Poly[(µ(3)-quinoline-6-carboxyl-ato-κ(3)N:O:O')silver(I)].

In the title coordination polymer, [Ag(C(10)H(6)NO(2))](n), the Ag(I) cation is coordinated by two O atoms and one N atom from three 6-quinoline-carboxyl-ate anions in a distorted T-shaped AgNO(2) geometry, in which the O-Ag-O angle is 160.44 (9)°. The 6-quinoline-carboxyl-ate 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.

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].

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) Šindicates 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.

Tetra-kis[µ-1,4-bis-(4,5-dihydro-1,3-oxazol-2-yl)benzene-κN:N']tetra-kis-(µ-methano-lato-κO:O)bis-(µ-perchlorato-κO:O')tetra-copper(II) bis-(perchlorate).

The title tetra-nuclear Cu(II) complex, [Cu(4)(C(12)H(12)N(2)O(2))(4)(CH(3)O)(4)(ClO(4))(2)](ClO(4))(2), is located around an inversion center. Each Cu(II) atom is coordinated by two cis-O atoms from two bridging methano-late anions and two cis-N atoms from two bridging 1,4-bis-(4,5-dihydro-1,3-oxazol-2-yl)benzene (L) ligands in the basal plane, and is further coordinated by one O atom of the bridging perchlorate anion, forming a distorted square-pyramidal geometry. The Cu⋯Cu separations in the recta-ngular core are 2.9878 (11) and 6.974 (1) Å. In the asymmetric unit, there are two L ligands with a syn conformation. In one L ligand, the dihedral angles between the central benzene ring and the terminal 4,5-dihydro-1,3-oxazol-2-yl mean planes are 22.1 (4) and 33.1 (4)°, and in the other L ligand the corresponding dihedral angles are 29.3 (4) and 29.9 (4)°. The uncoordinated perchlorate anion is linked with the complex mol-ecules via weak C-H⋯O hydrogen bonds.