catena‐Poly[[[aqua(ethylenediamine‐κ2N,N′)(nitrato‐κO)copper(II)]‐μ‐4,4′‐dithiodipyridine‐κ2N:N′] nitrate monohydrate]

The title compound, {[Cu(NO₃)(C₂H₄N₂)(C₁₀H₈N₂S₂)(H₂O)]NO₃·H₂O}_n, is composed of a one‐dimensional linear coordination polymer involving cis‐protected copper(II) ions and a 4,4′‐dithiodipyridine bridging ligand. The polymeric chains run along the c‐axis direction. N—H...O and O—H...O hydrogen bonds involving the coordinating amine groups, nitrate ions and water molecules, as well as cocrystallized noncoordinating nitrate ions and water molecules, generate a three‐dimensional structure.     

catena‐Poly[[copper(II)‐μ‐2‐[bis­(2‐pyridylmeth­yl)amino]butyrato‐κ4N,N′,N′′,O:κO′] perchlorate]

The copper(II) ion in the syn–anti carboxyl­ate‐bridged one‐dimensional zigzag chain title complex, {[Cu(C₁₆H₁₈N₃O₂)]ClO₄}_n, exhibits a distorted trigonal–bipyramidal environment. Two N atoms and one carboxyl­ate O atom of the ligand form the basal plane, while the axial positions are filled by an N atom of the ligand and one O atom belonging to the carboxyl­ate group of an adjacent mol­ecule. The crystal packing is enhanced by C—H⋯O(perchlorate) hydrogen bonds.     

A novel helical copper complex: catena‐poly[[[aquacopper(II)]‐μ‐N‐(3‐carboxy‐2‐oxidobenzylidene‐κO2)glycinato‐κ3N,O′:O′] monohydrate]

In the polymeric title compound, {[Cu(C₁₀H₇NO₅)(H₂O)]·H₂O}_n, the Cu atom adopts a square‐based pyramidal coordination involving a N,O,O′‐tridentate glycine dianionic ligand, a water O atom and an apical bridging carboxylate O atom from an adjacent ligand. The title compound also adopts a carboxylate‐bridged chain structure. The molecular chain propagates in a helical fashion along the b axis of the monoclinic unit cell. Neighbouring chains are linked together to form a three‐dimensional network via hydrogen‐bonding interactions between coordinated and uncoordinated water molecules and O atoms of the bridging carboxylate groups.     

catena‐Poly[[[triaquazinc(II)]‐μ‐2‐nitroterephthalato‐κO1:κ2O4,O4′] monohydrate]

The title complex, {[Zn(C₈H₃NO₆)(H₂O)₃]·H₂O}_n, has a one‐dimensional chain structure. The two carboxylate groups of the dianionic 2‐nitroterephthalate ligand adopt mono‐ and bidentate chelating modes. The Zn atom shows distorted octahedral coordination, bonded to three O atoms from two carboxylate groups and three O atoms of three non‐equivalent coordinated water molecules. The one‐dimensional chains are aggregated into two‐dimensional layers through inter‐chain hydrogen bonding. The whole three‐dimensional structure is further stabilized by inter‐layer hydrogen bonds.     

catena‐Poly[[[aqua[3‐(2‐pyridylsulfanyl)propionato N‐oxide‐κO1]copper(II)]‐μ‐[3‐(2‐pyridylsulfanyl)propionato N‐oxide‐κ3O3:O1,O1′] dihydrate]

In the title complex, {[Cu(C₈H₈NO₃S)₂(H₂O)]·2H₂O}_n, the Cu^II cation has a distorted square‐pyramidal coordination environment consisting of five O atoms, one from a water molecule, one from an N—O group and the other three from the carboxylate groups of two 3‐(2‐pyridylsulfanyl)propionate N‐oxide anions. The aqua[3‐(2‐pyridylsulfanyl)propionato N‐oxide]copper(II) moieties are bridged by 3‐(2‐pyridylsulfanyl)propionate N‐oxide anions to form an infinite three‐dimensional coordination polymer with a zigzag chain structure. The crystal structure is stabilized by hydrogen bonds.     

catena‐Poly[[(2,2′‐biimidazole‐κ2N,N′)chloro­copper(II)]‐μ‐chloro]

In the polymeric title compound, [CuCl₂(C₆H₆N₄)]_n, each Cu^II ion is five‐coordinated by four basal atoms (two N atoms from a 2,2′‐biimidazole mol­ecule and two Cl⁻ anions) and one axial Cl⁻ anion, in a distorted square‐pyramidal coordination geometry. Cl⁻ anions bridge the {Cu(C₆H₆N₄)Cl} units into one‐dimensional linear chains, which are reinforced by π–π inter­actions. Adjacent linear chains are linked by N—H⋯Cl hydrogen bonds, resulting in a grid layer. The hydrogen‐bonding pattern can be described in graph‐set notation as C(9)R(9)R(14). This study extends our knowledge of the multifunctional properties of the 2,2′‐biimidazole ligand and of the coordination stereochemistry of copper(II).     

{μ‐N,N′‐Bis[2‐(dimethylamino)ethyl]oxamidato(2–)‐κ6N,N′,O′:N′′,N′′′,O}bis[(2,2′‐bipyridine‐κ2N,N′)copper(II)] bis(perchlorate)

In the crystal structure of the title complex, [Cu₂(C₁₀H₂₀N₄O₂)(C₁₀H₈N₂)₂](ClO₄)₂, the deprotonated dmaeoxd²⁻ ligand {H₂dmaeoxd is N,N′‐bis[2‐(dimethylamino)ethyl]oxamide} occupies an inversion centre at the mid‐point of the central C—C bond and is thus in a trans conformation. The two Cu^II atoms are located in slightly distorted square‐based pyramidal environments. The binuclear units interact with each other viaπ–π interactions to form a one‐dimensional chain extending in the c direction.     

Poly[[[aqua­(2,2′‐bipyridine‐κ2N,N′)manganese(II)]‐μ3‐acetyl­enedicarboxylato‐κ3O:O′:O′′] monohydrate]

In the title complex, {[Mn(C₄O₄)(C₁₀H₈N₂)(H₂O)]·H₂O}_n, each Mn^II ion has a distorted octa­hedral coordination formed by two N atoms of a 2,2′‐bipyridine ligand, three carboxyl O atoms of three different acetyl­ene­dicarboxyl­ate ligands and one coordinated water mol­ecule. The acetyl­ene­dicarboxyl­ate ligands act in a tridentate mode connecting adjacent Mn^II ions and constructing a two‐dimensional structure which can be regarded as an unusual plywood‐like stacked network.     

catena‐Poly[[(1,10‐phenanthroline‐κ2N,N′)copper(II)]‐μ‐(dihydrogen benzene‐1,2,4,5‐tetracarboxylato)‐κ2O1:O4]

In the title compound, [Cu(C₁₀H₄O₈)(C₁₂H₈N₂)]_n, the Cu^II cation has a four‐coordination environment completed by two N atoms from one 1,10‐phenanthroline (phen) ligand and two O atoms belonging to two di­hydrogen benzene‐1,2,4,5‐­tetra­carboxyl­ate anions (H₂TCB²⁻). There is a twofold axis passing through the Cu^II cation and the centre of the phen ligand. The [Cu(phen)]²⁺ moieties are bridged by H₂TCB²⁻ anions to form an infinite one‐dimensional coordination polymer with a zigzag chain structure along the c axis. A double‐chain structure is formed by hydrogen bonds between adjacent zigzag chains. Furthermore, there are π–π stacking inter­actions between the phen ligands, with an average distance of 3.64 Å, resulting in a two‐dimensional network structure.     

catena‐Poly­[[chloro(1,10‐phenanthroline‐κ2N,N′)copper(II)]‐μ‐imidazolato‐κ2N:N′]

In the polymeric title compound, [Cu(im)Cl(phen)]_n, where im is the imidazolate anion (C₃H₃N₂) and phen is 1,10‐phenanthroline (C₁₂H₈N₂), each Cu^II ion is five‐coordinated by four basal N atoms (two from two different im anions and two from one phen ligand) and one axial Cl atom, in a distorted square‐pyramidal coordination geometry. Moreover, each im anion bridges two identical {CuCl(phen)}⁺ cations through its two N atoms, resulting in a one‐dimensional zigzag chain along the crystallographic a axis. In addition, pairs of adjacent chains are staggered by π–π interactions, generating a two‐dimensional layer, and neighbouring layers are further linked by two different kinds of C—H⋯Cl interactions, producing a three‐dimensional network.     

catena‐Poly[[[tetrakis(1‐methylimidazole‐κN3)copper(II)]‐μ2‐sulfato‐κ2O:O′] acetonitrile hemisolvate sesquihydrate]

The title compound, [Cu(C₄H₈N₂)₄]SO₄·0.5CH₃CN·1.5H₂O, consists of a double chain wherein the Cu centres are octahedrally coordinated by four 1‐methyl­imidazole ligands in the equatorial plane and by two axial sulfate ions which act as bridges between the Cu centres. The Cu—N bond lengths lie between 1.9929 (14) and 2.0226 (14) Å, but the Cu—O bond distances are longer, with values between 2.3496 (13) and 2.8276 (14) Å. The water mol­ecules participate in the formation of a network of hydrogen bonds of significance in maintaining the connectivity of the structure.     

catena‐Poly[[[diaqua­bis(pyridine‐4‐carboxamide‐κN)copper(II)]‐μ2‐squarato‐κO1:O3] dihydrate]

The asymmetric unit of the title compound, {[Cu(C₄O₄)(C₆H₆N₂O)₂(H₂O)₂]·2H₂O}_n, consists of one pyridine‐4‐carbox­amide (isonicotinamide or ina) ligand, one‐half of a squarate dianion, a coordinated aqua ligand and a solvent water mol­ecule. Both the Cu^II and the squarate ions are located on inversion centers. The Cu^II ions are octa­hedrally surrounded by four O atoms of two water mol­ecules and two squarate anions, and by two N atoms of the isonicotinamide ligands. The crystal structure contains chains of squarate‐1,3‐bridged Cu^II ions. These chains are held together by N—H⋯O and O—H⋯O inter­molecular hydrogen‐bond inter­actions, forming an extensive three‐dimensional network.     

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[[[tetrakis(μ‐acetato‐κ2O:O′)dirhodium(II)]‐μ‐[1,3‐bis(dimethylamino)propan‐2‐ol‐κ2N:N′]] tetrahydrofuran hemisolvate]

In the structure of the title compound, {[Rh₂(C₂H₃O₂)₄(C₇H₁₈N₂O)]·0.5C₄H₈O}_n or {[Rh₂(O₂CMe)₄(Hbdmap)]·0.5C₄H₈O}_n, where Hbdmap is 1,3‐bis­(dimethyl­amino)propan‐2‐ol, each Hbdmap ligand is coordinated to two [Rh₂(O₂CMe)₄] units by two N atoms, resulting in a polymeric chain structure. The observed coordination mode of the Hbdmap mol­ecule is unprecedented.     

(Aqua‐2κO)bis(2,2′‐bipyridine‐1κ2N,N′){μ‐N‐[3‐(dimethylamino)propyl]‐N′‐(2‐oxidophenyl)oxamidato(3−)‐1:2κ2O,O′:κ4O′′,N,N′,N′′}copper(II)nickel(II) perchlorate

The title complex, [CuNi(C₁₃H₁₆N₃O₃)(C₁₀H₈N₂)₂(H₂O)]ClO₄, has a cis‐oxamide‐bridged heterobinuclear cation, with a Cu...Ni separation of 5.3297 (6) Å, counterbalanced by a disordered perchlorate anion. The Cu^II and Ni^II cations are located in square‐pyramidal and octahedral coordination environments, respectively. The complex molecules are assembled into a three‐dimensional supramolecular structure through hydrogen bonds and π–π stacking interactions. The influence of the two types of metal cation on the supramolecular structure is discussed.     

{μ‐N,N′‐Bis[3‐(dimethyl­amino)prop­yl]­oxamidato(2–)‐κ6N,N′,O′:N′′,N′′′,O}­bis­[(1H‐imidazole‐κN3)(methanol‐κO)copper(II)] bis­(perchlorate)

The structure of the title compound, [Cu₂(C₁₂H₂₄N₄O₂)(C₃H₄N₂)₂(CH₄O)₂](ClO₄)₂ or [Cu₂(dmoxpn)(HIm)₂(CH₃OH)₂](ClO₄)₂, where dmoxpn is the dianion of N,N′‐bis­[3‐(dimethyl­amino)prop­yl]oxamide and HIm is imidazole, consists of a centrosymmetric trans‐oxamidate‐bridged copper(II) binuclear cation, having an inversion centre at the mid‐point of the central C—C bond, and two perchlorate anions. The Cu^II atom has square‐pyramidal coordination geometry involving two N atoms and an O atom from the dmoxpn ligand, an N atom from an imidazole ring, and an O atom from a methanol mol­ecule. The crystal structure is stabilized by O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds and imidazole π–π stacking inter­actions to form a three‐dimensional supra­molecular array.     

catena‐Poly[tris(ethylenediamine‐κ2N,N′)nickel(II) [[trithiocyanato‐κ3N‐sodium(I)]‐μ‐aqua‐κ2O:O]]

The title complex, {[Ni(C₂H₈N₂)₃][Na(NCS)₃(H₂O)]}_n, con­sists of discrete [Ni(en)₃]²⁺ dications (en is ethyl­enedi­amine) and polymeric [(H₂O)_0.5Na(NCS)₃(H₂O)_0.5]_n^2n? anions. The compound crystallizes in space group Pc1. The Ni^II atom lies on a threefold axis and has a distorted octahedral coordination geometry. The Na⁺ cation also lies on a site with imposed crystallographic threefold symmetry and is coordinated by the thio­cyanate N atoms (the thio­cyanates are in general posi­tions), by one water mol­ecule with crystallographically imposed 32 symmetry and by a second water mol­ecule with crystallographically imposed symmetry. The unique Na atom thus has trigonal–bipyramidal coordination. The O atoms of the water mol­ecules bridge the Na⁺ cations to form one‐dimensional polymeric chains in the crystal structure. The [Ni(en)₃]²⁺ dications are distributed around and between the chains and are linked to them via N—H?S hydrogen bonds.     

catena‐Poly[[dicyanamido(5,5′‐dimethyl‐2,2′‐bipyridine‐κ2N,N′)copper(II)]‐μ‐dicyanamido‐κ2N1:N5]

In the crystal structure of the title compound, [Cu(C₂N₃)₂(C₁₂H₁₂N₂)]_n, the Cu^II atom adopts a distorted square‐pyramidal geometry, the basal plane of which is formed by two N atoms of the bi­pyridine ligand, one N atom of a bidentate dicyan­amide anion and one N atom of a monodentate dicyan­amide anion [Cu—N = 1.9760 (15)–2.0157 (15) Å]. The apical position is occupied by an N atom of a bidentate dicyan­amide anion, located 2.2468 (16) Å from the Cu atom, thus forming a one‐dimensional polymeric chain.     

catena‐Poly­[[bis­(nitrato)(pyrimidine)­copper(II)]‐μ‐pyrimidine‐N:N′]

The title compound, [Cu(NO₃)₂(C₄H₄N₂)₂]_n, crystallizes as a linear polymeric compound with one pyrimidine ligand bridging between two Cu^II atoms and a second pyrimidine ligand coordinated in a monodentate manner. The distorted octahedral geometry around the Cu^II atom consists of two pyrimidine N atoms at distances of 2.033 (4) and 2.025 (4) Å, and two nitrate O atoms at distances at 1.987 (3) and 1.973 (3) Å. The apical positions are occupied by an N atom of a bridging pyrimidine ligand [2.291 (4) Å] and a nitrate O atom at a long distance of 2.781 (3) Å. The basal plane is almost planar, with trans angles of 176.23 (14) and 165.34 (15)°.