Poly[(μ2‐1,3‐di‐4‐pyridylpropane‐κ2N:N′)(μ3‐glutarato‐κ3O:O′:O′′)dizinc(II)]

The title compound, [Zn₂(C₅H₆O₄)₂(C₁₃H₁₄N₂)]_n or [Zn₂(glu)₂(bpp)]_n, is a novel zinc polymer based on mixed flexible glutarate (glu) and 1,3‐di‐4‐pyridylpropane (bpp) ligands. The Zn^II center has a distorted tetra­hedral geometry and the central atom of the bpp ligand is located at a special site with a C₂ axis passing through it. A layer is formed by Zn–glu bonding. Such layers are pillared by bpp ligands, forming a three‐dimensional framework with large channels. The inverted inter­penetration of two three‐dimensional frameworks completes the mol­ecular structure.     

A fourfold interpenetrating diamondoid three‐dimensional coordination polymer: poly[[[μ2‐1,2‐bis(pyridin‐4‐yl)ethene‐κ2N:N′](μ2‐5‐hydroxyisophthalato‐κ2O1:O3)zinc(II)] 1,2‐bis(pyridin‐4‐yl)ethene hemisolvate]

In the title compound, {[Zn(C₈H₄O₅)(C₁₂H₁₀N₂)]·0.5C₁₂H₁₀N₂}_n or {[Zn(HO‐BDC)(bpe)]·0.5bpe}_n [HO‐H₂BDC is 5‐hydroxyisophthalic acid and bpe is 1,2‐bis(pyridin‐4‐yl)ethene], the asymmetric unit contains a Zn^II atom, one HO‐BDC ligand, one coordinated bpe ligand and half a noncoordinating bpe molecule with crystallographic inversion symmetry. Each Zn^II centre is four‐coordinated by two O atoms from two distinct HO‐BDC ligands and two N atoms from two different bpe ligands in a ZnO₂N₂ coordination environment. The three‐dimensional topology of the title compound corresponds to a fourfold interpenetrating diamondoid coordination polymer network, with the uncoordinated bpe ligands located in the cavities, hydrogen bonded to the main network via the hydroxy group of the HO‐H₂BDC ligand.     

Poly­[[[(1,10‐phenanthroline‐κ2N,N′)­zinc(II)]‐μ3‐5‐hydroxy­isophthalato‐κ4O,O′:O′′:O′′′] monohydrate]

In the title compound, {[Zn(C₈H₄O₅)(C₁₂H₈N₂)]·H₂O}_n or {[Zn(OH‐BDC)(phen)]·H₂O}_n (where OH‐H₂BDC is 5‐hydroxy­isophthalic acid and phen is 1,10‐phenanthroline), the Zn atoms are coordinated by two N atoms from the phen ligands and by four O atoms from hydroxy­isophthalate ligands in a highly distorted octahedral geometry, with Zn—O distances in the range 2.042 (4)–2.085 (5) Å and Zn—N distances of 2.133 (5) and 2.137 (5) Å. The {[Zn(OH‐BDC)(phen)]·H₂O}_n infinite zigzag polymer forms a helical chain of [Zn₂(OH‐BDC)₂]_n units. Face‐to‐face π–π interactions (3.60–3.75 Å) occur between two phen rings belonging to the same helical chain. Consolidation of the packing structure is achieved by O—H⋯O hydrogen‐bonding interactions between the carboxyl­ate O atoms, the hydroxyl group and the water mol­ecule, forming two‐dimensional sheets.     

catena‐Poly[[diaqua­bis(5‐carboxy­pentan­oato‐κO)cobalt(II)]‐μ‐1,2‐di‐4‐pyridylethane‐κ2N:N′]

The title compound, [Co(C₆H₉O₄)₂(C₁₂H₁₂N₂)(H₂O)₂]_n, crystallizes in the space group P. The Co atom is on a center of symmetry and the 1,2‐di‐4‐pyridylethane (bpe) ligand also sits across a crystallographic inversion center. The Co atom is octa­hedrally coordinated by two aqua ligands, two carboxyl­ate O atoms and two pyridyl N atoms, and is bridged by the anti‐bpe ligands to generate one‐dimensional {[Co(Hadip)₂(H₂O)₂](bpe)_2/2} chains (Hadip is 5‐carboxypentanoate), which are further inter­linked by O—H⋯O and C—H⋯O hydrogen bonds into two‐dimensional layers.     

catena‐Poly[[silver(I)‐μ‐[(E)‐1,2‐bis(2‐pyridyl)ethylene‐N:N′]] nitrate]

In the title complex, {[Ag(C₁₂H₁₀N₂)]NO₃}_n, the Ag atom, which is in a linear AgN₂ geometry, is surrounded by two trans‐related N atoms of two bpe ligands [Ag—N = 2.173 (3) and 2.176 (3) Å; bpe is trans‐1,2‐bis(2‐pyridyl)­ethyl­ene]. The bpe ligands bridge neighbouring Ag atoms to form zigzag polymeric chains in the lattice. These adjacent one‐dimensional zigzag chains are extended into a three‐dimensional supramolecular array by strong interchain π?π interactions between the pyridyl rings of adjacent chains.     

Poly­[manganese(II)‐μ2‐benzidine‐κ2N:N′‐μ3‐bi­phenyl‐2,2′‐di­carboxylato‐κ4O:O′,O′′:O′′′]

The title compound, [Mn(C₁₄H₈O₄)(C₁₂H₁₂N₂)]_n, with a novel three‐dimensional framework, has been prepared by a hydro­thermal reaction at 433 K. Each Mn atom lies on a twofold axis in a slightly distorted octahedral geometry, coordinated by two N atoms from two benzidine ligands and four O atoms from three symmetry‐related biphenyl‐2,2′‐dicarboxylate (bpdc) ligands. The benzidine ligands lie about inversion centres and the bpdc ligands about twofold axes. Each bpdc ligand is bonded to three Mn ions to form a continuous chain of metal ions. The bpdc ligands are accommodated in a series of distorted holes resembling hexagonal prisms.     

The infinite one‐dimensional chain polymer catena‐poly­[[bis­[μ‐1,1′‐ethane‐1,2‐diyl­bis(1,2,4‐triazole)‐κ2N4:N4′]­bis­[azido­zinc(II)]]‐di‐μ‐azido‐κ4N1:N1]

In the crystal structure of the title complex, [Zn(N₃)₂(C₆H₈N₆)]_n or [Zn(N₃)₂(bte)]_n, where bte is μ‐1,2‐bis(1,2,4‐triazol‐1‐yl)­ethane, each Zn atom is pentacoordinated in a distorted trigonal‐bipyramidal coordination environment involving two N atoms from two bte ligands and three N atoms from three azide ligands. The Zn atoms are bridged by μ‐1,1‐azide groups and bte ligands around a centre of inversion, forming an infinite one‐dimensional chain containing both four‐membered Zn(μ‐1,1‐N₃)₂Zn and 18‐membered Zn(gauche‐bte)₂Zn rings.     

catena‐Poly­[[(nitrato‐κ2O,O′)silver(I)]‐μ‐2,2′‐[1,4‐phenyl­enebis­(methyl­ene­thio)]­bis(5‐methyl‐1,3,4‐thia­diazo­le)‐κ2N3:N3′]

In the title complex, [Ag(NO₃)(C₁₄H₁₄N₄S₄)]_n, the Ag^I atom lies on a twofold axis and shows a distorted tetrahedral coordination, comprised of two N‐atom donors from two thia­diazole groups of separate ligands and two O‐atom donors from one nitrate ligand. Each bis­(thio­ether) ligand also lies on a twofold axis and bridges two adjacent Ag atoms to form an infinite chain along the c axis, with an Ag⋯Ag separation of 11.462 (4) Å. Adjacent one‐dimensional chains are further linked into double‐chain motifs through weak Ag⋯S and π–π stacking interactions.     

Poly[di‐μ‐aqua‐μ‐1,2‐bis(pyridin‐4‐yl)ethene‐κ2N:N′‐tetrakis(4‐iodobenzoato‐κ2O,O′)dicadmium]

Colourless crystals of the title compound, [Cd₂(C₇H₄IO₂)₄(C₁₂H₁₀N₂)(H₂O)₂]_n, were obtained by the self‐assembly of Cd(NO₃)₂·4H₂O, 1,2‐bis(pyridin‐4‐yl)ethene (bpe) and 4‐iodobenzoic acid (4‐IBA). Each Cd^II atom is seven‐coordinated in a pentagonal–bipyramidal coordination environment by four carboxylate O atoms from two different 4‐IBA ligands, two O atoms from two water molecules and one N atom from a bpe ligand. The Cd^II centres are bridged by the aqua molecules and bpe ligands, which lie across centres of inversion, to give a two‐dimensional net. Topologically, taking the Cd^II atoms as nodes and the μ‐aqua and μ‐bpe ligands as linkers, the two‐dimensional structure can be simplified as a (6,3) network.     

Poly[[μ2‐4,4′‐bipyridine‐di‐μ3‐sulfito‐dizinc(II)] monohydrate]

The title compound, {[Zn₂(SO₃)₂(C₁₀H₈N₂)]·H₂O}_n, is a two‐dimensional polymer built up of a [ZnSO₃]_n chain evolving around a 2₁ axis and inter­connected by a 4,4′‐bipyridine spacer. The resulting two‐dimensional structures are linked, in turn, by hydrogen bonding mediated by the solvent water mol­ecule. The organic ligand lies on a centre of symmetry located on the mid‐point of the bond between the rings, while the solvent water mol­ecule is halved by a twofold axis passing through the O atom.     

catena‐Poly[[diaquabis(2‐chloronicotinato‐κ2O,O′)cadmium(II)]‐μ‐2‐chloronicotinato‐κ3O,O′:N]

In the title neutral coordination polymer, [Cd(C₆H₃ClNO₂)₂(H₂O)₂]_n, each Cd^II ion is coordinated by one N and four O atoms from three 2‐chloro­nicotinate ligands and by two aqua ligands, defining a distorted monocapped octahedral coordination geometry. Adjacent Cd atoms are linked by the pyridyl N atom and the bidentate carboxyl­ate functional group of a 2‐­chloro­nicotinate ligand, forming a one‐dimensional infinite chain along the b axis. The Cd⋯Cd distance is 8.112 (3) Å. These chains are linked by O—H⋯O and O—H⋯N hydrogen bonds into a three‐dimensional network structure.     

catena‐Poly[[diiodo­zinc(II)]‐μ‐4,4′‐bipyridine‐κ2N:N′]

The title compound, [ZnI₂(bipy)]_n (bipy is 4,4′‐bipyridine, C₁₀H₈N₂), has been prepared by the hydro­thermal reaction of ZnI₂ and bipy at 433 K. Each Zn atom is coordinated by two N atoms from two different bipy ligands and by two I atoms in a distorted tetra­hedral geometry, with Zn—N distances ranging from 2.068 (7) to 2.101 (8) Å and Zn—I distances ranging from 2.5471 (13) to 2.5673 (13) Å. The mol­ecular structure features a zigzag polymeric chain. Face‐to‐face π–π stacking inter­actions between adjacent bipy ligands stabilize the structure.     

catena‐Poly[[μ‐hexa­nedioato‐1κO1:2κO6‐bis­[aqua­(5‐carboxy­penta­noato‐κO)copper(II)]]‐di‐μ‐4,4′‐bipyridine‐1κN:1′κN′;2κN:2′κN′]

In the title compound, [Cu₂(C₆H₈O₄)(C₆H₉O₄)₂(C₁₀H₈N₂)₂(H₂O)₂]_n, the square‐pyramidally coordinated Cu atoms are bridged by both 4,4‐bipyridine and adipate ligands into ladder‐­like chains, with exo‐orientated 5‐carboxypentan­oate ligands pendant from both side rails. Half of the adipate ligand is related to the other half by inversion symmetry. Inter­chain O—H⋯O hydrogen bonds from the aqua ligands to the carbonyl O atoms of the 5‐carboxy­penta­noate ligands are responsible for the formation of two‐dimensional grid‐like (4,4)‐networks, which complete a twofold inter­penetration.     

Two one‐dimensional zinc(II) coordination polymers: catena‐poly[[bis­(pentane‐2,4‐dionato‐κ2O,O′)zinc]‐μ‐1,4‐bis­(x‐pyrid­yl)‐2,3‐diaza­buta‐1,3‐diene] (x = 3, 4)

The structures of the two title isomeric compounds, [Zn(C₅H₇O₂)₂(C₁₂H₁₀N₄)]_n, are built up around two non‐equivalent symmetry centres, one of them at the cation position and the other bisecting the N—N bond in the 1,4‐bis­(3/4‐pyrid­yl)‐2,3‐diaza­buta‐1,3‐diene (3pdb/4pdb) units. Both Zn cations have the Zn atoms an inversion centres and present tetra­gonally distorted octa­hedral environments, but differences in their linkage through the 3pdb and 4pdb ligands give rise to differently shaped weakly inter­acting chains.     

catena‐Poly­[[[μ‐pyrazine‐κ2N:N′‐disilver(I)]‐di‐μ‐pyrazine‐κ4N:N′] bis­(tri­fluoro­methane­sulfonate) dihydrate]

The title compound, {[Ag₂(C₄H₄N₂)₃](CF₃SO₃)₂·2H₂O}_n, is a polymeric pyrazine–silver(I) complex. Each Ag^I ion is three‐coordinated by N atoms of three different pyrazine ligands, forming a T‐shaped coordination configuration. In the crystal structure, uncoordinated water mol­ecules are linked to tri­fluoro­methane­sulfonate anions through intermolecular O—H⋯O hydrogen bonds. There are weaker Ag⋯O interactions involving the water and sulfonate O atoms.     

A three‐dimensional ZnII coordination framework: poly[[μ2‐(E)‐1,2‐bis(pyridin‐4‐yl)ethene][μ4‐(E)‐2,2′‐(diazene‐1,2‐diyl)dibenzoato][μ2‐(E)‐2,2′‐(diazene‐1,2‐diyl)dibenzoato]dizinc(II)]

In the title coordination polymer, [Zn₂(C₁₄H₈N₂O₄)₂(C₁₂H₁₀N₂)]_n, the asymmetric unit contains one Zn^II cation, two halves of 2,2′‐(diazene‐1,2‐diyl)dibenzoate anions (denoted L²⁻) and half of a 1,2‐bis(pyridin‐4‐yl)ethene ligand (denoted bpe). The three ligands lie across crystallographic inversion centres. Each Zn^II centre is four‐coordinated by three O atoms of bridging carboxylate groups from three L²⁻ ligands and by one N atom from a bpe ligand, forming a tetrahedral coordination geometry. Two Zn^II atoms are bridged by two carboxylate groups of L²⁻ ligands, generating a [Zn₂(CO₂)₂] ring. Each loop serves as a fourfold node, which links its four equivalent nodes via the sharing of four L²⁻ ligands to form a two‐dimensional [Zn₂L₄]_n net. These nets are separated by bpe ligands acting as spacers, producing a three‐dimensional framework with a 4⁶6⁴ topology. Powder X‐ray diffraction and solid‐state photoluminescence were also measured.     

catena‐Poly­[[(benzoato‐κO)silver(I)]‐μ‐2‐amino­pyrimidine‐κ2N1:N3]

The title complex, [Ag(C₇H₅O₂)(C₄H₅N₃)]_n, is a polymer based on a mononuclear silver(I)‐centered fragment. The Ag^I atom is trigonally coordinated by two N atoms from two 2‐­amino­pyrimidine ligands and one O atom from one benzoate anion, giving zigzag polymeric chains with an [–Ag—N—C—N–]_n backbone running along the a axis. It is proposed that intermolecular hydrogen bonding drives the formation of the chain polymer.     

Low‐dimensional compounds containing cyano groups. II. catena‐Poly[[(2,2′‐bipyridine‐κ2N:N′)(dicyanamido‐κN)copper(II)]‐μ‐dicyanamido‐κ2N:N′]

The crystal structure of the title compound, [Cu(C₂N₃)₂(C₁₀H₈N₂)]_n, is formed by neutral zigzag chains of the [–NC–N–CN–Cu{(bpy)N(CN)₂}–NC–N–CN–] type run­ning along the c axis (bpy is 2,2′‐bi­pyridine). The Cu atoms in the chains are pentacoordinated in the form of a distorted tetragonal pyramid, with a CuN₅ chromophore. The coordination sites are occupied by two N atoms of one bpy mol­ecule in the basal plane [Cu—N 2.018 (4) and 2.025 (2) Å] and by three terminal N atoms of two dicyan­amide ligands. One of the dicyan­amide ligands is coordinated in a monodentate fashion through a nitrile N atom in the basal plane [Cu—N 1.963 (4) Å]. The second acts as an end‐to‐end bridging ligand to a neighbouring Cu atom and is coordinated by one nitrile N atom in the basal plane [Cu—N 2.001 (2) Å], while the second nitrile N atom occupies the apical position [Cu—N 2.159 (2) Å] and originates from the bridge connecting another Cu atom. The shortest intrachain Cu?Cu distance is 8.212 (1) Å, as a consequence of the large bridging ligand, whereas the minimum interchain distance between Cu atoms is only 5.77 (7) Å, because of the interdigitation of the chains.     

Poly[μ3‐hydroxido‐μ6‐sulfato‐μ3‐(1,2,4‐triazolato‐κ3N1:N2:N4)‐dicadmium(II)]: a cadmium–triazolate coordination polymer with a pseudo‐cubane‐like tetranuclear cluster

The title complex, [Cd₂(C₂H₂N₃)(OH)(SO₄)]_n, is a three‐dimensional metal–organic framework consisting of pseudo‐cubane‐like tetranuclear cadmium clusters, which are formed by four Cd^II atoms, two sulfate groups and two hydroxide groups. The tetranuclear cadmium clusters are connected into a layered substructure by Cd—O bonds and adjacent layers are linked by triazolate ligands into a three‐dimensional network. A photoluminescent study revealed that the complex exhibits a strong emission in the visible region which probably originates from a π–π* transition.     

catena‐Poly­[[bis(pentane‐2,4‐dionato‐κ2O,O′)­cobalt(II)]‐μ‐4,4′‐methylene­dianiline‐κ2N:N′]

In the title compound, [Co(C₅H₇O₂)₂(C₁₃H₁₄N₂)]_n or [Co(acac)₂(dadpm)]_n, where acac is acetyl­acetonate and dadpm is 4,4′‐methylenedianiline, the Co atom is on a centre of symmetry and is octahedrally coordinated by four O atoms from two acac anions and by two N atoms from two dadpm ligands. Each dadpm ligand, which has a twofold axis passing through its methyl­ene C atom, bridges two Co atoms to form a spiral polymeric chain. Neighbouring chains connect via hydrogen bonds to form a two‐dimensional network.