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

In the title coordination polymer, {[Ag(C₁₂H₂₀N₂O₂)]ClO₄·0.5H₂O}_n, the Ag^I 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 Ag^I 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.

Poly[(μ₃-quinoline-6-carboxyl­ato-κ³N:O:O′)silver(I)]

In the title coordination polymer, [Ag(C₁₀H₆NO₂)]_n, the Ag^I cation is coordinated by two O atoms and one N atom from three 6-quinoline­carboxyl­ate anions in a distorted T-shaped AgNO₂ geometry, in which the O—Ag—O angle is 160.44 (9)°. The 6-quinoline­carboxyl­ate anion bridges three Ag⁺ cations, forming a nearly planar polymeric sheet parallel to (101). The distance between Ag⁺ cations bridged by the carboxyl group is 2.9200 (5) Å. In the crystal, π–π stacking is observed between parallel quinoline ring systems, the centroid–centroid distance being 3.7735 (16) Å.