Spatiotemporal Studies of the One‐Dimensional Coordination Polymer [Fe(ebtz) 2 (C 2 H 5 CN) 2 ](BF 4 ) 2 : Tug of War between the Nitrile Reorientation Versus Crystal Lattice as a Tool for Tuning the Spin Crossover Properties**

2020 ◽  
Vol 26 (63) ◽  
pp. 14419-14434
Author(s):  
Maria Książek ◽  
Marek Weselski ◽  
Marcin Kaźmierczak ◽  
Aleksandra Tołoczko ◽  
Miłosz Siczek ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Crystal Lattice ◽  
Spin Crossover ◽  
One Dimensional ◽  
The One ◽  
Versus Crystal

scholarly journals Mixed Ca/Sr salt forms of salicylic acid: tuning structure and aqueous solubility

2018 ◽  
Vol 74 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Pamela Allan ◽  
Jean-Baptiste Arlin ◽  
Alan R. Kennedy ◽  
Aiden Walls
Keyword(s):  
Salicylic Acid ◽  
Coordination Polymer ◽  
Single Crystal ◽  
Structural Feature ◽  
Structural Changes ◽  
Aqueous Solubility ◽  
Single Crystal Diffraction ◽  
One Dimensional ◽  
The One ◽  
Salt Forms

Ten isostructural single-crystal diffraction studies of mixed cation Ca/Sr salt forms of the salicylate anion are presented, namely catena-poly[[diaquacalcium(II)/strontium(II)]-bis(μ2-2-hydroxybenzoato)], [Ca1–x Sr x (C7H5O3)2(H2O)2] n , where x = 0, 0.041, 0.083, 0.165, 0.306, 0.529, 0.632, 0.789, 0.835 and 1. The structure of an isostructural Sr/Ba species, namely catena-poly[[diaquastrontium(II)/barium(II)]-bis(μ2-2-hydroxybenzoato)], [Sr0.729Ba0.271(C7H5O3)2(H2O)2], is also described. The Ca/Sr structures form a series where, with increasing Sr content, the unit cell expands in both the crystallographic a and c directions (by 1.80 and 3.18%, respectively), but contracts slightly in the b direction (−0.31%). The largest percentage structural expansion lies parallel to the direction of propagation of the one-dimensional coordination polymer that is the primary structural feature. This structural expansion is thus associated with increased M—O distances. Aqueous solubility measurements show that solubility generally increases with increasing Sr content. Thus, tuning the composition of these mixed counter-ion salt forms leads to systematic structural changes and allows solubility to be tuned to values between those for the pure Ca and Sr species.

A new photoluminescent coordination polymer constructed with an N-donor ligand having extended coordination capabilities derived from quinoline and pyridine

2020 ◽  
Vol 76 (5) ◽  
pp. 500-506
Author(s):  
Kamil Twaróg ◽  
Małgorzata Hołyńska ◽  
Andrzej Kochel
Keyword(s):  
Coordination Polymer ◽  
Pyridyl Ring ◽  
Ligand Molecule ◽  
Hydrothermal Conditions ◽  
Absorption Bands ◽  
Donor Ligand ◽  
One Dimensional ◽  
The One ◽  
Chloride Monohydrate ◽  
Carboxylic Acid Ligand

Employment of the organic 2-(pyridin-4-yl)quinoline-4-carboxylic acid ligand with extended coordination capabilities leads to the formation of the one-dimensional copper(II) coordination polymer catena-poly[[diaquacopper(II)]-bis[μ-2-(pyridin-4-yl)quinoline-4-carboxylato]-κ2 N 2:O;κ2 O:N], {[Cu(C15H9N2O2)2(H2O)2]·2H2O} n , under hydrothermal conditions. The ligand, isolated as its hydrochloride salt, namely, 4-(4-carboxyquinolin-2-yl)pyridinium chloride monohydrate, C15H11N2O2 +·Cl−·H2O, reveals a pseudosymmetry element (translation a/2) in its crystal structure. The additional pyridyl N atom, in comparison with the previously reported analogues with an arene ring instead of the pyridyl ring in the present ligand molecule, promotes the formation of a one-dimensional coordination polymer, rather than discrete molecules. This polymer shows photoluminescent properties with bathochromic/hypsochromic shifts of the ligand absorption bands, leading to a single band at 479 nm. The CuII ions are involved in weak antiferromagnetic interactions within dimeric units, as evidenced by SQUID magnetometry.

scholarly journals catena-Poly[[di-tert-butyltin(IV)]-μ-oxalato]

2014 ◽  
Vol 70 (4) ◽  
pp. m133-m133 ◽  
Author(s):  
Martin Reichelt ◽  
Hans Reuter
Keyword(s):  
Nitric Acid ◽  
Coordination Polymer ◽  
Van Der Waals Interactions ◽  
Mirror Plane ◽  
Coordination Geometry ◽  
One Dimensional ◽  
Bond Lengths ◽  
The One ◽  
Oxalate Ion ◽  
Asymmetric Coordination

The title compound, [Sn(C4H9)2(C2O4)]n, an unexpected side product in the reaction of di-tert-butyltin(IV) oxide with nitric acid, represents the first diorganotin(IV) oxalate to be structurally characterized. The SnIVatom of the one-dimensional coordination polymer is located on a mirror plane and is coordinated by two chelating oxalate ions with two rather different Sn—O bond lengths of 2.150 (1) and 2.425 (1) Å, and twot-butyl groups with Sn—C bond lengths of 2.186 (2) and 2.190 (2) Å. The coordination polyhedron around the SnIVatom is a distorted tetragonal disphenoid. The centrosymmetric oxalate ion also has an asymmetric coordination geometry, as reflected by the two slightly different C—O bond lengths of 1.242 (2) and 1.269 (2) Å. The chains of the polymer propagate along theb-axis direction. Only van der Waals interactions are observed between the chains.

A one-dimensional cobalt(II) coordination polymer based on 2,4′-oxydibenzoic acid: poly[[[diaquabis[2-(4-carboxyphenoxy)benzoato-κO1]cobalt(II)]-μ-4,4′-bipyridine-κ2N:N′] dihydrate]

2014 ◽  
Vol 70 (7) ◽  
pp. 654-658 ◽  
Author(s):  
Long Tang ◽  
Feng Fu ◽  
Ji-Jiang Wang ◽  
Qi-Rui Liu ◽  
Hang-Hang Zhao
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Condition ◽  
Dimensional Chain ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
The One ◽  
Two Sides

The reaction of CoSO4with 2,4-oxydibenzoic acid (H2oba) and 4,4′-bipyridine (bipy) under hydrothermal condition yielded a new one-dimensional cobalt(II) coordination polymer, {[Co(C14H9O5)2(C10H8N2)(H2O)2]·2H2O}n, which was characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, magnetic properties and single-crystal X-ray diffraction. The CoIIions are connected by bipy ligands into infinite one-dimensional chains. The Hoba−ligands extend out from the two sides of the one-dimensional chain. O—H...O hydrogen bonding extends these chains into a two-dimensional supramolecular architecture.

A sulfur coordination polymer with wide bandgap semiconductivity formed from zinc(II) and 5-methylsulfanyl-1,3,4-thiadiazole-2-thione

2019 ◽  
Vol 75 (9) ◽  
pp. 1243-1249
Author(s):  
Jun Zhang ◽  
Xiaofan Ma ◽  
Weili Kong ◽  
Fazhi Xie ◽  
Shizhen Yuan ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Chain Structure ◽  
The Other ◽  
Linear Temperature Dependence ◽  
Linear Temperature ◽  
One Dimensional ◽  
Hydrogen Bond Interactions ◽  
The One

The sulfur coordination polymer catena-poly[zinc(II)-μ2-bis[5-(methylsulfanyl)-2-sulfanylidene-2,3-dihydro-1,3,4-thiadiazol-3-ido-κ2 N 3:S]], [Zn(C3H3N2S3)2] n or [Zn2MTT4] n , constructed from Zn2+ ions and 5-methylsulfanyl-1,3,4-thiadiazole-2-thione (HMTT), was synthesized successfully and structurally characterized. [Zn2MTT4] n crystallizes in the tetragonal space group I\overline{4} (No. 82). Each MTT− ligand (systematic name: 5-methylsulfanyl-2-sulfanylidene-2,3-dihydro-1,3,4-thiadiazol-3-ide) coordinates to two different ZnII ions, one via the thione group and the other via a ring N atom, with one ZnII atom being in a tetrahedral ZnS4 and the other in a tetrahedral ZnN4 coordination environment. These tetrahedral ZnS4 and ZnN4 units are alternately linked by the organic ligands, forming a one-dimensional chain structure along the c axis. The one-dimensional chains are further linked via C—H...N and C—H...S hydrogen bonds to form a three-dimensional network adopting an ABAB-style arrangement that lies along both the a and b axes. The three-dimensional Hirshfeld surface analysis and two-dimensional (2D) fingerprint plots confirm the major interactions as C—H...S hydrogen bonds with a total of 35.1%, while 7.4% are C—H...N hydrogen-bond interactions. [Zn2MTT4] n possesses high thermal and chemical stability and a linear temperature dependence of the bandgap from room temperature to 270 °C. Further investigation revealed that the bandgap changes sharply in ammonia, but only fluctuates slightly in other solvents, indicating its promising application as a selective sensor.

Hexafluoridophosphate partial hydrolysis leading to the one-dimensional coordination polymer [{Cu(xantphos)(μ-PO2F2)}n]

2015 ◽  
Vol 58 ◽  
pp. 64-66 ◽  
Author(s):  
Sarah Keller ◽  
Fabian Brunner ◽  
Alessandro Prescimone ◽  
Edwin C. Constable ◽  
Catherine E. Housecroft
Keyword(s):  
Coordination Polymer ◽  
Partial Hydrolysis ◽  
One Dimensional ◽  
The One

Biphase synthesis of a one-dimensional coordination polymer based on a dinuclear CdIIsecondary building unit and a novel semi-rigid dicarboxylate

2012 ◽  
Vol 68 (12) ◽  
pp. m333-m335
Author(s):  
Xiaolai Zhang ◽  
Weiyong Ying
Keyword(s):  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Single Phase ◽  
Solvothermal Method ◽  
Solvothermal Reaction ◽  
Two Dimensional ◽  
One Dimensional ◽  
Secondary Building Units ◽  
The One ◽  
Solvothermal Conditions

A one-dimensional coordination polymer, namelycatena-poly[[aquapyridinecadmium(II)]-μ3-{4,4′-[(2,4,6-trimethyl-1,3-phenylene)bis(methylene)]dibenzoato}], [Cd(C25H22O4)(C5H5N)(H2O)]n, has been synthesized by a biphasic solvothermal reaction. The CdIIcation is located in a CdO5N six-coordinated environment. Thetrans4,4′-[(2,4,6-trimethyl-1,3-phenylene)bis(methylene)]dibenzoate ligand connects the CdIIcations to form a one-dimensional ribbon incorporating centrosymmetric [Cd2(COO)2] secondary building units. Inter-ribbon O—H...O hydrogen bonds extend the one-dimensional ribbons into a two-dimensional sheet. No π–π interactions are observed. Comparing products synthesized using a different method, it was found that biphasic solvothermal conditions play a crucial role in obtaining large well-shaped single crystals; only intractable precipitates were obtained by the traditional single-phase solvothermal method.

Sign in / Sign up

Export Citation Format

Share Document