Synthesis and Crystal Structure of a 1D Coordination Polymer [Cd(pydc)(phen)]<Subscript>n</Subscript> (H<Subscript>2</Subscript>pydc = pyridine-2,3-dicarboxylic acid,phen = 1,10-phenanthroline)

Abstract  A new 1D coordination polymer, [Cd(pydc)(phen)]_n (1) (pydc = pyridine-2,3-dicarboxylic acid, phen = 1,10-phenanthroline), has been hydrothermally synthesized and characterized by the elemental analysis, IR spectroscopy and single crystal X-ray diffraction. X-ray diffraction analysis reveals that 1 (C₁₉H₁₁CdN₃O₄) crystallizes in triclinic space group P-1, features an interesting 3D zipper-like network constructed from 1D ribbons via π–π stacking interactions. Unit cell parameters for 1: a = 7.681(1) ?, b = 10.546(2) ?, c = 11.358(2) ?, α = 107.12(2)°, β = 99.50(2)°, γ = 109.12 (2)° and Z = 2. Index Abstract  The title compound, [Cd(pydc)(phen)]n (1) (pydc = pyridine-2,3-dicarboxylic acid, phen = 1,10-phenanthroline), has been hydrothermally synthesized and characterized. X-ray diffraction analysis reveals that 1 features an interesting 3D zipper-like networks constructed by 1D ribbons via π–π stacking interactions.      

Synthesis,Crystal Structure and Optical Properties of a Three-Dimensional Supramolecule Assembled by a Dinuclear Neodymium Cluster

Abstract  

The reaction of isonicotinic acid (IN), sodium hydroxide, 1,10-phenanthroline (phen) and neodymium nitrate leads to the formation of a novel complex [Nd(phen)(IN)₂(NO₃)(H₂O)₂]₂ 1, which has been characterized by single crystal X-ray diffraction analysis: monoclinic, space group C2/c, with a = 24.93(2) Å, b = 9.452(3) Å, c = 21.406(5) Å, β = 97.87(2)°, and Z = 4. Complex 1 consists of a centrosymmetric dinclear molecule, and neodymium atoms are bridged by two carboxyl groups of two IN ligands. The dinuclear clusters of 1 are connected each other into a three-dimensional (3D) supramolecular framework, which is stabilized by O–H···O, O–H···N hydrogen bonds as well as π–π stacking interactions. Its electronic absorption and luminescence properties have also been investigated.     

Synthesis and Crystal Structure of a Novel Supramolecular Complex: [Co(2-Me-3,4-qudc)(Phen)<Subscript>2</Subscript>(H<Subscript>2</Subscript>O)]·4.5H<Subscript>2</Subscript>O

Abstract  

A novel 3D supramolecular complex, [Co(2-Me-3,4-qudc)(Phen)₂(H₂O)] 4.5H₂O (2-Me-3,4-qudc = 2-methylquinoline-3,4-dicarboxylate dianion, phen = 1,10-phenanthroline), has been synthesized under mild condition and characterized by elemental analyses, IR spectrum, thermogravimetric analysis and single-crystal X-ray diffraction. The complex crystallizes in the monoclinic space group P2₍₁₎ /n with unit cell parameters a = 13.1701(12) ?, b = 18.6728(19) ?, c = 15.0683(16) ?, β = 13.617(2), V = 3395.3(6) ?³, Z = 4. The 3D framework of the title compound is formed via O–H⋯O hydrogen-bonds and π–π stacking interactions. The lattice waters are stable at room temperature, but when thermally decomposed, the water loss is irreversible.     

Synthesis and Crystal Structure of a Novel Double-Chain Coordination Polymer [Zn<Subscript>2</Subscript>(bipy)<Subscript>2</Subscript>(btec)(H<Subscript>2</Subscript>O)<Subscript>2</Subscript>]<Subscript>n</Subscript> (bipy = 2,2′-bipyridine; btec = 1,2,4,5-benzenetetracarboxylate)

Abstract  A novel aromatic polycarboxylate polymer, [Zn₂(bipy)₂(btec)(H₂O)₂]_n (1), has been synthesized and structurally characterized by the single crystal X-ray diffraction. Compound 1 belongs to the triclinic crystal system, space group P-1; a = 7.7449(6) ?, b = 8.9286(8) ?, c = 10.7422(8) ?, α = 80.95(1)°, β = 70.21(1)°, γ = 78.14(1)°, V = 680.93(10) ?³, Z = 2. The coordination geometry of Zn(II) atom is distorted trigonal bipyramidal with two nitrogen atoms of one 2,2′-bipy group, two oxygen atoms from two different btec ligands, and one water. The 16-membered rings are alternately arranged forming an infinite 1-D double-chain structure. A 3-D network was constructed by interlayer C···H–O, O···H–O hydrogen bonds and π–π stacking interactions. Compound 1 exhibits fluorescence at room temperature in the solid state. Graphical Abstract  A 1-D double-chain aromatic polycarboxylate polymer, [Zn₂(bipy)₂(btec)(H₂O)₂]_n (1), has been synthesized and structurally characterized by the single crystal X-ray diffraction. A 3-D network was constructed by intermolecular C···H–O, O···H–O hydrogen bonds and π–π stacking interactions. Compound 1 exhibits fluorescence at room temperature in the solid state.      

Synthesis and Crystal Structure of 2D Supramolecular Compound [Co(phth)(phen) (H<Subscript>2</Subscript>O)<Subscript>3</Subscript>]·H<Subscript>2</Subscript>O

Abstract  

A 2D supramolecular compound [Co(phth)(phen) (H₂O)₃]·H₂O has been synthysized by the reactions of Co(NO₃)₂·6H₂O, 1, 10-phenanthroline(phen) and phthalate acid(H₂phth) in NaOH solution with pH 7.0.The complex has been characterized by elemental analysis, IR, and single-crystal X-ray diffraction analysis which shows it belongs the monoclinic space group P2(1)/n, a = 7.571(2) ?, b = 13.737(3) ?, c = 20.015(4) ?, β = 95.56(1)°. V = 2071.9(8) ?³, Mr = 475.31, Dc = 1.524 g/cm⁻³, Z = 4, F(000) = 980, μ(MoKa) = 0.879 mm⁻¹. The final R1 and wR2 are 0.0348 and 0.0711, respectively. The cobalt(II) ion is six-coordinated in a distorted octahedron to form a unit. Every unit is connected by hydrogen bonds forming 1D chain and 2D supramolecular network by π–π stacking interaction between adjoining chains.     

Synthesis,Crystal Structure and Luminescent Property of a Ternary Complex [Cd(sfdb)(3-pytpy)]<Subscript>2</Subscript>·2H<Subscript>2</Subscript>O (H<Subscript>2</Subscript>sfdb = 4,4′-Sulfonyldibenzoic Acid, 3-pytpy = 4′-(3-Pyridyl)-2,2′:6′,2″-Terpyridine)

Abstract  

A new ternary complex [Cd(sfdb)(3-pytpy)]₂·2H₂O (H₂sfdb = 4,4′-Sulfonyldibenzoic acid, 3-pytpy = 4′-(3-pyridyl)-2,2′:6′,2″-terpyridine) 1 has been hydrothermally synthesized and characterized by the elemental analysis, IR spectroscopy and single crystal X-ray diffraction. X-ray diffraction analysis reveals that 1 (C₃₄H₂₄CdN₄O₇S) crystallizes in triclinic space group P-1, features an interesting 1D channel-containing supramolecular structure constructed from grid-like dimers via π–π stacking interactions. Unit cell parameters for 1: a = 8.866(2) ?, b = 11.083(3) ?, c = 15.790(4) ?, α = 103.612(4)°, β = 95.044(3)°, γ = 101.083(4)° and Z = 2. The luminescent spectrum shows the emission peak of complex 1 is at 392 nm which is attributed to the intraligand transition.     

Crystallographic and Computational Analysis of the Supramolecular Structure of 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one

Abstract  

The structure of 5-dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one 1 has been determined by X-ray crystallography. The compound 1 crystallizes in the space group P−1 with two molecules in the asymmetric unit solvated with one molecule of the acetic acid The unit cell parameters are a = 8.796(1) ?, b = 10.531(1) ?, c = 10.680(1) ?, α = 96.901(2)o, β = 98.135(2)o, γ = 107.248(2)o. In the crystal molecules A and B are linked into R ₂²(9) hydrogen bonded rings and these rings form chains parallel to [101] Overall, the supramolecular structure 1 consists of two hydrogen bonded and two π–π stacking dimers. An energetic interplay between these dimers has been studied using B3LYP DFT calculations. In addition π–π interactions are analyzed using the Bader’s atoms in molecules’ (AIM) theory.     

Hydrogen Bonded 3D Supramolecular Architectures of Two Organic Salts Assembled from 2-Aminoheterocyclic Compounds and Phosphoric Acid

Abstract  

Two phosphate salts (2-aminopyrimidine): (phosphoric acid): H₂O [HL1⁺ (H₂PO₄) ⁻ ]·H₂O (1), and (4-phenylthiazol-2-amine): (phosphoric acid) [HL2⁺·(H₂PO₄)⁻] (2) based on 2-aminoheterocyclic compounds, 2-aminopyrimidine (L1), and 4-phenylthiazol-2-amine (L2) were prepared and structurally characterized by X-ray crystallography. Compound 1 crystallizes in the triclinic, space group P-1, with a = 6.2201(7) Å, b = 8.6139(9) Å, c = 9.4800(10) Å, α = 109.685(2)°, β = 106.3340(10)°, γ = 95.4450(10)°, V = 448.72(8) Å³, Z = 2. For 1, the cations were linked to each other via intermolecular C–H···N hydrogen bonds to form a 1-D chain structure running along the a-axis direction. The anions and the water molecules were connected alternatively along the a-axis direction through O–H···O hydrogen bonds to form a 1-D chain also. The cationic chains and the anionic chains were alternatively connected along the c-axis direction through N–H···O and C–H···O hydrogen bonds to form a 2D corrugated sheet. Adjacent sheets were combined together through π–π interaction to form double sheet. These double sheets were further joined together by O–H···O and N–H···O hydrogen bonds to produce a 3D network structure. Compound 2 crystallizes in the Orthorhombic, space group Pbca, with a = 10.1929(10) Å, b = 8.4406(9) Å, c = 27.589(2) Å, α = 90°, β = 90°, γ = 90°, V = 2373.6(4) Å³, Z = 8. In 2, the phosphates formed 1D chain along the b-axis through two P–O–H···O = P hydrogen bonds. The cations formed 1D zigzag chain along the b-axis direction under the CH–π interaction. The anionic chains were intercalated between two adjacent cationic chains through N–H···O, O–H···O, C–H···O, and O–S contacts. Such stacking repeated along the c-axis direction to form a 3D network structure.     

Synthesis, Crystal Structure and Magnetic Behaviour of {[Yb(1,4-BDC)1.5(H2O)4]·H2O}n (1,4-BDC?=?1,4-benzenedicarboxylate)

Abstract  

The title complex {[Yb(1,4-BDC)_1.5(H₂O)₄]·H₂O}_n (1) (1,4-BDC = 1,4-benzenedicarboxylate) has been hydrothermally synthesized and structurally characterized by the single crystal X-ray diffraction. Crystals of compound 1 belongs to the triclinic crystal system, space group P-1; a = 7.549(3) ?, b = 10.072(4) ?, c = 10.470(4) ?, α = 87.810(4)°, β = 82.531(4)°, γ = 86.306(4)°, V = 787.3(5) ?³, Z = 2. The Yb(III) atoms are linked by the deprotonated 1,4-BDC ligands in two kinds of bridging modes. Four Yb(III) atoms at each corner (nodes) and four 1,4-BDC ligands at each edge (spacers) form a edge–sharing 36-membered rings. The rhombohedral Yb₄(1,4-BDC)₄ arranged in an alternating fashion to construct a 1D ladder-like chain along the c axis. Two neighboring chains are linked to each other in a parallel fashion to construct 3D supramolecular structure by O–H···O hydrogen bonds and π–π stacking interactions. In addition, the properties of thermogravimetric analysis and magnetic behaviors of the complex have been also discussed.     

Synthesis,Crystal Structure and Luminescent Properties of One Coordination Polymer of Copper(II) Achieved from Pyridine-3,5-dicarboxylate

Abstract  

A new Cu(II) coordination polymer [Cu(3,5-pdc)(H₂O)₄·H₂O] _n 1 (3,5-pdc=3,5-pyridinedicarboxylic acid) has been synthesized by hydrothermal method and characterized by IR, elemental analysis, TG technique and X-ray crystallography. The crystallographic data for the compound 1: monoclinic P2₁/n, a = 11.361(5) ?, b = 7.095(3) ?, c = 14.575(6) ?, β = 107.630(4)°, V = 1,119.7(8) ?³, Z = 4, Dc = 1.891 Mg/m³, F(000) = 652, R ₁ = 0.0374, wR ₂ = 0.1083. Cu(II) atom has an distorted octahedral environment with N₂O₄ donor set of Cu(1) and O₆ donor set of Cu(2), respectively. Each ligand is bound to two Cu(II) ions and each copper atom is coordinated by two ligands thereby generating a 1D zigzag chain. The 1D chain was interacted each other feathering three-dimensional supramolecular network through π···π interactions and multiform intermolecular hydrogen bonds. The luminescent properties of the title complex in the solid state were investigated.     

Syntheses and Crystal Structures of Two New Cadmium(II) and Nickel(II) Complexes with 1,4-Phenylenediacetate and 2,2′-Bipyridyl-Like Ligands

Abstract  

Two new complexes, namely [Cd(PDA)_0.5(2,2′-bpy)Cl](H₂PDA) (1) and [Ni(PDA)(phen)(H₂O)]₂ (2) (H₂PDA = 1,4-phenylenediacetic acid, 2,2′-bpy = 2,2′-bipyridine, phen = 1,10-phenanthroline), have been synthesized and characterized by elemental analysis, IR spectra and X-ray crystal diffraction. Single-crystal X-ray diffraction analysis shows that complex 1 crystallizes in the triclinic space group P-1 with unit cell dimensions a = 8.760 (4) ?, b = 11.190 (5) ?, c = 13.917 (7) ?, α = 110.383 (5)°, β = 101.736 (5)°, γ = 100.612 (5)°, V = 1202.8 (10) ?³, Z = 2, R ₁ = 0.0314 and wR ₂ = 0.0898. Complex 2 crystallizes in the monoclinic space group P2(1)/n with unit cell dimensions a = 9.911 (3) ?, b = 17.924 (6) ?, c = 10.638 (4) ?, β = 94.998 (5)°, V = 1882.7 (11) ?³, Z = 2, R ₁ = 0.0397 and wR ₂ = 0.1150. In complex 1, Cd(II) ions are alternately bridged by PDA ligands and chloride ions into 1D chains and the PDA ligands display trans-configuration. Complex 2 is a dimer and two Ni(II) ions are linked by two PDA ligands with cis-configuration, resulting in a cyclic structure. In spite of these differences, both in complexes 1 and 2 there are π–π stacking interactions and hydrogen bonding to make them 3D supramolecular frameworks.     

CoL(SO4)0.5 ?·?4H2O and MnL2 ?· 2H2O (L = 1,10-Phenanthroline-4,5- f -triazolate): Synthesis, Crystal Structures and Hydrogen-Bonded Networks

Abstract  Two metal complexes of 1H-triazo-4,5-f-1,10-phenanthroline (HL), CoL(SO₄)_0.5 · 4H₂O (1) and MnL ₂ · 2H₂O (2) have been synthesized on hydrothermal conditions and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction analysis. Complex 1 was further assembled into a three-dimensional (3D) supramolecular network through the hydrogen-bonding interactions and inter-molecular π···π stacking interaction, 2 further assembled into a two-dimensional (2D) layer structure. This result shows that hydrogen-bonding interactions and π···π stacking interaction play important roles in the formation of coordination networks, especially in the aspect of linking the multinuclear discrete subunits or low-dimensional entities into high-dimensional supramolecular frameworks. Index abstract  Two metal complexes of 1H-triazo-4,5-f-1,10-phenanthroline (HL), CoL(SO₄)_0.5 · 4H₂O (1) and MnL₂ · 2H₂O (2) have been synthesized on hydrothermal conditions. Complex 1 was further assembled into a three-dimensional (3D) supramolecular network through the hydrogen-bonding interactions and inter-molecular π···π stacking interaction, 2 further assembled into a two-dimensional (2D) layer structure.      

Non-Covalent Interactions in a Nickel(II) Complex with Benzilate and 1,10-Phenanthroline

Abstract  

A new mixed-ligand nickel(II) coordination compound [Ni(bz)₂(phen)₂] (1) (bz = benzilate and phen = 1,10-phenanthroline) has been synthesized by refluxing nickel(II) acetate with benzilic acid and 1,10-phenantholine. Compound 1 has been characterized by elemental analysis, IR and electronic absorption spectroscopy, magnetic measurements, thermogravimetric analysis and single-crystal X-ray diffraction The crystal of 1 belongs to monoclinic crystal system, space group C2/c and its unit cell parameters are a = 25.881(3), b = 11.1728(15), c = 17.609(2) ? and β = 124.104(3)°. The effect of non-covalent interactions, such as π···π and C–H···π, on the 3D supramolecular organization of this molecular complex is analyzed.     

Structures of Two (<Emphasis Type="Italic">E</Emphasis>)-3-Substituted Cinnamoylbenzotriazole 1-Oxides

Abstract  

The molecule of (E)-3-(3-MeOC₆H₄CH=CHCO)-benzotriazole 1-oxide, 2, has a very near planar structure, while the 2-nitrophenyl ring is rotated out of the plane of the remaining atoms in (E)-3-(2-O₂NC₆H₄CH=CHCO)-benzotriazole 1-oxide, 1. The nitrogen oxide bond lengths in 1 and 2 are 1.258 (6) and 1.2683 (15) ?, respectively, and are in the region found for related compounds. There are no strong intermolecular hydrogen-bonds in either compound, instead there are weak C–H···O intermolecular hydrogen-bonds and π···π stacking interactions in 1, and C–H···O, C–H···π, and π···π stacking interactions in 2. Different three-dimensional arrays are generated in each case. Compound 1 crystallises in the orthorhombic space group Pna2₁, with a = 25.061 (2) ?, b = 3.6997 (2) ?, c = 14.2623 (12) ? and Z = 4. Compound 2 crystallises in the triclinic space group P-1, with a = 5.7297 (3) ?, b = 10.8440 (6) ?, c = 11.4965 (6) ?, α = 89.689 (3)°, β = 76.019 (3)°, γ = 75.047 (3)°, Z = 2.     

One-Dimensional Polymers Constructed with Paddle-Wheel Dinuclear Copper(II) Bridged by 4,4′-Bipyridine

Abstract  

The coordination compound {[Cu(NAP)₂](4,4′-bpy)_1/2}·DMF (1) was prepared by the reaction of α-naphthoic acid, 4,4′-bipyridine and Copper(II) acetate hydrate in basic solution, and was fully characterized by X-ray diffraction, element analysis, FTIR and TG analysis. Crystals of compound 1 belongs to the monoclinic crystal system, space group C2/c; a = 17.460(4) ?, b = 13.928(3) ?, c = 21.240(4) ?, β = 93.83(3), V = 5153.7 ?³, Z = 8. The structure analyses of 1 show a one-dimensional chain structure where the binuclear structural units [Cu₂(NAP)₄] are bridged by 4,4′-bipyridine molecules. Furthermore, the 1D chains are assembled to form 2D supramolecular sheet by intermolecular π···π stacking interactions between naphthalene rings.     

Synthesis,Structural and Thermal Studies of a New Nickel Complex Containing 2-Aminopyrimidine and Thiocyanate Mixed Ligands with a Three-Dimensional Network Structure

Abstract  

A new nickel(II) complex formulated as, trans-[Ni(amp)₂(SCN)₂(H₂O)₂]·2H₂O (1), (amp = 2-aminopyrimidine) has been synthesized and characterized by elemental analysis, IR spectroscopy, its molecular and crystal structures were determined by X-ray crystal structure analysis and its thermal stability by TGA/DTA methods. 1 is a neutral complex and the central atom sits on an inversion center and is coordinated by two endocyclic nitrogen atoms of two 2-aminopyrimidine heterocycles, two oxygen atoms of two water molecules and two nitrogen atoms of SCN⁻ ions. 2-aminopyrimidine molecules, thiocyanate ions and water molecules are in trans position. Thermal methods confirm two co-crystallized water molecules in 1. π–π stacking interactions and extensive O–H···O, O–H···N, O–H···S and N–H···N hydrogen bonds contribute to the formation of a three-dimensional supramolecular structure. Crystal data for complex at 120 K: triclinic, space group P-1, a = 7.2026(14), b = 7.8332(15), c = 9.0270(17) ?, α = 67.694(3), β = 72.732(4), γ = 77.012(4), Z = 1, R ₁ = 0.0323.     

Synthesis and Structure of a New Coordination Polymer [Cd(pzdc)(bpy)]<Subscript>n</Subscript> (H<Subscript>2</Subscript>pzdc = Pyrazine-2,3-dicarboxylic Acid,bpy = 2,2′-Bipyridine)

Abstract A new 3D coordination polymer, [Cd(pzdc)(bpy)]_n (1) (pzdc = pyrazine-2,3-dicarboxylic acid, bpy = 2,2′-bipyridine), has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum and single crystal X-ray diffraction. X-ray diffraction analysis reveals that 1 (C₁₆H₁₀CdN₄O₄) crystallizes in monoclinic space group P2₁/c, features an interesting 3D zipper-like networks constructed by 2D layers via strong π–π packing interactions. Cell unit parameter for 1: a = 9.767(1), b = 14.022(2), c = 13.719(2) ?, β = 100.86(1)^o, and Z = 4. Graphical Abstract A new 3D coordination polymer, [Cd(pzdc)(bpy)]_n (pzdc = pyrazine-2,3-dicarboxylic acid, bpy = 2,2′-bipyridine), has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum and single crystal X-ray diffraction. X-ray diffraction analysis reveals that [Cd(pzdc)(bpy)]_n features an interesting 3D zipper-like networks constructed by 2D layers via strong π–π packing interactions.      

Synthesis and Crystal Structure of Nickel(II) Complex with 2,2′-Biimidazole and 4-Aminobenzoic Acid

Abstract  The Ni(II) complex, [Ni(H₂biim)₂(PABA)₂]Cl₂·2H₂O, H₂biim being 2,2′-biimidazole, PABA being 4-aminobenzoic acid has been synthesized and the crystal structure determined using X-ray crystallography. The complex crystallizes in triclinic system, space group P − 1 with unit cell parameters a = 8.3920(9) ?, b = 9.8436(11) ?, c = 9.8874(11) ?, α = 94.862(2)°, β = 109.142(2)°, γ = 90.992(2)°, V = 767.95(15) ?³ and Z = 1. The molecules of the complex in the crystal assemble by way of N–H⋯Cl, O–H⋯Cl, O–H⋯O hydrogen bonds as well as π–π stacking interactions to provide a two-dimensional supramolecular structure. Index Abstract  Synthesis and Crystal Structure of Nickel(II) Complex with 2,2′-Biimidazole and 4-Aminobenzoic Acid Yanping Li and Pin Yang* The molecules of the title complex [Ni(H₂biim)₂(PABA)₂]Cl₂·2H₂O in the crystal assemble by way of N–H⋯Cl, O–H⋯Cl, O–H⋯O hydrogen bonds as well as π–π stacking interactions to provide a two-dimensional supramolecular structure.      

Supramolecular Network via Hydrogen Bonding and π–π Stacking in 4,4′-Bipyridin-1-ium Perchlorate Dihydrate

Abstract The crystal structure of 4,4′-bipyridin-1-ium perchlorate dihydrate, [C₁₀H₉N₂](ClO₄) · 2H₂O, is determined by room temperature X-ray diffraction. The compound crystallizes in the triclinic space group P-1 with a = 8.122(3) ?, b = 9.726(3) ?, c = 17.648(6) ?, α = 78.181(4)°, β = 82.797(5)°, γ = 67.439(4)°, Z = 2, V = 1258.4(7) ?³. In the compound, monoprotonated 4,4′-bipyridin-1-ium cations are self-assembled into supramolecular chains along the a-axis through N–H···N hydrogen bonds in a head-to-tail fashion. The chains are stacked via π–π stacking interactions to create two-dimensional sheets. The interlayer space is occupied by the hydrogen-bonded water chains that are linked to the organic sheets via C–H···O interactions and the perchlorate anions that are linked to the water chains and the organic sheets via O–H···O and C–H···O hydrogen bonds, respectively, thus generating a three-dimensional supramolecular architecture. Index Abstract Supramolecular Network via Hydrogen Bonding and π–π Stacking in 4,4′-Bipyridin-1-ium perchlorate dihydrate Jian-Yong Zhang, Ai-Ling Cheng and En-Qing Gao* Monoprotonated 4,4′-bipyridin-1-ium cations are self-assembled into supramolecular chains along the a-axis through N–H···N hydrogen bonds, and these chains are stacked via π–π stacking and hydrogen bond interactions involving water molecules and perchlorate anions.      

Two 3D Supramolecular Architectures Assembled With 1D or 2D Coordination Polymers by Cooperation of Coordination Bonds,Hydrogen Bonds and π···π Interactions

Abstract  

Two 3D supramolecular architectures, [Cu(tmbdc)(NH₃)₂] _n , 1, (tmbdc = 2,3,5,6-tetramethylbenzenedicarboxylate), and {[Cu₃(btc)₂(NH₃)₆(H₂O)]·2H₂O} _n , 2, (btc = 1,3,5-benzenetricarboxylate) have been assembled with 1D or 2D coordination polymers as supramolecular synthons. The geometry matching of the moieties is the key factor for the formation of the two supramolecular architectures by the cooperation of coordination bonds, hydrogen bonds and π···π interactions. Crystal data for 1: Formula CuC₁₂H₁₈N₂O₄, monoclinic, space group P2₁/c, a = 9.0134(5), b = 10.8785(5), c = 6.4702(3) ?, β = 91.679(1)°, V = 634.15(5) ?³, Z = 2, R ₁ = 0.0251 and wR ₂ = 0.0722. Crystal data for 2: Formula Cu₃C₁₈H₃₀N₆O₁₅, monoclinic, space group C2/c, a = 13.9213(5), b = 17.1210(6), c = 12.5271(5) ?, β = 114.779(1)°, V = 2710.89(17) ?³, Z = 4, R ₁ = 0.0245 and wR ₂ = 0.0665. The positions and isotropic displacement parameters of all the hydrogen atoms are refined.