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artículo con referato
"The new sulphur-containing ligand 4′-(4-methylthiophenyl)-3,2′:6′,3″-terpyridine (L1) and the supramolecular structure of the dinuclear complex [Zn2(μ-L1)(acac)4] (acac = acetylacetonato): The key role of non-covalent SO contacts and C–HS hydrogen bonds"
J. Granifo, R. Gaviño, E. Freire and R. Baggio
J. Mol. Struct. 1006(1-3) (2011) 684-691
The new terpyridyl ligand 4′-(4-methylthiophenyl)-3,2′:6′,3″-terpyridine (L1) combines with Zn(acac)2 to form the dizinc complex [Zn2(μ-L1)(acac)4] (1) (acac = acetylacetonato). The single crystal structure of 1 shows the existence of two different Zn(acac)2 centres bridged by the L1 ligand through its two 3-pyridyl-nitrogen atoms. The acac and L1 ligands allow the generation of a series of intra- and intermolecular hydrogen bonds of the C–HN, C–HO and C–Hπ type. In addition, the presence of the CH3-S group in L1 plays a crucial role by providing the non-covalent SO, SH and H(CH3)O contacts, which permit to describe fully this unusual supramolecular network. The NMR spectra of 1 in CDCl3 solution confirm the presence of the two zinc atoms joined by the bridging L1 ligand, but, differently to the solid state, their environments are identical.
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