Abstract
The novel transition metal saccharinate complexes of triethanolamine (TEA) have been synthesized and characterized by elemental analyses, magnetic moments, LTV-Vis and IR spectra. Mn(II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) form mononuclear complexes of [M(TEA)(2)](SAC)(2), where SAC is the saccharinate ion, while the Cu(II) complex is dimeric. The TEA ligand acts as a tridentate N,O,O'-donor ligand and one ethanol group is not involved in coordination. The SAC ion does not coordinate to the metal ions and is present as the counter-ion in the Mn(II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) complexes, but coordinates to the Cu(II) ion as a monodentate ligand. The crystal structures of the [Co(TEA)(2)](SAC)(2) and [Cu-2(mu-TEA)(2)(SAC)(2)].2(CH3OH) complexes were determined by single crystal x-ray diffraction. The Co(II) ion has a distorted octahedral coordination by two TEA ligands. The Cu(II) complex crystallizes as a dimethanol solvate and has doubly alkoxo-bridged centrosymmetric dimeric molecules involving two tridentate triethanolaminate (deprotonated TEA) and two monodentate SAC ligands. The geometry of each Cu(II) ion is a distorted square pyramid. Both crystal structures are stabilized by hydrogen bonds to form a three-dimensional network.
| Original language | English |
|---|---|
| Pages (from-to) | 805-815 |
| Number of pages | 11 |
| Journal | Journal of Coordination Chemistry |
| Volume | 55 |
| DOIs | |
| Publication status | Published - 2002 |
Keywords
- saccharin complexes
- triethanolamine complexes
- crystal structures
- THERMAL-PROPERTIES
- CU(II)
- <M(C7H4NO3S)2(H2O)4>.2H2O
- DIETHANOLAMINE
- TRANSITION
- CO(II)
- NI(II)
Cite this
Synthesis, characterization and spectral studies of triethanolamine complexes of metal saccharinates. Crystal structures of [Co(TEA)(2)](SAC)(2) and [Cu-2(mu-TEA)2(SAC)(2)]center dot 2(CH3OH). / Topcu, Y ; Andac, O ; Yilmaz, V T ; Harrison, W T A .
In: Journal of Coordination Chemistry, Vol. 55, 2002, p. 805-815.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Synthesis, characterization and spectral studies of triethanolamine complexes of metal saccharinates. Crystal structures of [Co(TEA)(2)](SAC)(2) and [Cu-2(mu-TEA)2(SAC)(2)]center dot 2(CH3OH)
AU - Topcu, Y
AU - Andac, O
AU - Yilmaz, V T
AU - Harrison, W T A
PY - 2002
Y1 - 2002
N2 - The novel transition metal saccharinate complexes of triethanolamine (TEA) have been synthesized and characterized by elemental analyses, magnetic moments, LTV-Vis and IR spectra. Mn(II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) form mononuclear complexes of [M(TEA)(2)](SAC)(2), where SAC is the saccharinate ion, while the Cu(II) complex is dimeric. The TEA ligand acts as a tridentate N,O,O'-donor ligand and one ethanol group is not involved in coordination. The SAC ion does not coordinate to the metal ions and is present as the counter-ion in the Mn(II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) complexes, but coordinates to the Cu(II) ion as a monodentate ligand. The crystal structures of the [Co(TEA)(2)](SAC)(2) and [Cu-2(mu-TEA)(2)(SAC)(2)].2(CH3OH) complexes were determined by single crystal x-ray diffraction. The Co(II) ion has a distorted octahedral coordination by two TEA ligands. The Cu(II) complex crystallizes as a dimethanol solvate and has doubly alkoxo-bridged centrosymmetric dimeric molecules involving two tridentate triethanolaminate (deprotonated TEA) and two monodentate SAC ligands. The geometry of each Cu(II) ion is a distorted square pyramid. Both crystal structures are stabilized by hydrogen bonds to form a three-dimensional network.
AB - The novel transition metal saccharinate complexes of triethanolamine (TEA) have been synthesized and characterized by elemental analyses, magnetic moments, LTV-Vis and IR spectra. Mn(II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) form mononuclear complexes of [M(TEA)(2)](SAC)(2), where SAC is the saccharinate ion, while the Cu(II) complex is dimeric. The TEA ligand acts as a tridentate N,O,O'-donor ligand and one ethanol group is not involved in coordination. The SAC ion does not coordinate to the metal ions and is present as the counter-ion in the Mn(II), Co(II), Ni(II), Zn(II), Cd(II) and Hg(II) complexes, but coordinates to the Cu(II) ion as a monodentate ligand. The crystal structures of the [Co(TEA)(2)](SAC)(2) and [Cu-2(mu-TEA)(2)(SAC)(2)].2(CH3OH) complexes were determined by single crystal x-ray diffraction. The Co(II) ion has a distorted octahedral coordination by two TEA ligands. The Cu(II) complex crystallizes as a dimethanol solvate and has doubly alkoxo-bridged centrosymmetric dimeric molecules involving two tridentate triethanolaminate (deprotonated TEA) and two monodentate SAC ligands. The geometry of each Cu(II) ion is a distorted square pyramid. Both crystal structures are stabilized by hydrogen bonds to form a three-dimensional network.
KW - saccharin complexes
KW - triethanolamine complexes
KW - crystal structures
KW - THERMAL-PROPERTIES
KW - CU(II)
KW - <M(C7H4NO3S)2(H2O)4>.2H2O
KW - DIETHANOLAMINE
KW - TRANSITION
KW - CO(II)
KW - NI(II)
U2 - 10.1080/0095897022000001557
DO - 10.1080/0095897022000001557
M3 - Article
VL - 55
SP - 805
EP - 815
JO - Journal of Coordination Chemistry
JF - Journal of Coordination Chemistry
SN - 0095-8972
ER -