catena-Poly[[silver(I)-μ-1,2-bis(4,4-dimethyl-4,5-dihydro-1,3-oxazol-2-yl)ethane-κ2N:N′] perchlorate hemihydrate]

Abstract

In the title coordination polymer, {[Ag(C12H20N2O2)]ClO4·0.5H2O}n, the AgI cation is coordinated by two N atoms from two 1,2-bis(4,4-dimethyl-4,5-dihydro-1,3-oxazol-2-yl)ethane (L) ligands in a nearly linear geometry [N—Ag—N = 171.07 (8)°]. The L ligand bridges adjacent Ag+ cations, forming a polymeric chain running along the c axis. The lattice water molecule is situated on a twofold rotation axis, and links to the perchlorate anion via an O—H...O hydrogen bond. The long Ag...O separation of 3.200 (4) Å indicates a weak interaction between the perchlorate anion and the AgI cation. Weak C—H...O hydrogen bonding occurs between the chain and the lattice water molecule and between the chain and perchlorate anions. Both five-membered rings of the L ligand display envelope conformations; in one five-membered ring, the flap C atom is disordered on opposite sides of the ring with occupancies of 0.65 and 0.35.