The novel ligand 4′-phenyl-3,2′:6′,3′′-terpyridine ( L) and the supramolecular structure of the dinuclear complex [Zn 2(μ-L)(acac) 4] · H 2O (acac = acetylacetonato)
ABSTRACT The new terpyridyl ligand 4′-phenyl-3,2′:6′,3′′-terpyridine (L) reacts with Zn(acac)2 to produce the dizinc complex [Zn2(μ-L)(acac)4]·H2O (1) (acac=acetylacetonato). The analysis of the crystal structure of this zero-dimensional (0D) complex shows the existence of two Zn(acac)2 centers bridged symmetrically by one μ-L ligand. The key role played by the acac and L ligands and the guest water molecule allows the generation of a series of intermolecular hydrogen bonds of the O–H/O, C–H/O and C–H/π type which give raise to a 3D supramolecular array. The observed C–H/π interactions are so widespread that all the π-rings present in the structure, viz., those belonging to the L ligand as well as the acetylacetonato chelate rings, participate as hydrogen bond acceptors.
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ABSTRACT: [Pb(TpyCl)Cl][Pb(TpyCl)Cl2][PbCl3](CH3OH) (1), a new coordination polymer of divalent lead with the ligand 4′-chloro-2,2′:6′,2"-terpyridine (TpyCl), was obtained as single crystals by the branched tube method. The crystal structure contains three complexes, the cationic [Pb(TpyCl)Cl]+, the neutral [Pb(TpyCl)Cl2] and the anionic [PbCl3]–, which are connected through bridging chlorides and hydrogen bonds to a two-dimensional coordination polymer. In all three complexes, the arrangement around the Pb2+ ion suggests the existence of a stereoactive lone pair.Zeitschrift für anorganische Chemie 01/2009; 635(11):1523-1526. · 1.16 Impact Factor