title: catena-Poly[[silver(I)-μ-1,2-bis-(4,4-dimethyl-4,5-dihydro-1,3-oxazol-2-yl)ethane-κ(2)N:N'] perchlorate hemihydrate].
abstract: In the title coordination polymer, {[Ag(C(12)H(20)N(2)O(2))]ClO(4)·0.5H(2)O}(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 mol-ecule 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 inter-action between the perchlorate anion and the Ag(I) cation. Weak C-H⋯O hydrogen bonding occurs between the chain and the lattice water mol-ecule 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.
authors.forename: Chun-Wei
authors.initials: CW
authors.lastname: Yeh
authors.forename: Fu-Chang
authors.initials: FC
authors.lastname: Huang
authors.forename: Shui-Chuan
authors.initials: SC
authors.lastname: Lin
authors.forename: Ay
authors.initials: A
authors.lastname: Jong
authors.forename: Maw-Cherng
authors.initials: MC
authors.lastname: Suen