Poly[bis-(µ(4)-acetato-κO:O:O':O')bis-(µ(3)-acetato-κO:O:O)(µ(2)-acetato-κO:O')(µ(2)-acetic acid-κO:O')di-µ-aqua-copper(II)tris-odium].

In the title compound, [CuNa(3)(CH(3)CO(2))(5)(CH(3)COOH)(H(2)O)(2)](n), the Cu(II) atom lies on an inversion center and is coordinated by four O atoms from four acetate ligands, leading to a square-planar geometry. One Na(I) atom, lying on an inversion center, is coordinated by four O atoms from four acetate ligands and two bridging water mol-ecules in a distorted octa-hedral geometry. The other Na(I) atom is coordinated by five O atoms from five acetate ligands and a bridging water mol-ecule. A hy-droxy H atom lies on a twofold rotation axis and is shared by two acetate ligands. The crystal packing exhibits a polymeric layer parallel to (100), which is further stablized by intra-layer O-H⋯O hydrogen bonds. The layers are linked by inter-layer O-H⋯O hydrogen bonds.

1-Dec-yloxy-4-nitro-benzene.

The title compound, C(16)H(25)NO(3), has a zigzag dec-yloxy chain para to the nitro group of the aromatic ring. There are two independent mol-ecules; the two rings are aligned at 48.15 (7)°. In the crystal, weak C-H⋯O hydrogen bonds lead to the formation of infinite chains.

1-Dodec-yloxy-4-nitro-benzene.

The asymmetric unit of the title compound, C(18)H(29)NO(3), contains two independent mol-ecules. The benzene ring and the mean plane of the alkyl unit form dihedral angles of 83.69 (12) and 77.14 (11)° in the two mol-ecules. In the crystal structure, weak C-H⋯O hydrogen bonds link mol-ecules into double-layer ribbons extending in [110].