Nickel(II), Copper(II), and Silver(I) complexes of the thiophene containing ligand tris[4-(2-thienyl)-3-aza-3-butenyl]amine (TTME)

Kay, Danielle L., Daumann, Lena J., Hanson, Graeme R. and Gahan, Lawrence R. (2013) Nickel(II), Copper(II), and Silver(I) complexes of the thiophene containing ligand tris[4-(2-thienyl)-3-aza-3-butenyl]amine (TTME). Polyhedron, 64 151-157. doi:10.1016/j.poly.2013.03.030


Author Kay, Danielle L.
Daumann, Lena J.
Hanson, Graeme R.
Gahan, Lawrence R.
Title Nickel(II), Copper(II), and Silver(I) complexes of the thiophene containing ligand tris[4-(2-thienyl)-3-aza-3-butenyl]amine (TTME)
Journal name Polyhedron   Check publisher's open access policy
ISSN 0277-5387
1873-3719
Publication date 2013-11
Sub-type Article (original research)
DOI 10.1016/j.poly.2013.03.030
Volume 64
Start page 151
End page 157
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2014
Language eng
Formatted abstract
The nickel(II), copper(II), and silver(I) complexes of the ligand tris[4-(2-thienyl)-3-aza-3-butenyl]amine (TTME) have been prepared and characterized. The nickel(II) complex, [Ni(TTME)(NO3)](PF6), is six-coordinate, the copper(II) complex, [Cu(TTME)(NO3)](PF6), five-coordinate and the silver(I) complex, [Ag(TTME)](PF6)·H2O, four-coordinate. The silver(I) complex, unlike the complexes of Ni(II) and Cu(II), exhibits an apical nitrogen to silver distance that is significantly longer than the distance from the metal atom to the equatorial nitrogen donors. [Ag(TTME)](PF6)·H2O has the sulfur atoms of the thiophene oriented towards the silver ion in the center of the molecule. The EPR spectrum of the copper(II) complex is typical of tetragonally elongated Cu(II) complexes with the unpaired electron in the dx2 - y2 orbital (g|| > g⊥ (2.236 and 2.055, respectively); A|| ≫ A⊥ (172.0 and 10.0, respectively). The fully-decoupled 109Ag spectrum of [Ag(TTME)](PF6)·H2O displays a single positively phased peak (+585.58 ppm). Decoupling of the resonance at 3.80 ppm in the proton NMR allowed the elucidation of the 109Ag-1H coupling constant (8.57 Hz).
Keyword 109Ag NMR
Metal complexes
Thiophene
Tripodal ligands
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Chemistry and Molecular Biosciences
Centre for Advanced Imaging Publications
 
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Created: Wed, 19 Jun 2013, 14:39:21 EST by Sandrine Ducrot on behalf of Centre for Advanced Imaging