catena-Poly[[tetrakis(μ-3,4,5-trimethoxybenzoato-κ2O:O′)diruthenium(II,III)(Ru—Ru)]-μ-chlorido] with an unknown solvent

Abstract

[Ru2Cl{μ-O2CC6H2-3,4,5-(OMe)3}4]n was prepared by the reaction of [Ru2Cl(μ-O2CCH3]n with 3,4,5-trimethoxybenzoic acid. The complex shows a paddlewheel structure with pairs of Ru atoms bridged by four carboxylate ligands. The axial positions are occupied by shared chloride ions giving zigzag chains. These chains are disposed parallel to each other to give a three-dimensional arrangement packed only by van der Waals forces. The final refinement shows high values of residual non-modelled electronic density. Therefore, the SQUEEZE utility [Spek (2015). Acta Cryst. C71, 9–18] was used to remove its contribution to the overal intensity data. The electron density modelled by SQUEEZE is consistent with around eight water molecules per unit cell.

Keywords

• crystal structure
• diruthenium(II,III) complexes
• metal–metal bond
• carboxylates
• 3,4,5-trimethoxybenzoate