Carboxylato Bridged Cyclic SBUs as Robust Features in a Series of Cu(II) Coordination Polymers and Halogen···Halogen Interactions in Crystal Packing

2022 ◽  
Author(s):  
Sanobar Naaz ◽  
Bhaswati Debnath ◽  
Sakhiul Islam ◽  
Samim Khan ◽  
Faruk Ahmed ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Crystal Packing

The role of weak interactions in the crystal packing of two novel 1D Hg(II) coordination polymers and investigation for preparation of their rod and spherical structures

2020 ◽  
Vol 501 ◽  
pp. 119243 ◽  
Author(s):  
Ghodrat Mahmoudi ◽  
Payam Hayati ◽  
Khosro Mohammadi ◽  
Ardavan Masoudiasl ◽  
Joel T. Mague ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Crystal Packing ◽  
Weak Interactions ◽  
Spherical Structures

scholarly journals Metallosupramolecular Compounds Based on Copper(II/I) Chloride and Two Bis-Tetrazole Organosulfur Ligands

Chemistry ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 33-49 ◽  
Author(s):  
Olaya Gómez-Paz ◽  
Rosa Carballo ◽  
Ana Belén Lago ◽  
Ezequiel M. Vázquez-López
Keyword(s):  
Coordination Polymer ◽  
Single Crystals ◽  
Intermolecular Interactions ◽  
Coordination Polymers ◽  
Crystal Packing ◽  
Weak Interactions ◽  
Synthetic Methods ◽  
Supramolecular Interactions ◽  
Chloride Dihydrate ◽  
Hirshfeld Surfaces

The present work assesses the ability of two flexible bis-tetrazole organosulfur ligands to build up different metallosupramolecular compounds based on the analysis of the different supramolecular interactions. The reaction of copper(II) chloride dihydrate with the N,N’-donor dithioether ligands bis(1-methyl-1H-tetrazole-5-ylthio)methane (BMTTM) and 1,2-bis(1-methyl-1H-tetrazole-5-ylthio)ethane (BMTTE) was investigated using different synthetic methods. Four compounds have been obtained as single crystals: two pseudopolymorphic 1D Cu(II) coordination polymers with the ligand BMTTM, a 2D Cu(II) coordination polymer and a discrete Cu(I) tetramer with the BMTTE ligand. The effects of the weak interactions on the crystal packing and the Hirshfeld surfaces of the structures were analyzed to clarify the nature of the intermolecular interactions.

Analysis of the contribution of the π-acidity of the s-tetrazine ring in the crystal packing of coordination polymers

CrystEngComm ◽  
2013 ◽  
Vol 15 (15) ◽  
pp. 3031 ◽  
Author(s):  
Piya Seth ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
Chiara Massera ◽  
Patrick Gamez ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Crystal Packing

scholarly journals Neutral and Cationic Chelidonate Coordination Polymers with N,N’-Bridging Ligands

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 256-268
Author(s):  
Rosa Carballo ◽  
Ana Belén Lago ◽  
Arantxa Pino-Cuevas ◽  
Olaya Gómez-Paz ◽  
Nuria Fernández-Hermida ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dicarboxylic Acid ◽  
Single Crystals ◽  
Coordination Sphere ◽  
Coordination Polymers ◽  
Crystal Packing ◽  
Water Molecules ◽  
Bridging Ligands ◽  
Bridging Ligand

The biomolecule chelidonic acid (H2chel, 4-oxo-4H-pyran-2,6-dicarboxylic acid) has been used to build new coordination polymers with the bridging N,N’-ligands 4,4′-bipyridine (4,4-bipy) and 1,2-bis(4-pyridyl)ethane (bpe). Four compounds have been obtained as single crystals: 1D cationic coordination polymers [M(4,4-bipy)(OH2)4]2+ with chelidonate anions and water molecules in the second coordination sphere in 1∞[Zn(4,4-bipy)(H2O)4]chel·3H2O (2) and in the two pseudopolymorphic 1∞[Cu(4,4-bipy)(H2O)4]chel·nH2O (n = 3, 4a; n = 6, 4b), and the 2D neutral coordination polymers 2∞[Zn(chel)(4,4-bipy)(H2O)]·2H2O (1) and 2∞[Zn(chel)(bpe)(H2O)]·H2O (3) where the chelidonate anion acts as a bridging ligand. The effects of the hydrogen bonds on the crystal packing were analyzed. The role of the water molecules hosted within the crystals lattices was also studied.

The low-resolution 3D-structure of porin, a channel-forming protein in E. coliouter membranes

1983 ◽  
Vol 41 ◽  
pp. 440-441
Author(s):  
A. Engel ◽  
D.L. Dorset ◽  
A. Massalski ◽  
J.P. Rosenbusch
Keyword(s):  
Crystal Packing ◽  
3D Structure ◽  
Gram Negative Bacteria ◽  
Protein Ratio ◽  
Crystal Forms ◽  
Large Molecules ◽  
Functional Studies ◽  
Voltage Dependent ◽  
Planar Membranes ◽  
Hexagonal Arrays

Porins represent a group of channel forming proteins that facilitate diffusion of small solutes across the outer membrane of Gram-negative bacteria, while excluding large molecules (>650 Da). Planar membranes reconstituted from purified matrix porin (OmpF protein) trimers and phospholipids have allowed quantitative functional studies of the voltage-dependent channels and revealed concerted activation of triplets. Under the same reconstitution conditions but using high protein concentrations porin aggregated to 2D lattices suitable for electron microscopy and image processing. Depending on the lipid-to- protein ratio three different crystal packing arrangements were observed: a large (a = 93 Å) and a small (a = 79 Å) hexagonal and a rectangular (a = 79 Å b = 139 Å) form with p3 symmetry for the hexagonal arrays. In all crystal forms distinct stain filled triplet indentations could be seen and were found to be morphologically identical within a resolution of (22 Å). It is tempting to correlate stain triplets with triple channels, but the proof of this hypothesis requires an analysis of the structure in 3 dimensions.

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