Anion exchange properties of a two-dimensional coordination framework of cadmium(II) with 1,3-bis(imidazol-1-ylmethyl)-5-methylbenzeneElectronic supplementary information (ESI) available: solid state IR spectra of the title compound and anion-exchanged product. See http://www.rsc.org/suppdata/nj/b1/b106750h/

2001 ◽  
Vol 25 (11) ◽  
pp. 1379-1381 ◽  
Author(s):  
Bin Sui ◽  
Jian Fan ◽  
Taka-aki Okamura ◽  
Wei-Yin Sun ◽  
Norikazu Ueyama
Keyword(s):  
Solid State ◽  
Ir Spectra ◽  
Anion Exchange ◽  
Title Compound ◽  
Supplementary Information ◽  
Two Dimensional ◽  
Coordination Framework ◽  
Exchange Properties

[1-(Pyrazin-2-yl)ethylidene]hydrazine: a new multitopic ligand for the design of hybrid molecular frameworks

2018 ◽  
Vol 74 (4) ◽  
pp. 424-427
Author(s):  
Muhammad Arif Kassim ◽  
Ubaidullah H. M. Yassin ◽  
Ai Ling Tan ◽  
Anwar Usman ◽  
Malai Haniti S. A. Hamid
Keyword(s):  
Double Bond ◽  
Solid State ◽  
Supramolecular Chemistry ◽  
Title Compound ◽  
Antimicrobial Agents ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network

Hydrazones and their derivatives are closely related to imine compounds and are potential antimicrobial agents. They have also found application in supramolecular chemistry as multitopic ligands to link multiple metal centres for the design of hybrid molecular frameworks. The molecule of the title compound, C6H8N4, consists of an imine linkage with an N—N bond length of 1.3540 (14) Å. This asymmetric compound is nearly planar and adopts an E configuration about the azomethine C=N double bond. In the solid state, there are two intermolecular N—H...N interactions that interconnect the molecules into a two-dimensional network. The three-dimensional arrangement of the crystal packing is further stabilized by intermolecular π–π interactions interconnecting the centroids of the heterocyclic rings.

A new two-dimensional CdII coordination polymer based on 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and 1,3-phenylenediacetic acid: synthesis, crystal structure and physical properties

2018 ◽  
Vol 74 (12) ◽  
pp. 1576-1580 ◽  
Author(s):  
Ning-Ning Chen ◽  
Jian-Ning Ni ◽  
Jun Wang
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Acid Synthesis ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Framework ◽  
Oriented Parallel

A novel two-dimensional CdII coordination framework, poly[[[μ-1,3-bis(2-methyl-1H-imidazol-1-yl)benzene-κ2 N:N′](μ-1,3-phenylenediacetato-κ4 O,O′:O′′,O′′′)cadmium(II)] dihydrate], {[Cd(C10H8O4)(C14H14N4)]·2H2O} n or {[Cd(PDA)(1,3-BMIB)]·2H2O} n [1,3-BMIB is 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and H2PDA is 1,3-phenylenediacetic acid], has been prepared and characterized using IR, elemental analysis, thermal analysis and single-crystal X-ray diffraction, the latter revealing that the compound is a (4,4) grid coordination polymer with layers oriented parallel to the bc crystal planes. In the crystal, adjacent layers are further connected by O—H...O and C—H...O hydrogen bonds, forming a three-dimensional structure in the solid state. In addition, the compound exhibits strong fluorescence emissions and shows photocatalytic activity for the degradation of methylene blue in the solid state at room temperature.

Freeze-drying synthesis of an amorphous Zn2+ complex and its transformation to a 2-D coordination framework in the solid state

2016 ◽  
Vol 45 (10) ◽  
pp. 4127-4131 ◽  
Author(s):  
T. Itakura ◽  
S. Horike ◽  
M. Inukai ◽  
S. Kitagawa
Keyword(s):  
Solid State ◽  
Freeze Drying ◽  
Two Dimensional ◽  
Coordination Framework

An amorphous and metastable precursor for a Zn two-dimensional coordination framework was synthesised via freeze drying.

scholarly journals Synthèse, étude et validation structurale d'un triple bis-molybdate en couches, Ag0.60Na0.40Fe(MoO4)2lié à yavapaiite

2016 ◽  
Vol 72 (5) ◽  
pp. 737-740 ◽  
Author(s):  
Amira Souilem ◽  
Mohamed Faouzi Zid
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Title Compound ◽  
Interlayer Space ◽  
Related Structure ◽  
Site Symmetry ◽  
Two Dimensional

The title compound, Ag0.60Na0.40Fe(MoO4)2{silver sodium iron(III) bis[molybdate(VI)]}, was synthesized by a solid-state reaction. The structure is built up from FeO6octahedra and MoO4tetrahedra sharing corners to form a two-dimensional framework parallel to the (001) plane. The occupationally disordered (Ag/Na)+cations are located in the interlayer space. These [Fe(MoO4)2−]nlayers are similar to those in the isotypic yavapaiite-related structure of NaFe(MoO4)2. All atoms are on general positions except for Fe (site symmetry -1) and Ag/Na (site symmetry 2). The Ag/Na occupancies of the latter site were refined to 0.597 (4):0.403 (5). The title structure is compared to similar structures.

Methyl 4-(3-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

2006 ◽  
Vol 62 (4) ◽  
pp. o1431-o1432 ◽  
Author(s):  
Bing-Jian Yang ◽  
Jian-Jun Li ◽  
Zhen-Hua Li ◽  
Ping Li ◽  
Wei-Ke Su
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Title Compound ◽  
Two Dimensional ◽  
State Structure ◽  
Solid State Structure ◽  
Compound C ◽  
Hydrogen Bonding Interactions ◽  
Dimensional Network

The solid-state structure of the title compound, C14H16N2O4, is characterized by hydrogen-bonding interactions, linking the molecules into chains. Hydrogen-bonding interactions between neighbouring chains form a two-dimensional network.

Circular dichroism and infrared study of β-turn formation in repeat peptides of elastin

1987 ◽  
Vol 52 (5) ◽  
pp. 1356-1361
Author(s):  
S. Abdel Rahman ◽  
M. Elsafty ◽  
A. Hattaba
Keyword(s):  
Circular Dichroism ◽  
Solid State ◽  
Ir Spectra ◽  
Chain Length ◽  
Room Temperature ◽  
Infrared Study ◽  
Feature Characteristic ◽  
C 50 ◽  
The Stability ◽  
Circular Dichroïsm

The conformation of elastin-like peptides Boc-Ala-Pro-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM were examined in solution using circular dichroism at 30 °C, 50 °C, and 70 °C and in solid state by IR at room temperature. The studies show that the β-turn is a significant conformational feature for peptides under investigation in solution at 30 °C and 50 °C, but at 70 °C the tetra, hexa, and decapeptides show the CD feature characteristic of the β-structure while the dodecapeptide spectra show the presence of β-turn which indicates the stability of the β-turn at this chain length. The IR spectra show that in the solid state at room temperature all investigated peptides assume essentially a β-turn except the tetrapeptide which present evidence of antiparallel β-structure. The β-turn contribution in the IR spectra increases with the increase of the chain length of the peptide.

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