Poly[[aqua-tris-(µ-benzene-1,4-dicarboxyl-ato)tricobalt(II)] methanol monosolvate monohydrate].

The asymmetric unit of the title compound, {[Co(3)(C(8)H(4)O(4))(3)(H(2)O)]·CH(3)OH·H(2)O}(n), consists of four crystallographically independent Co cations, four benzene-1,4-dicarboxyl-ate (bdc) anions, two water and one methanol solvent mol-ecule. Two of the Co cations and two of the bdc anions are located on centres of inversion, whereas all other atoms are located in general positions. In the crystal, two Co atoms are only fourfold coordinated by three O atoms from three bdc ligands and by one O atom from one coordinated water mol-ecule, while a third Co atom is coordinated by four O atoms from four bdc ligands within a strongly distorted tetra-hedral geometry. The other two Co cations are octa-hedrally coordinated by six O atoms from six bdc anions. The Co cations are linked by the bdc anions into a three-dimensional framework. From this arrangement, cavities are formed in which additional methanol and water mol-ecules are embedded.

Poly[[hexa-kis-(µ-benzene-1,4-dicarboxyl-ato)octa-kis-(N,N-dimethyl-acetamide)-hexa-manganese(II)] monohydrate].

In the title compound, {[Mn(6)(C(8)H(4)O(4))(6)(C(4)H(9)NO)(8)]·H(2)O}(n), two of the Mn atoms are six-coordinated by six O atoms from three benzene-1,4-dicarboxyl-ate (bdc) ligands and two trans DMA (dimethyl-acetamide) mol-ecules, whereas two other Mn atoms, located on inversion centers, are both in octa-hedral coordinations by six bdc O atoms. The discrete trinuclear manganese secondary building units (SBU) of Mn(3)(O(2)CR)(6) ({-Mn-Mn-Mn-}) are linked through bdc ligands, forming a chain, while the discrete trinuclear SBU of {-Mn-Mn-Mn-} are bridged, forming another chain]. The two types of chains are linked through bdc ligands, resulting in the formation of a layer with 3(6) topology. Weak O-H⋯O and O-H⋯N hydrogen-bonding inter-actions involving the disordered water molecule (half-occupation) extend the two-dimensional layers into a three-dimensional supra-molecular framework.

Poly[[(µ(2)-benzene-1,4-dicarboxyl-ato-κO,O:O,O)(µ(2)-di-4-pyridyldiazene-κN:N)cobalt(II)] N,N-dimethyl-formamide disolvate hemihydrate].

In the title compound, {[Co(C(8)H(4)O(4))(C(10)H(8)N(4))]·2C(3)H(7)NO·0.5H(2)O}(n), the Co(II) atom is six-coordinated by four O atoms from two benzene-1,4-dicarboxyl-ate (H(2)bdc(2-)) groups and two N atoms from two 4,4'-azopyridine (4,4'-azpy, or di-4-pyridyldiazene) ligands, leading to a distorted octa-hedral geometry. The structure consists of two-dimensional corrugated sheets with a 4(4) topology in an …ABAB… packing pattern stacking along the a axis. The separation of the adjacent corrugated sheets is ca. 8.561 (2)  Š(Co⋯Co distance) along the a axis. The uncoordinated water molecule is half-occupied. The crystal structure is stabilized by O-H⋯N and C-H⋯O hydrogen-bonding inter-actions.

Tris[tris-(ethane-1,2-diamine)cobalt(II)] bis-[octa-cyanidomolybdate(V)] dihydrate.

In the title compound, [Co(II)(C(2)H(8)N(2))(3)](3)[Mo(V)(CN)(8)](2)·2H(2)O, N-H⋯N and N-H⋯O hydrogen-bonding inter-actions give rise to a three-dimensional network. In the crystal structure, each Mo polyhedron has a square-anti-prismatic shape, while the Co complexes show distorted octa-hedral geometry with an occupancy of 50%. One of the Co atoms resides on a crystallographic inversion centre.