title: A two-dimensional silver(I) coordination polymer constructed from 4-aminophenylarsonate and triphenylphosphane: poly[[(μ₃-4-aminophenylarsonato-κ³N:O:O)(triphenylphosphane-κP)silver(I)] monohydrate].
abstract: The title compound, {[Ag(C6H7AsNO3)(C18H15P)]·H2O}n, has been synthesized from the reaction of 4-aminophenylarsonic acid with silver nitrate, in aqueous ammonia, with the addition of triphenylphosphane (PPh3). The Ag(I) centre is four-coordinated by one amino N atom, one PPh3 P atom and two arsonate O atoms, forming a severely distorted [AgNPO2] tetrahedron. Two Ag(I)-centred tetrahedra are held together to produce a dinuclear [Ag2O2N2P2] unit by sharing an O-O edge. 4-Aminophenylarsonate (Hapa(-)) adopts a μ3-κ(3)N:O:O-tridentate coordination mode connecting two dinuclear units, resulting in a neutral [Ag(Hapa)(PPh3)]n layer lying parallel to the (101̄) plane. The PPh3 ligands are suspended on both sides of the [Ag(Hapa)(PPh3)]n layer, displaying up and down orientations. There is an R2(2)(8) hydrogen-bonded dimer involving two arsonate groups from two Hapa(-) ligands related by a centre of inversion. Additionally, there are hydrogen-bonding interactions involving the solvent water molecules and the arsonate and amine groups of the Hapa(-) ligands, and weak π-π stacking interactions within the [Ag(Hapa)(PPh3)]n layer. These two-dimensional layers are further assembled by weak van der Waals interactions to form the final architecture.
authors.affiliation: College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China.
authors.forename: Zu-Ping
authors.initials: ZP
authors.lastname: Xiao
authors.affiliation: College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China.
authors.forename: Meng
authors.initials: M
authors.lastname: Wen
authors.affiliation: College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China.
authors.forename: Chun-Ya
authors.initials: CY
authors.lastname: Wang
authors.affiliation: College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, People's Republic of China.
authors.forename: Xi-He
authors.initials: XH
authors.lastname: Huang
keywords: 4-aminophenylarsonic acid; crystal structure; hydrogen bonding; powder X-ray diffraction; silver coordination polymer; triphenylphosphane; two-dimensional (4,4)-network; π–π stacking