Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 2, Pages 234-245Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201101022
Keywords
Redox chemistry; Materials science; Schiff bases; N ligands; Tetrathiafulvalene
Categories
Funding
- Major State Basic Research Development Program [2011CB808704]
- National Science Fund for Distinguished Young Scholars of China [20725104]
- National Natural Science Foundation of China (NSFC) [21021062, 51173075]
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pi-Conjugated tetrathiafulvalene (TTF)-based donors with a monoamine moiety, 2-[4,5-bis(methylthio)-1,3-dithiol-2-ylidene]-1,3-benzodithiol-5-amine (L-a) and 2-(5,6-dihydro[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-1,3-benzodithiol-5-amine (L-b), have been synthesized. Condensation of the TTF amines with different pyridinecarbaldehydes afforded new TTF-fused pi-xtended Schiff base ligands, L-a-imine-4-pyridyl (L-1), L-a-imine-3-pyridyl (L-2), and L-b-imine-2-pyridyl (L-3). Four metal complexes based on these Schiff base pyridine ligands, M(hfac)(2)(L)(2) (M = Cu-II, L = L-1, 4; M = Mn-II, L = L-1, 5; M = Cu-II, L = L-2, 6; hfac = hexafluoroacetylacetonate) and [Re(CO)(4)(L-3)][Re-2(CO)(6)Cl-3] (7), have been synthesized and structurally characterized. The ligands in all of the complexes show a near planar structure, and the different coordination modes of the metal ions and relative orientation of the terminal N donors result in a different crystalline organization in the solid state. The absorption spectra and redox behavior of these new compounds have been studied. These paramagnetic complexes are promising building blocks for the construction of multifunctional materials due to their planar structures and inherent redox properties.
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