marián
AU - Renz, Franz
AU - Fuess, Hartmut
AU - Matuzsná, Katarína
N1 - Funding Information: The authors greatly acknowledge to the Slovak APVT project 20-005204, to the MWFZ and Forschungsfond of the University Mainz and the DFG (SPP 1137; RE 1627/1-2), and to the Alexander von Humboldt Foundation for financial support.
PY - 2005/10/27
Y1 - 2005/10/27
N2 - The copper (II) perchlorate complexes with Schiff base ligands were investigated by X-ray single crystal analysis, electron spectroscopy, infrared and electron paramagnetic spectroscopy. The Schiff bases were obtained as condensation products of 2-pyridinecarboxaldehyde N-oxide with dipropylenetriamine (L1) and triethylenetetramine (L3), respectively. The structure of the complex [CuL2](ClO 4)2 was solved. In the structure, the ligand exists in the form of aliphatic polyamine containing two Schiff bases in contrary to the free form of this ligand with one pyrimidine ring and one Schiff base. Electronic spectra of the copper (II) perchlorate complexes of both ligands in different solvents were measured including time dependences. Vivid solvatochromic effect was observed for the complexes of both ligands. It was suggested that similar solvents cause similar equilibrium in the system and at least two different ways of isomerisation of the ligand during complexation exist.
AB - The copper (II) perchlorate complexes with Schiff base ligands were investigated by X-ray single crystal analysis, electron spectroscopy, infrared and electron paramagnetic spectroscopy. The Schiff bases were obtained as condensation products of 2-pyridinecarboxaldehyde N-oxide with dipropylenetriamine (L1) and triethylenetetramine (L3), respectively. The structure of the complex [CuL2](ClO 4)2 was solved. In the structure, the ligand exists in the form of aliphatic polyamine containing two Schiff bases in contrary to the free form of this ligand with one pyrimidine ring and one Schiff base. Electronic spectra of the copper (II) perchlorate complexes of both ligands in different solvents were measured including time dependences. Vivid solvatochromic effect was observed for the complexes of both ligands. It was suggested that similar solvents cause similar equilibrium in the system and at least two different ways of isomerisation of the ligand during complexation exist.
KW - 2-Pyridinecarboxaldehyde N-oxide
KW - Copper (II) complexes
KW - Dipropylenetriamine
KW - Imidazolidine
KW - Pyrimidine
KW - Schiff base
KW - Solvatochromism
KW - Structure
KW - Triethylenetetramine
UR - http://www.scopus.com/inward/record.url?scp=26444505977&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2005.06.009
DO - 10.1016/j.poly.2005.06.009
M3 - Article
AN - SCOPUS:26444505977
VL - 24
SP - 1913
EP - 1921
JO - POLYHEDRON
JF - POLYHEDRON
SN - 0277-5387
IS - 15
ER -