title: Crystal structure of a two-dimensional grid-type iron(II) coordination polymer: poly[[di-aqua-tetra-μ-cyanido-diargentate(I)iron(II)] trans-1,2-bis(pyridin-2-yl)ethyl-ene disolvate].
abstract: In the title compound, {[Ag2Fe(CN)4(H2O)2]·2C12H10N2} n , the asymmetric unit contains one Fe(II) cation, two water mol-ecules, two di-cyanido-argentate(I) anions and two uncoordinating 1,2-bis-(pyridin-2-yl)ethyl-ene (2,2'-bpe) mol-ecules. Each Fe(II) atom is six-coordinated in a nearly regular octa-hedral geometry by four N atoms from di-cyanido-argentate(I) bridges and two coordinating water mol-ecules. The Fe(II) atoms are bridged by di-cyanido-argentate(I) units to give a two-dimensional layer with square-grid spaces. The inter-grid spaces with inter-layer distance of 6.550 (2) Å are occupied by 2,2'-bpe guest mol-ecules which form O-H⋯N hydrogen bonds to the host layers. This leads to an extended three-dimensional supra-molecular architecture. The structure of the title compound is compared with some related compounds containing di-cyanido-argentate(I) ligands and N-donor organic co-ligands.
authors.affiliation: Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kean 40002, Thailand.
authors.forename: Jintana
authors.initials: J
authors.lastname: Othong
authors.affiliation: Department of Chemistry, Faculty of Science and Technology, Thammasat University, Rangsit Campus, Klong Luang, Pathumthani 12121, Thailand.
authors.forename: Nanthawat
authors.initials: N
authors.lastname: Wannarit
authors.affiliation: Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
authors.forename: Chaveng
authors.initials: C
authors.lastname: Pakawatchai
authors.affiliation: Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kean 40002, Thailand.
authors.forename: Sujittra
authors.initials: S
authors.lastname: Youngme
keywords: 1,2-bis­(pyridin-2-yl)ethyl­ene; crystal structure; di­cyano­argentate(I); metal–organic framework