Abstract
The dinuclear barium-zinc complex, μ-chlorido-1:2κ(2) Cl:Cl-chlorido-2κCl-bis-(2-meth-oxy-ethanol-1κO)bis-(2-meth-oxy-ethanol-1κ(2) O,O')bis-(μ-tri-phenyl-acetato-1:2κ(2) O:O')bariumzinc, [BaZn(C20H15O2)2Cl2(C3H8O2)4], has been synthesized by the reaction of barium tri-phenyl-acetate, anhydrous zinc chloride and 2-meth-oxy-ethanol in the presence of toluene. The barium and zinc metal cations in the dinuclear complex are linked via one chloride anion and carboxyl-ate O atoms of the tri-phenyl-acetate ligands, giving a Ba⋯Zn separation of 3.9335 (11) Å. The irregular nine-coordinate BaO8Cl coordination centres comprise eight O-atom donors, six of them from 2-meth-oxy-ethanol ligands (four from two bidentate O,O'-chelate inter-actions and two from monodentate inter-actions), two from bridging tri-phenyl-acetate ligands and one from a bridging Cl donor. The distorted tetra-hedral coordination sphere of zinc comprises two O-atom donors from the tri-phenyl-acetate ligands and two Cl donors (one bridging and one terminal). In the crystal, O-H⋯Cl, O-H⋯O and C-H⋯Cl inter-molecular inter-actions form a layered structure, lying parallel to (001).
Highlights
The dinuclear barium–zinc complex, -chlorido-1:22Cl:Cl-chlorido-2Cl-bis(2methoxyethanol-1O)bis(2-methoxyethanol-12O,O0 )bis(-triphenylacetato1:22O:O0 )bariumzinc, [BaZn(C20H15O2)2Cl2(C3H8O2)4], has been synthesized by the reaction of barium triphenylacetate, anhydrous zinc chloride and
In the present paper we report the synthesis and structural characterization of a dinuclear Ba–Zn complex, namely -chlorido-1:22Cl:Cl-chlorido-2Cl-bis(2-methoxyethanol-1O)bis(2-methoxyethanol-12O,O0 )bis(-triphenylacetato-1:22O:O0 )bariumzinc, (I), and the structure is discussed
2-methoxyethanol ligand, the second is formed between a hydroxyl group O1H and an O-atom acceptor from a carboxyl group (O3) of a Ph3CCOO ligand (Fig. 1)
Summary
A few polynuclear heterometallic compounds containing barium and zinc connected by carboxylate bridges are known (Akine et al, 2006, 2009, 2010; Zhang et al, 2012; Bo et al., 2013). Among polynuclear complexes with triphenylacetate ligands, dinuclear Ba–Zn representatives have not previously been reported. We aimed to create a mixed-ligand compound containing zinc and barium cations, using barium triphenylacetate as a means of displacing chlorine atoms from zinc chloride. This procedure for removal of chlorine using triphenylacetate was successfully carried out in a reaction leading to the formation of a mixedmetal complex with a [Ba4Ti2] core (Kosińska-Klähn et al., 2014). In the present paper we report the synthesis and structural characterization of a dinuclear Ba–Zn complex, namely -chlorido-1:22Cl:Cl-chlorido-2Cl-bis(2-methoxyethanol-1O)bis(2-methoxyethanol-12O,O0 )bis(-triphenylacetato-1:22O:O0 )bariumzinc, (I), and the structure is discussed .
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