Supramolecular self-assembly through tellurium···halogen secondary bonds: A hexagonal grid of Te2Cl2 and Te6Cl6 rings in the solid state structure of 1,1,3-trichloro-2,4,5,6-tetrahydro-1H-1λ4-benzo[b]tellurophene

2002 ◽  
Vol 80 (11) ◽  
pp. 1530-1537 ◽  
Author(s):  
Julio Zukerman-Schpector ◽  
Ionel Haiduc ◽  
Robinson L Camillo ◽  
João V Comasseto ◽  
Rodrigo Luiz Oliveira R. Cunha ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
State Structure ◽  
Grid Structure ◽  
Hexagonal Grid ◽  
Secondary Bonds ◽  
Tellurium Tetrachloride ◽  
Related Compounds ◽  
2D Network ◽  
Secondary Bonding

1,1,3-Trichloro-2,4,5,6-tetrahydro-1H-1λ4-benzo[b]tellurophene (a = 8.807(1), b = 14.495(2), c = 9.263(1) Å, β = 110.18(1)°; P21/a, Z= 4, R[F 2 > 2σ(F 2)] = 0.0383), prepared by reacting 1-ethynyl-1-cyclohexanol with tellurium tetrachloride, displays a hexagonal grid structure made of four-membered Te2Cl2 and 12-membered Te6Cl6 rings formed by self-assembly of Cl-Te-Cl rods through Te···Cl secondary bonds into a supramolecular 2D network. The comparison with structurally related compounds reveals that 2D layers can also be formed by similar self-assembly of eight-membered Te4I4 rings alone or in a combination of four-membered Te2I2 with eight-membered Te4I4 rings.Key words: diorganotellurium(IV), supramolecular 2D assembly, self-assembly, secondary bonding.

scholarly journals Synthesis, solid state self-assembly driven by antiparallel π⋯π stacking and {⋯H–C–C–F}2 dimer synthons, and in vitro acetyl cholinesterase inhibition activity of phenoxy pendant isatins

RSC Advances ◽  
2022 ◽  
Vol 12 (3) ◽  
pp. 1788-1796
Author(s):  
Saba Mehreen ◽  
Aman Ullah ◽  
Humaira Nadeem ◽  
Necmi Dege ◽  
Muhammad Moazzam Naseer
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Cholinesterase Inhibition ◽  
Inhibition Activity ◽  
State Structure ◽  
Acetyl Cholinesterase ◽  
Solid State Structure ◽  
Π Stacking ◽  
Self Assembled

The phenoxy pendant isatins were observed to be highly potent inhibitors of acetylcholinesterase. In addition, the solid-state structure of a phenoxy pendant isatin showed an intriguing 1D-supramolecular self-assembled structure.

Self-Assembly of a Charge-Neutral Molecular Square

2004 ◽  
Vol 57 (5) ◽  
pp. 409 ◽  
Author(s):  
Mohammad Akbar Ali ◽  
Paul V. Bernhardt ◽  
Chong Lee Kiem ◽  
Aminul Huq Mirza
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Self Assembly ◽  
1H Nmr Spectroscopy ◽  
The Self ◽  
State Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
A Charge ◽  
Molecular Square

Complexation of cadmium(II) by the ditopic (bis-tridentate) thiocarbazone ligand 1,5-bis(6-methyl-2-pyridyl- methylene)thiocarbonohydrazide, H2L1, results in the self-assembly of a charge-neutral 2 × 2 molecular grid, [Cd4(L1)4], comprising four metals and four ligands in an interlocked cyclic array. The solid-state structure of this tetramer has been established by X-ray crystallography and in solution by 1H NMR spectroscopy. The presence of lower molecular weight oligomers was identified by both NMR and ESI-MS.

Synthesis and Solid-State Structure of Tetrabutylammonium Imidazolate-Dipyrrole Formed by Self Assembly

2009 ◽  
Vol 2009 (11) ◽  
pp. 1687-1690 ◽  
Author(s):  
Manfred T. Reetz ◽  
H. Martin Herzog ◽  
Richard Goddard
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
State Structure ◽  
Solid State Structure

scholarly journals Self-assembly of supermolecular species directed by hydrogen bonding and aromatic π–π stacking interactions

2018 ◽  
Vol 33 (2) ◽  
pp. 13
Author(s):  
X. H. Li ◽  
A. F. Jalbout ◽  
W. D. Xiang
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Weak Interactions ◽  
State Structure ◽  
X Ray Diffraction ◽  
Solid State Structure ◽  
X Ray ◽  
Supramolecular Architectures ◽  
Π Stacking ◽  
Π Stacking Interaction

A new Cu(II) trimers, [Cu3(dcp)2(H2O)8]. 4DMF, with the ligand 3,5-pyrazoledicarboxylic acid monohydrate (H3dcp) has been prepared by solvent method. Its solid-state structure has been characterized by elemental analysis, thermal analysis (TGA and DSC), and single crystal X-ray diffraction. X-ray crystallographic studies reveal that this complex has extended 1-D,2-D and 3-D supramolecular architectures directed by weak interactions (hydrogen bond and aromatic π-π stacking interaction) leading to a sandwich solid-state structure.

Lone pair–π vs. σ-hole–π interactions in bromine head-containing oxacalix[2]arene[2]triazines

CrystEngComm ◽  
2018 ◽  
Vol 20 (23) ◽  
pp. 3251-3257 ◽  
Author(s):  
Muhammad Moazzam Naseer ◽  
Antonio Bauzá ◽  
Hazem Alnasr ◽  
Klaus Jurkschat ◽  
Antonio Frontera
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Lone Pair ◽  
State Structure ◽  
Solid State Structure ◽  
Π Interactions ◽  
Supramolecular Chain

New bromine head-containing oxacalix[2]arene[2]triazines were synthesized. Owing to the bromine head and complementary V-shaped cavity, the solid state structure showed an intriguing and unique 1D-supramolecular chain-like self-assembly.

Synthesis and Physical Properties of Self-Orienting Head-To-Tail Polythiophenes.

1993 ◽  
Vol 328 ◽  
Author(s):  
Richard D. McCullough ◽  
Shawn P. Williams ◽  
Manikandan Jayaraman ◽  
Jerry Reddinger ◽  
Lynnette Miller ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Conjugated Polymers ◽  
Electrochemical Properties ◽  
Self Assembly ◽  
Structure Property ◽  
State Structure ◽  
Orbital Interactions ◽  
Structure Property Relationships ◽  
Designed Synthesis

ABSTRACTDesigned synthesis and architectural assembly of head-to-tail polythiophene derivatives provide the ability to control π orbital topology and orbital interactions in conjugated polymers. The preparation of polythiophene derivatives with essentially 100% head-to tail (HT) couplings leads to defect free polythiophenes. These new HT polythiophenes can undergo macromolecular self-assembly to give self-oriented conducting polymers. Study of these materials has led to new insights on structure-property relationships in this class of Materials. In addition, these results show that the molecular orbital overlap, the band dimensionality, and the solid state structure are quite sensitive to the nature of the side chains attached to the polymer's backbone. In addition, we have now synthesized the first heteroatom functionalized HT polythiophenes. These polythiophene derivatives can bind cations, and ion recognition can be used to tune conjugation lengths and properties in polythiophenes. Also presented are a class of random HT coupled 3-alkylthiophenes whose optical and electrochemical properties and possibly electronic properties can be altered by recipe.

The structure of [Cu(bipy)3][Cu(bipy)(ala)(ClO4)2]ClO4 � a Compound with Two Different Coordination Modes in the same Complex

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Mircea Braban ◽  
Ionel Haiduc
Keyword(s):  
Solid State ◽  
Chelate Ring ◽  
Octahedral Complex ◽  
State Structure ◽  
Complex Species ◽  
Solid State Structure ◽  
Coordination Modes ◽  
Coordination Center ◽  
Self Assembled ◽  
Chelate Rings

The paper describes the solid state structure of a compound of composition [Cu(bipy)3][Cu(bipy)(ala) (ClO4)2]ClO4, in which both the cation and anion are octahedral complex species with copper(II) as coordination center. The cation contains three chelate rings formed by bipy; the anion contains in the quatorial plane a CuONC2 chelate ring formed by the alaninato ligand and a CuN2C2 chelate ring formed by bipy, with two monodentate perchorato ligands in axial positions completing the six-coordination. In the crystal p-p stackings lead to a supramolecular self-assembled structure.

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