Self-assembly of diorganotin(IV) 2-{[(E)-1-(2-oxyaryl)alkylidene]amino}acetates: An investigation of structures by X-ray diffraction, solution and solid-state tin NMR, and electrospray ionization MS

2005 ◽  
Vol 690 (12) ◽  
pp. 3080-3094 ◽  
Author(s):  
Tushar S. Basu Baul ◽  
Cheerfulman Masharing ◽  
Rudolph Willem ◽  
Monique Biesemans ◽  
Michal Holčapek ◽  
...  
Keyword(s):  
Solid State ◽  
Electrospray Ionization ◽  
Self Assembly ◽  
X Ray Diffraction ◽  
X Ray

Two new isostructural mercury(II) complexes involving the N-heterocyclic 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole ligand: syntheses, structures and properties

2017 ◽  
Vol 73 (4) ◽  
pp. 314-318 ◽  
Author(s):  
Xu Wei ◽  
Jian-Hua Li ◽  
Qiu-Ying Huang ◽  
Xiang-Ru Meng
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Ir Spectra ◽  
Self Assembly ◽  
Three Dimensional ◽  
The Self ◽  
X Ray Diffraction ◽  
X Ray ◽  
Heterocyclic Ligand ◽  
Structures And Properties

The unsymmetrical N-heterocyclic ligand 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole (bmi) has three potential N-atom donors and can act in monodentate or bridging coordination modes in the construction of complexes. In addition, the bmi ligand can adopt different coordination conformations, resulting in complexes with different structures due to the presence of the flexible methylene spacer. Two new complexes, namely bis{1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole-κN3}dibromidomercury(II), [HgBr2(C10H9N5)2], and bis{1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole-κN3}diiodidomercury(II), [HgI2(C10H9N5)2], have been synthesized through the self-assembly of bmi with HgBr2or HgI2. Single-crystal X-ray diffraction shows that both complexes are mononuclear structures, in which the bmi ligands coordinate to the HgIIions in monodentate modes. In the solid state, both complexes display three-dimensional networks formed by a combination of hydrogen bonds and π–π interactions. The IR spectra and PXRD patterns of both complexes have also been recorded.

Fibril formation through self-assembly of a simple glycine derivative and X-ray diffraction study

2020 ◽  
Vol 235 (1-2) ◽  
pp. 47-51
Author(s):  
Arpita Dutta ◽  
Suven Das ◽  
Purak Das ◽  
Suvendu Maity ◽  
Prasanta Ghosh
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
High Resolution ◽  
Diffraction Study ◽  
Self Assembly ◽  
Van Der Waals Interactions ◽  
Base Catalyst ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sheet Structure

AbstractN-(N-benzoyl glycinyl)-N,N′-dicyclohexylurea was synthesised by conjugating N-benzoyl glycine and dicyclohexylcarbodiimide (DCC) using triethylamine as base catalyst. A single crystal X-ray diffraction study reveals that the compound self-assembles into a supramolecular sheet structure by intermolecular N–H · · · O, C–H · · · O hydrogen bonding and non-bonding van der Waals interactions. A high resolution transmission electronic microscopic (HR-TEM) image of the compound exhibits formation of fibrils in the solid state.

scholarly journals Halogenated Diazabutadiene Dyes: Synthesis, Structures, Supramolecular Features, and Theoretical Studies

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5013
Author(s):  
Valentine G. Nenajdenko ◽  
Namiq G. Shikhaliyev ◽  
Abel M. Maharramov ◽  
Khanim N. Bagirova ◽  
Gulnar T. Suleymanova ◽  
...  
Keyword(s):  
Solid State ◽  
Self Assembly ◽  
Topological Analysis ◽  
Halogen Bonding ◽  
Fine Tuning ◽  
Theoretical Studies ◽  
X Ray Diffraction ◽  
1H And 13C Nmr ◽  
X Ray ◽  
Nmr Techniques

Novel halogenated aromatic dichlorodiazadienes were prepared via copper-mediated oxidative coupling between the corresponding hydrazones and CCl4. These rare azo-dyes were characterized using 1H and 13C NMR techniques and X-ray diffraction analysis for five halogenated dichlorodiazadienes. Multiple non-covalent halogen···halogen interactions were detected in the solid state and studied by DFT calculations and topological analysis of the electron density distribution within the framework of Bader’s theory (QTAIM method). Theoretical studies demonstrated that non-covalent halogen···halogen interactions play crucial role in self-assembly of highly polarizable dichlorodiazadienes. Thus, halogen bonding can dictate a packing preference in the solid state for this class of dichloro-substituted heterodienes, which could be a convenient tool for a fine tuning of the properties of this novel class of dyes.

Solid state self-assembly and morphology of a rigid non-coded γ-amino acid inserted tripeptide

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Arpita Dutta ◽  
Suven Das ◽  
Purak Das ◽  
Suvendu Maity ◽  
Prasanta Ghosh
Keyword(s):  
Amino Acid ◽  
Solid State ◽  
Self Assembly ◽  
Intermolecular Hydrogen Bonding ◽  
Aminobenzoic Acid ◽  
Hydrogen Bonding Interaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Intermolecular Hydrogen Bonding Interaction ◽  
Bonding Interaction

Abstract A tripeptide Boc-L-Pro-m-ABA-Aib-OMe was synthesized where meta-aminobenzoic acid (m-ABA), a rigid non-coded γ-amino acid is placed as middle residue. Single crystal X-ray diffraction study indicates that the peptide self-assembles into helical motif through intermolecular hydrogen bonding interaction N–H···O, C–H···O, π···π interaction and van der Waals interaction. HR-TEM image reveals the formation of fibril in the solid state.

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.

scholarly journals Mixed valence mono- and hetero-metallic grid catenanes

2015 ◽  
Vol 6 (10) ◽  
pp. 5712-5718 ◽  
Author(s):  
Chandan Giri ◽  
Filip Topić ◽  
Massimo Cametti ◽  
Kari Rissanen
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Self Assembly ◽  
Mixed Valence ◽  
X Ray Diffraction ◽  
X Ray

Multicomponent self-assembly was employed to obtain, in the solid state, a series of mixed valence mono- and hetero-metallic grid catenanes, which were characterized by single crystal X-ray diffraction.

The Collagenic Molecular Structural Unit of Solid State Complexes

1971 ◽  
Vol 29 ◽  
pp. 478-479
Author(s):  
Kenneth M. Richter ◽  
John A. Schilling
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Structural Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naoh Treatment

The structural unit of solid state collagen complexes has been reported by Porter and Vanamee via EM and by Cowan, North and Randall via x-ray diffraction to be an ellipsoidal unit of 210-270 A. length by 50-100 A. diameter. It subsequently was independently demonstrated by us in dog tendon, dermis, and induced complexes. Its detailed morphologic, dimensional and molecular weight (MW) aspects have now been determined. It is pear-shaped in long profile with m diameters of 57 and 108 A. and m length of 263 A. (Fig. 1, tendon, KMnO4 fixation, Na-tungstate; Fig. 2a, schematic of unit in long, C, and x-sectional profiles of its thin, xB, and bulbous, xA portions; Fig. 2b, tendon essentially unmodified by ether and 0.4 N NaOH treatment, Na-tungstate). The unit consists of a uniquely coild cable, c, of ṁ 22.9 A. diameter and length of 2580-3316 A. The cable consists of three 2nd-strands, s, each of m 10.6 A.

TEM studies of solid-state reactions in sputter-deposited Nb/Al multilayer thin films

1996 ◽  
Vol 54 ◽  
pp. 1020-1021
Author(s):  
F. Ma ◽  
S. Vivekanand ◽  
K. Barmak ◽  
C. Michaelsen
Keyword(s):  
Thin Films ◽  
Solid State ◽  
Stoichiometric Composition ◽  
Analytical Electron Microscopy ◽  
Grain Structure ◽  
Solid State Reactions ◽  
Multilayer Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sputter Deposited

Solid state reactions in sputter-deposited Nb/Al multilayer thin films have been studied by transmission and analytical electron microscopy (TEM/AEM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The Nb/Al multilayer thin films for TEM studies were sputter-deposited on (1102)sapphire substrates. The periodicity of the films is in the range 10-500 nm. The overall composition of the films are 1/3, 2/1, and 3/1 Nb/Al, corresponding to the stoichiometric composition of the three intermetallic phases in this system.Figure 1 is a TEM micrograph of an as-deposited film with periodicity A = dA1 + dNb = 72 nm, where d's are layer thicknesses. The polycrystalline nature of the Al and Nb layers with their columnar grain structure is evident in the figure. Both Nb and Al layers exhibit crystallographic texture, with the electron diffraction pattern for this film showing stronger diffraction spots in the direction normal to the multilayer. The X-ray diffraction patterns of all films are dominated by the Al(l 11) and Nb(l 10) peaks and show a merging of these two peaks with decreasing periodicity.

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