5-Meth­oxy-1,3,4-thia­diazol-2(3H)-one

The three mol­ecules in the asymmetric unit of the title compound, C₃H₄N₂O₂S, are connected via N—H...O hydrogen bonds, forming layers normal to [001]. The rings of the mol­ecules are approximately planar, with r.m.s. deviations of 0.0051 (1), 0.0044 (1) and 0.0111 (1) Å.

4-Meth­oxy-N-methyl­benzamide

In the title compound, C₉H₁₁NO₂, the dihedral angle between the amide group and the benzene ring is 10.6 (1)°. In the crystal, mol­ecules are connected via N—H...O hydrogen bonds, supported by a C—H...O contact, forming chains along b. These chains are linked by C—H...π inter­actions to give a three-dimensional network.

4-Chloro-N-methyl­benzamide

There are two mol­ecules in the asymmetric unit of the title compound, C₈H₈ClNO, which are linked in the crystal structure via N—H...O hydrogen bonds into chains along the b axis. C—H...O contacts also occur. The benzene ring makes dihedral angles of 5.9 (1) and 16.7 (1)°with the attached amide group in the two independent molecules.

5-Bromo-4-iodo-2-methyl­aniline

The asymmetric unit of the title compound, C₇H₇BrIN, contains two independent mol­ecules, which are linked by weak N—H...N hydro­den-bonding inter­actions between the amino groups.

Poly[aqua­[μ-1,2-bis­(pyridin-4-yl)ethene-κ²N:N′][μ-5-(diphenyl­phosphino­yl)iso­phthalato-κ³O¹,O^1′:O³]nickel(II)]

In the title compound, [Ni(C₂₀H₁₃O₅P)(C₁₂H₁₀N₂)(H₂O)]_n, the Ni^II cation is coordinated by three O atoms from two 5-(diphenyl­phosphino­yl)isophthalate anions, two N atoms from two 1,2-bis­(pyridin-4-yl)ethene ligands and one water mol­ecule in a distorted octa­hedral geometry. Both 1,2-bis­(pyridin-4-yl)ethene and 5-(diphenyl­phosphino­yl)iso­phthal­ate bridge the Ni^II cations to form polymeric layers parallel to (001). In the crystal, O—H...O hydrogen bonding links layers into a three-dimensional supra­molecular structure.