title: Bis(μ-ferrocene-carboxyl-ato)bis-[aqua--bis(ferrocene-carboxyl-ato)methano-l-erbium(III)] methanol disolvate.
abstract: In the centrosymmetric title coordination compound, [Er(2){Fe(C(5)H(5))(C(6)H(4)O(2))}(6)(CH(3)OH)(2)(H(2)O)(2)]·2CH(3)OH, the two Er(III) ions are bridged by two ferrocene-carboxyl-ate anions as asymmetrically bridging ligands, leading to dimeric cores. The Er(III) ion has a distorted dodeca-hedral coordination with six coordinating O atoms derived from the ferrocene-carboxyl-ate ligands and two coordinated O atoms from one water mol-ecule and one methanol mol-ecule. The asymmetric unit comprises a half of the complex mol-ecule and a methanol solvent mol-ecule. Intra-molecular O-H⋯O and C-H⋯O inter-actions occur. In the crystal, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds and C-H⋯O as well as C-H⋯π inter-actions.
authors.affiliation: School of Chemistry and Chemical Engineering, Liaocheng University, Shandong 252059,  People's Republic of China.
authors.forename: Jianmin
authors.initials: J
authors.lastname: Liu
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Li
authors.forename: Dacheng
authors.initials: D
authors.lastname: Li