catena-Poly[[triaquacopper(II)]-μ₂-furan-2,5-dicarboxyl­ato-κ⁴O¹,O²:O²,O^2′]

In the title compound, [Cu(C₆H₂O₅)(H₂O)₃]_n, an infinite chain is formed along [001] by linking of the Cu(OH₂)₃O₄ cluster with one carboxyl­ate group of the furan-2,5-dicarboxyl­ate ligand. Adjacent chains are linked by O_water—H...O hydrogen-bonding inter­actions. The Cu(OH₂)₃O₄ cluster displays a penta­gonal bipyrimadal geometry with two weak coordinations [Cu—O_furan = 2.790 (2) Å) and Cu—O_{carboxyl­ate} = 2.684 (2) Å] and two water mol­ecules located in axial positions.

catena-Poly[(triaqua­zinc)-μ-furan-2,5-dicarboxyl­ato-κ³O²:O²,O^2′]

In the crystal structure of the title compound, [Zn(C₆H₂O₅)(H₂O)₃]_n, an infinite chain is formed along [001] by linking of the Zn(H₂O)₃ entities with one carboxyl­ate group of the furan-2,5-dicarboxyl­ate ligand. Adjacent chains are linked by O_water—H...O hydrogen-bonding inter­actions. The Zn(H₂O)₃O₃ polyhedron displays a distorted octa­hedral geometry with one weak Zn—O_{carboxyl­ate} coordination [2.433 (8) A°] and two water mol­ecules located in axial positions. Except for one of the axial water molecules and two adjacent H atoms, the other atoms (including H atoms) possess site symmetry m.

catena-Poly[(aqua­dimethano­lzinc)-μ-furan-2,5-dicarboxyl­ato-κ³O²:O²,O^2′]

In the crystal structure of the title compound, [Zn(C₆H₂O₅)(CH₃OH)₂(H₂O)]_n, an infinite chain is formed along the b axis by linking of the Zn(OH₂)(CH₃OH)₂ unit with one carboxyl­ate group of the furan-2,5-dicarboxyl­ate ligand. The Zn^II ion is in a distorted octa­hedral environment with one weak coordination [Zn—O_{carboxyl­ate} = 2.565 (3) Å] and two meth­anol mol­ecules located in axial positions. In the chain, O_water—H...O hydrogen bonds are present, while adjacent chains are linked by O_methanol—H...O hydrogen bonds into a layer parallel to (10-2).

catena-Poly[[[aqua­bis­(1H-imidazole-κN³)copper(II)]-μ-furan-2,5-di­car­boxylato-κ²O²:O⁵] trihydrate]

In the title cooridnation polymer, {[Cu(C₆H₂O₅)(C₃H₄N₂)₂(H₂O)]·3H₂O}_n, an infinite chain is formed along [001] by linking of the Cu(C₃N₂H₄)₂(H₂O) entities with two bridging monodentate carboxyl­ate groups of two different furan-2,5-dicarboxyl­ate dianions. The geometry of the Cu²⁺ ion is a square-based pyramid with the water atom in the apical position and the ligand O and N atoms in a trans orientation. The dihedral angle between the imidazole planes is 83.96 (14)°. O_w–H...O and N_i–H...O (w = water and i = imidazole) hydrogen bonds help to establish the packing.

catena-Poly[[(1,10-phenanthroline-κ²N,N′)zinc]-μ-furan-2,5-dicarboxyl­ato-κ⁴O²,O^2′:O⁵,O^5′]

In the title coordination polymer, [Zn(C₆H₂O₅)(C₁₂H₈N₂)]_n, an infinite chain is formed along [010] by linking the chelated {Zn(phen)} entities (phen is 1,10-phenanthroline) with two carboxyl­ate groups of the furan-2,5-dicarboxyl­ate ligand. The Zn^II atom shows trigonal–prismatic coordination.

catena-Poly[[(1,3-dimethyl­imidazolin-2-one-κN)(1,10-phenanthroline-κ²N,N′)copper(II)]-μ-furan-2,5-dicarboxyl­ato-κ²O²:O⁵]

The polymeric title compound, [Cu(C₆H₂O₅)(C₁₂H₈N₂)(C₅H₁₀N₂O)]_n, is composed of an infinite chain formed along [100] by linking the (1,3-dimethyl­imidazolin-2-one)(1,10-phenanthroline)copper(II) units with two O atoms of two carboxyl­ate groups of the furan-2,5-dicarboxyl­ate ligand. The Cu^II atom, which lies on a twofold rotation axis, displays a square-pyramidal coordination. The dihedral angles of the 1,10-phenanthroline ligand with respect to the furan rings of the carboxyl­ate anions that are connected to the metal atom are 62.18 (11) and 88.27 (12)°.

catena-Poly[[[aqua­(2,2′-bipyridine-κ²N,N′)copper(II)]-μ-furan-2,5-di­carboxyl­ato-κ²O²:O⁵] dihydrate]

In the crystal structure of the title compound, {[Cu(C₆H₂O₅)(C₁₀H₈N₂)(H₂O)]·2H₂O}_n, an infinite chain parallel to [110] is formed by the linking of Cu(H₂O)(2,2′-bipyridine) units through a furan-2,5-dicarboxyl­ate bridge. The Cu^II atom shows a square-pyramidal geometry, with one furan-2,5-dicarboxyl­ate O atom in the apical position. The dihedral angle between the planes of the furan ring and the bipyridine mol­ecule is 83.88 (7)°. O_water—H...O hydrogen bonds connect adjacent chains, generating a layer motif parallel to (001).

catena-Poly[[[aqua­(2,2′-bipyridine-κ²N,N′)zinc]-μ-furan-2,5-dicarboxyl­ato-κ²O²:O⁵] dihydrate]

In the title hydrated coordination polymer, {[Zn(C₆H₂O₅)(C₁₀H₈N₂)(H₂O)]·2H₂O}_n, an infinite [1-10] chain is formed by the linking of [Zn(C₁₀H₈N₂)(H₂O)]²⁺ entities by bridging, monodentate furan-2,5-dicarboxyl­ate dianionic linkers. The Zn²⁺ coordination geometry is a trigonal bipyramid, with one N atom (from 2,2′-bipyridine) and one O atom (from the bridging dianion) in the axial positions. For each Zn^II atom, the dihedral angle between the furan ring of its coordinated bridging ligand and its coordinated bipyridine ring system is 87.19 (8)°. O—H...O hydrogen bonds involving both the coordinated and uncoordinated water mol­ecules generate a layer motif parallel to (001).

Poly[[μ-aqua-diaqua­bis­(μ-furan-2,5-dicarboxyl­ato-κ²O²:O⁵)bis­(1,10-phenanthroline-κ²N,N′)dicopper(II)] N,N-dimethyl­formamide monosolvate]

The asymmetric unit of the title compound, {[Cu₂(C₆H₂O₅)₂(C₁₂H₈N₂)₂(H₂O)₃]·C₃H₇NO}_n, contains two Cu^II atoms, two furan-2,5-dicarboxyl­ate (L) ligands, two 1,10-phenanthroline (phen) ligands, three coordinating water mol­ecules and one N,N-dimethyl­formamide solvent mol­ecule. Each Cu^II atom is coordinated by two N atoms from one phen ligand, two O atoms from two L ligands and two water mol­ecules in a distorted octa­hedral geometry. The main difference between the environments of the two independent Cu atoms is in the Cu—O_water distances, which are 2.415 (2) and 2.639 (2) Å for one Cu^II atom and 2.3560 (19) and 2.911 (4) Å for the other. Ligands L and one independent water mol­ecule bridge the Cu^II atoms, forming corrugated polymeric layers parallel to the ab plane. Inter­molecular O—H...O and C—H...O hydrogen bonds consolidate the crystal packing.