| Yazarlar |
Dursun Ali Kose
Hacettepe Üniversitesi, Turkey |
Prof. Dr. Hacali NECEFOĞLU
Kafkas Üniversitesi, Türkiye |
|
Onur Şahin
Ondokuz Mayis Üniversitesi, Turkey |
|
Orhan Büyükgüngör
Ondokuz Mayis Üniversitesi, Turkey |
| Özet |
| The compound has been formed by mononuclear [Cu(C 9 H 7 O 4 ) 2 (C 6 H 6 N 2 O) 2 (H 2 O)] units in which the metal ion as well as the water ligand lies on a twofold symmetry axis, so that only one acetylsalicylate ligand and one nicotinamide ligand are independent. The distortion from ideal five-coordinate geometries can be described best by the degree of trigonality τ. For a regular square-pyramidal (SQP) geometry the trigonality parameter is 0 and for a trigonal-bipyramidal (TBP) structure it increases to 1. The copper coordination geometry is that of a square pyramid (τ = 0.23), with the N atoms from nicotinamide ligands and the bonded carboxylate O atoms from acetylsalicylate ligands defining the quasi-planar square base. The apical site is occupied by the aqua ligand, a bond which coincides with the twofold symmetry axis and is thus exactly perpendicular to the basal plane. The thermal decomposition takes place in four steps: removing of moisture, dehydration of aqua ligand, the elimination of the nicotinamide (na) ligand and the decomposition of acetyl-groups and oxidation of salicylate ion ligands. In complex, all ligands are coordinated to the metal ion as monodendate. The IR spectra of the intermediate products showed similar results. © 2010 Springer Science+Business Media, LLC. |
| Anahtar Kelimeler |
| Mixed ligand complexes | Thermal decomposition | Transition metal complexes | Crystal structure | Nicotinamide | Acetylsalicylate |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | JOURNAL OF CHEMICAL CRYSTALLOGRAPHY |
| Dergi ISSN | 1074-1542 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2011 |
| Cilt No | 41 |
| Sayı | 3 |
| Sayfalar | 297 / 305 |
| Doi Numarası | 10.1007/s10870-010-9876-6 |
| Atıf Sayıları | |
| WoS | 15 |
| SCOPUS | 13 |
| Google Scholar | 18 |
