title: Tetrakis(imidazolyl)borate-based coordination polymers: group II network solids, M[B(Im)4]2(H2O)2 (M = Mg, Ca, Sr).
abstract: We are using the coordinating anion tetrakis(imidazolyl)borate to construct new metal-organic framework structures. In this report, we present three alkaline earth metal network solids incorporating this anion. All three compounds have the same formula, M[B(Im)(4)](2)(H(2)O)(2) (M = Mg, Ca, Sr), and the same coordination environment about the metal. However, the three compounds have different network structures with different degrees of hydrogen bonding; the Mg material forms a two-dimensional network and the Ca and Sr compounds form one-dimensional chains. In addition, we present the structure of the protonated anion B(HIm)(Im)(3) as a model for the default structure of this anion and discuss how the conformation of tetrakis(imidazolyl)borate can affect the structure of network solids.
authors.affiliation: Department of Chemistry, University of Akron, Akron, OH 44325-3601, USA.
authors.forename: Barton H
authors.initials: BH
authors.lastname: Hamilton
authors.forename: Kathryn A
authors.initials: KA
authors.lastname: Kelly
authors.forename: Wilhelm
authors.initials: W
authors.lastname: Malasi
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Ziegler