Manganese(II) Complexes with a Bulky Anthracene-Based Dicarboxylic Ligand: Syntheses, Crystal Structures, and Magnetic Properties

2008 ◽  
Vol 61 (5) ◽  
pp. 382 ◽  
Author(s):  
Chun-Sen Liu ◽  
E. Carolina Sañudo ◽  
Jun-Jie Wang ◽  
Ze Chang ◽  
Li-Fen Yan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Magnetic Coupling ◽  
Chain Structure ◽  
Polymeric Chain ◽  
Supramolecular Network ◽  
Higher Dimensional ◽  
Structures And Properties ◽  
Phenanthroline Complex

To investigate the influence of the bulky aromatic ring skeleton with a large conjugated π-system on the structures and properties of its complexes, two MnII complexes with the anthracene-based dicarboxylic ligand anthracene-9,10-dicarboxylic acid (H2L) and different 2,2′-bipyridyl-like chelating ligands were synthesized and characterized: {[Mn2(L)2(bipy)2(H2O)2]}∞ (1) and {[Mn(L)(phen)2](H2O)2.5}∞ (2) (L = anthracene-9,10-dicarboxylate, bipy = 2,2′-bipyridine, and phen = 1,10-phenanthroline). Complex 1 has a (4,4) two-dimensional (2D) sheet structure that is further assembled to form a three-dimensional (3D) supramolecular network by the co-effects of C–H···π and O–H···O hydrogen-bonding interactions. Complex 2 adopts a one-dimensional (1D) polymeric chain structure by using the chelating phen instead of bipy in 1, which is further interlinked by interchain C–H···π interactions, which results in a higher-dimensional supramolecular network from the different crystallographic directions. The relevant results reveal that the steric bulk of the anthracene ring in H2L may play an important role in the formation of 1 and 2. Moreover, the magnetic properties of 1 and 2 show that the long Mn···Mn intermetallic separations result in weak magnetic coupling, along with the corresponding coupling constant J parameters related to their structural characteristics, –0.35 cm–1 for 1 and –3.0 cm–1 for 2.

Copper(II) Complexes with cis-Epoxysuccinate Ligand: Syntheses, Crystal Structures, and Magnetic Properties

2011 ◽  
Vol 64 (2) ◽  
pp. 217 ◽  
Author(s):  
Shao-Ming Fang ◽  
E. Carolina Sañudo ◽  
Min Hu ◽  
Qiang Zhang ◽  
Li-Ming Zhou ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Measurements ◽  
Three Dimensional ◽  
Magnetic Coupling ◽  
Supramolecular Interactions ◽  
Stacking Interactions ◽  
Ferromagnetic Coupling ◽  
Two Dimensional ◽  
Structural Comparison ◽  
Higher Dimensional

Three CuII complexes with cis-epoxysuccinate ligand were synthesized and structurally characterized: [Cu(ces)(phen)]2 (1), [Cu(ces)(bpy)]2 (2), and {[Cu2(ces)(pp)2(CH3OH)]}∞ (3), (ces = cis-epoxysuccinate, phen = 1,10-phenanthroline, bpy = 2,2′-bipyridine, and pp = 3-(2-pyridyl)pyrazole with pyrazolyl N-donor deprotonated). Structural analysis reveals that both 1 and 2 have the very similar dinuclear units that are extended by the intermolecular supramolecular interactions, such as C–H⋯O, C–H⋯π, and aromatic π⋯π stacking interactions, to give rise to the higher-dimensional frameworks. Complex 3 has a two-dimensional (2D) layered structure that is further assembled to form a three-dimensional framework by the inter-layer C–H⋯O hydrogen-bonding and C–H⋯π interactions. A structural comparison with those of our previous work in the absence of auxiliary co-ligand suggests that the introduction of 2,2′-bipyridyl-like molecules plays an important role in constructing the final structures of 1–3. Magnetic measurements demonstrate that 1 and 2 exhibit ferromagnetic coupling with the corresponding J values of 1.8 cm–1 for 1 and 1.5 cm–1 for 2, whereas 3 shows more complicated magnetic coupling.

scholarly journals Crystal structure of a polymeric calcium levulinate dihydrate:catena-poly[[diaquacalcium]-bis(μ2-4-oxobutanoato)]

2015 ◽  
Vol 71 (5) ◽  
pp. 494-497
Author(s):  
Ananda S. Amarasekara ◽  
Dominique T. Sterling-Wells ◽  
Carlos Ordonez ◽  
Marie-Josiane Ohoueu ◽  
Marina S. Fonari
Keyword(s):  
Hydrogen Bonds ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Axial Direction ◽  
Chain Structure ◽  
Dimensional Structure ◽  
Polymeric Chain ◽  
Water Molecules ◽  
Carboxylate Ligands ◽  
Length Range

In the title calcium levulinate complex, [Ca(C5H7O3)2(H2O)2]n, the Ca2+ion lies on a twofold rotation axis and is octacoordinated by two aqua ligands and six O atoms from four symmetry-related carboxylate ligands, giving a distorted square-antiprismatic coordination stereochemistry [Ca—O bond-length range = 2.355 (1)–2.599 (1) Å]. The levulinate ligands act both in a bidentate carboxylO,O′-chelate mode and in a bridging mode through one carboxyl O atom with an inversion-related Ca2+atom, giving a Ca...Ca separation of 4.0326 (7) Å. A coordination polymeric chain structure is generated, extending along thec-axial direction. The coordinating water molecules act as double donors and participate in intra-chain O—H...O hydrogen bonds with carboxyl O atoms, and in inter-chain O—H...O hydrogen bonds with carbonyl O atoms, thus forming an overall three-dimensional structure.

Synthesis, structural characterization and computational studies of catena-poly[chlorido[μ3-(pyridin-1-ium-3-yl)phosphonato-κ3 O:O′:O′′]zinc(II)]

2017 ◽  
Vol 73 (5) ◽  
pp. 363-368
Author(s):  
Magdalena Wilk-Kozubek ◽  
Katarzyna N. Jarzembska ◽  
Jan Janczak ◽  
Veneta Videnova-Adrabinska
Keyword(s):  
Hydrogen Bonds ◽  
Metal Ion ◽  
Three Dimensional ◽  
Quantitative Information ◽  
Polymeric Chain ◽  
Supramolecular Network ◽  
Monoclinic Space Group ◽  
Face To Face ◽  
Counter Ions ◽  
Phosphonate Ligands

Coordination polymers are constructed from two basic components, namely metal ions, or metal-ion clusters, and bridging organic ligands. Their structures may also contain other auxiliary components, such as blocking ligands, counter-ions and nonbonding guest or template molecules. The choice or design of a suitable linker is essential. The new title zinc(II) coordination polymer, [Zn(C5H5NO3P)Cl] n , has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction and vibrational spectroscopy (FT–IR and FT–Raman). Additionally, computational methods have been applied to derive quantitative information about interactions present in the solid state. The compound crystallizes in the monoclinic space group C2/c. The four-coordinated ZnII cation is in a distorted tetrahedral environment, formed by three phosphonate O atoms from three different (pyridin-1-ium-3-yl)phosphonate ligands and one chloride anion. The ZnII ions are extended by phosphonate ligands to generate a ladder chain along the [001] direction. Adjacent ladders are held together via N—H...O hydrogen bonds and offset face-to-face π–π stacking interactions, forming a three-dimensional supramolecular network with channels. As calculated, the interaction energy between the neighbouring ladders is −115.2 kJ mol−1. In turn, the cohesive energy evaluated per asymmetric unit-equivalent fragment of a polymeric chain in the crystal structure is −205.4 kJ mol−1. This latter value reflects the numerous hydrogen bonds stabilizing the three-dimensional packing of the coordination chains.

An organic–inorganic hybrid compound containing imidazolium cations and a one-dimensional lithium hexacyanidocobaltate-based anionic framework

2014 ◽  
Vol 70 (6) ◽  
pp. 603-605 ◽  
Author(s):  
Xiu-Dan Shao ◽  
Chun-Hua Yu
Keyword(s):  
Three Dimensional ◽  
Chain Structure ◽  
Supramolecular Network ◽  
Monoclinic Space Group ◽  
Zigzag Chain ◽  
Imidazolium Chloride ◽  
Hybrid Compound ◽  
Inorganic Hybrid ◽  
One Dimensional ◽  
Imidazolium Cations

An organic–inorganic hybrid compound,catena-poly[bis(3H-imidazol-1-ium) [[tetracyanido-κ4C-cobalt(III)]-μ-cyanido-κ2C:N-[diaqualithium(I)]-μ-cyanido-κ2N:C]], {(C3H5N2)2[CoLi(CN)6(H2O)2]}n, was synthesized by the reaction of Li3[Co(CN)6] with imidazolium chloride in aqueous solution. The compound crystallizes in the monoclinic space groupC2/c(data collected at 273 K). In the crystal structure, neighbouring [Co(CN)6]3−anionic units are linked by Li+cations through the cyanide groups in atransmode, forming a one-dimensional zigzag chain structure extending along thecaxis. A three-dimensional supramolecular network is formed through hydrogen-bonding interactions and is further stabilized by weak CN...π interactions between the cyanide groups and the imidazolium cations.

Coordination Polymers with a Bulky Perylene-Based Tetracarboxylate Ligand: Syntheses, Crystal Structures, and Luminescent Properties

2010 ◽  
Vol 63 (3) ◽  
pp. 463 ◽  
Author(s):  
Chun-Sen Liu ◽  
Min Hu ◽  
Song-Tao Ma ◽  
Qiang Zhang ◽  
Li-Ming Zhou ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Luminescent Properties ◽  
Supramolecular Interactions ◽  
Polymeric Chain ◽  
Stacking Interactions ◽  
One Dimensional ◽  
Π Stacking ◽  
Higher Dimensional ◽  
Interchain Interactions

To explore the coordination possibilities of perylene-based ligands with a larger conjugated π-system, four ZnII, MnII, and CoII coordination polymers with perylene-3,4,9,10-tetracarboxylate (ptc) and the chelating 1,10-phenanthroline (phen) ligands were synthesized and characterized: {[Zn2(ptc)(phen)2](H2O)10}∞ (1), {[Zn3(ptc)(OH)2(phen)2](H2O)3}∞ (2), {[Mn(ptc)0.5(phen)(H2O)2](H2O)1.5}∞ (3), and {[Co(ptc)0.5(phen)(H2O)2](H2O)2.5}∞ (4). Structural analysis reveals that complexes 1 and 2 both take one-dimensional polymeric chain structures with dinuclear and trinuclear units as nodes, respectively, which are further extended via the accessorial secondary interchain interactions, such as C–H···O H-bonding or aromatic π···π stacking interactions, to give rise to the relevant higher-dimensional frameworks. Compound 3 has a two-dimensional sheet structure that is further assembled to form a three-dimensional framework by interlayer π···π stacking interactions. Complex 4 is a one-dimensional ribbon-like array structure that is interlinked by the co-effects of intermolecular π···π stacking and C–H···π supramolecular interactions, resulting in a higher-dimensional framework from the different crystallographic directions. Moreover, complexes 1–4 exhibit strong solid-state luminescence emissions at room temperature, which mainly originate from intraligand π→π* transitions of ptc.

catena-Poly[[[aquazinc(II)]-bis[μ-(p-phenylenedioxy)diacetato]-zinc(II)-μ-1,4-bis(1H-imidazol-l-yl)butane] dihydrate]

2007 ◽  
Vol 63 (11) ◽  
pp. m2833-m2833
Author(s):  
Ming Lv
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Three Dimensional ◽  
Chain Structure ◽  
Supramolecular Network ◽  
Octahedral Environment ◽  
A Chain

In the title compound, {[Zn2(C10H8O6)2(C10H14N4)(H2O)2]·2H2O} n , the ZnII atom is six-coordinated by one N atom from one 1,4-bis(1H-imidazol-l-yl)butane ligand and five O atoms from two different (p-phenylenedioxy)diacetate ligands and one water molecule in a very distorted ZnNO5 octahedral environment. Two (p-phenylenedioxy)diacetate ligands bridge two ZnII atoms to form a dimer. The dimers are further linked by the centrosymmetric 1,4-bis(1H-imidazol-l-yl)butane ligands, thus forming a chain structure. O—H...O hydrogen bonds link the chains, forming a three-dimensional supramolecular network.

scholarly journals Crystal structure of poly[[di-μ2-aqua-aquasodium] 4-amino-3,5,6-trichloropyridine-2-carboxylate trihydrate], the sodium salt of the herbicide picloram

2015 ◽  
Vol 71 (8) ◽  
pp. 931-933
Author(s):  
Graham Smith
Keyword(s):  
Sodium Salt ◽  
Three Dimensional ◽  
Chain Structure ◽  
Title Complex ◽  
Dimensional Structure ◽  
Polymeric Chain ◽  
Water Molecules ◽  
Amino Group ◽  
Trigonal Bipyramidal ◽  
Hydrogen Bonding Interactions

In the structure of the title complex, {[Na(H2O)3](C6H2Cl3N2O2)·3H2O}n, the sodium salt of the herbicide picloram, the cation adopts a polymeric chain structure, based on μ2-aqua-bridged NaO5trigonal–bipyramidal complex units which have, in addition, a singly bonded water molecule. Each of the bridges within the chain, which extends parallel to theaaxis, is centrosymmetric, with Na...Na separations of 3.4807 (16) and 3.5109 (16) Å. In the crystal, there are three water molecules of solvation and these, as well as the coordinating water molecules and the amino group of the 4-amino-3,5,6-trichloropicolinate anion, are involved in extensive inter-species hydrogen-bonding interactions with carboxyl and water O atoms, as well as the pyridine N atom. Among these associations is a centrosymmetric cyclic tetrawaterR44(8) motif, resulting in an overall three-dimensional structure.

A Silver(I) Coordination Polymer Based on a Schiff Base Ligand: Synthesis, Crystal Structure and Luminescence Properties

2013 ◽  
Vol 68 (3) ◽  
pp. 284-288 ◽  
Author(s):  
Lin Yu Jin ◽  
Meng Meng Li ◽  
Dong Bin Dang ◽  
Yan Bai ◽  
Yan Ning Zheng
Keyword(s):  
Coordination Polymer ◽  
Room Temperature ◽  
Three Dimensional ◽  
Chain Structure ◽  
Luminescence Properties ◽  
Tridentate Ligand ◽  
Supramolecular Network ◽  
Zigzag Chain ◽  
X Ray Diffraction ◽  
X Ray

A new Ag(I) coordination polymer [AgL(NO3)]n 1 (L=4-(pyridine-2-yl)methyleneamino-1,2,4- trizaole) has been synthesized and characterized by IR spectroscopy, elemental analysis, powder and single-crystal X-ray diffraction. The Ag(I) atom has a seesaw environment with an N3O donor set from three N atoms of two ligands and one O atom of one NO-3 anion. Each twisted tridentate ligand is bound to two silver centers, and each silver atom is coordinated by two ligands thereby generating a zigzag chain structure. The chains interact with each other featuring a three-dimensional supramolecular network through multiple weak C-H···π interactions and C-H···O hydrogen bonds. The luminescence properties of the polymer 1 were investigated in the solid state at room temperature.

catena-Poly[[[diaqua[3-(pyridin-4-yl)benzoato-κ2O,O′]terbium(III)]-bis[μ-3-(pyridin-4-yl)benzoato-κ2O:O′]] monohydrate]

2012 ◽  
Vol 68 (11) ◽  
pp. m303-m305
Author(s):  
Hai-Rong Wang ◽  
Chao-Hui Xia ◽  
Guo-Ting Li
Keyword(s):  
Hydrogen Bonding ◽  
Title Compound ◽  
Three Dimensional ◽  
Electronic Transitions ◽  
Polymeric Chain ◽  
Water Molecules ◽  
Supramolecular Network

In the title compound, {[Tb(C12H8NO2)3(H2O)2]·H2O}n, the TbIIIcation is in an eight-coordinate environment, ligated by six carboxylate O atoms from five 3-(pyridin-4-yl)benzoate (L) ligands and by two O atoms from water molecules. The cations are bridged by the carboxylate O atoms of theLligands to form a two-stranded polymeric chain which is assembled into a three-dimensional supramolecular network through regular interchain O—H...N hydrogen bonding. On excitation at 320 nm, the title compound displays a series of emissions, which were assigned to the characteristic electronic transitions of TbIII.

catena-Poly[[[aquabis[3-(4-carboxyphenoxy)propionato-κ2 O,O′]zinc(II)]-μ-4,4′-bipyridine-κ2 N:N′] dihydrate]

2007 ◽  
Vol 63 (11) ◽  
pp. m2791-m2792
Author(s):  
Li-Li Kong ◽  
Shan Gao ◽  
Li-Hua Huo
Keyword(s):  
Hydrogen Bonding ◽  
Symmetry Axis ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Chain Structure ◽  
Supramolecular Network ◽  
Stacking Interactions ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Centroid Distance

In the title compound, {[Zn(C10H9O5)2(C10H8N2)(H2O)]·2H2O} n , the Zn atom, which lies on a twofold rotation axis, has a distorted pentagonal–bipyramidal geometry, involving four O atoms from two 3-(4-carboxyphenoxy)propionate groups, two N atoms from two 4,4′-bipyridine ligands and one water molecule, also lying on the symmetry axis. 4,4′-Bipyridine ligands link adjacent Zn atoms, forming a one-dimensional chain structure. Furthermore, a three-dimensional supramolecular network is buildt up via hydrogen bonding and π–π stacking interactions [centroid–centroid distance 3.9096 (9) Å].

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