Oligomeric Tectonics: Supramolecular Assembly of Double-Stranded Oligobisnorbornene through π-π Stacking

2009 ◽  
Vol 15 (43) ◽  
pp. 11594-11600 ◽  
Author(s):  
Shern-Long Lee ◽  
Nai-Ti Lin ◽  
Wei-Chih Liao ◽  
Chun-hsien Chen ◽  
Hsiao-Ching Yang ◽  
...  
Keyword(s):  
Supramolecular Assembly ◽  
Π Stacking

Influence of N-heteroaromatic π–π stacking on supramolecular assembly and coordination geometry; effect of a single-atom change in the ligand

2015 ◽  
Vol 44 (12) ◽  
pp. 5488-5502 ◽  
Author(s):  
Hamid Reza Khavasi ◽  
Bahareh Mir Mohammad Sadegh
Keyword(s):  
Coordination Compounds ◽  
Crystal Packing ◽  
Supramolecular Assembly ◽  
Single Atom ◽  
Coordination Geometry ◽  
Geometry Effect ◽  
Π Interactions ◽  
Π Stacking ◽  
Nitrogen Heteroatom ◽  
Aromatic Systems

A study on how the polarization of aromatic systems, through the introduction of a nitrogen heteroatom, affects the π–π interactions and crystal packing of mercury coordination compounds.

Strong circularly polarized luminescence induced from chiral supramolecular assembly of helical nanorods

2017 ◽  
Vol 53 (54) ◽  
pp. 7505-7508 ◽  
Author(s):  
Yuxiang Wang ◽  
Xiaojing Li ◽  
Fei Li ◽  
Wei-Yin Sun ◽  
Chengjian Zhu ◽  
...  
Keyword(s):  
Supramolecular Assembly ◽  
Supramolecular Assemblies ◽  
Stacking Interactions ◽  
Circularly Polarized ◽  
Π Stacking ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Chiral supramolecular assemblies (BNS–BPP) can exhibit circularly polarized luminescence (CPL) via electrostatic and π–π stacking interactions.

scholarly journals Different patterns of supramolecular assembly in constitutionally similar 6-arylimidazo[2,1-b][1,3,4]thiadiazoles

2014 ◽  
Vol 70 (9) ◽  
pp. 920-926 ◽  
Author(s):  
Aletti S. Praveen ◽  
Hemmige S. Yathirajan ◽  
Manpreet Kaur ◽  
Badiadka Narayana ◽  
Eric C. Hosten ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Three Dimensional ◽  
Reaction Times ◽  
Supramolecular Assembly ◽  
Dihedral Angles ◽  
Stacking Interactions ◽  
Aryl Group ◽  
Π Stacking ◽  
Related Compounds ◽  
Centrosymmetric Dimers

Four imidazo[2,1-b][1,3,4]thiadiazoles containing a simply-substituted 6-aryl group have been synthesized by reaction of 2-amino-1,3,4-thiadiazoles with bromoacetylarenes using microwave irradiation and brief reaction times. 6-(2-Chlorophenyl)imidazo[2,1-b][1,3,4]thiadiazole, C10H6ClN3S, (I), 6-(2-chlorophenyl)-2-methylimidazo[2,1-b][1,3,4]thiadiazole, C11H8ClN3S, (II), 6-(3,4-dichlorophenyl)imidazo[2,1-b][1,3,4]thiadiazole, C10H5Cl2N3S, (III), and 6-(4-fluoro-3-methoxyphenyl)-2-methylimidazo[2,1-b][1,3,4]thiadiazole, C12H10FN3OS, (IV), crystallize withZ′ values of 2, 1, 1 and 2 respectively. The molecular skeletons are all nearly planar and the dihedral angles between the imidazole and aryl rings are 1.51 (8) and 7.28 (8)° in (I), 9.65 (7)° in (II), 10.44 (8)° in (III), and 1.05 (8) and 7.21 (8)° in (IV). The molecules in (I) are linked by three independent C—H...N hydrogen bonds to form ribbons containing alternatingR22(8) andR44(18) rings, and these ribbons are linked into a three-dimensional array by three independent π-stacking interactions. Both (II) and (III) contain centrosymmetric dimers formed by π-stacking interactions but hydrogen bonds are absent, and the molecules of (IV) are linked into centrosymmetricR22(8) dimers by C—H...N hydrogen bonds. Comparisons are made with a number of related compounds.

scholarly journals Correction: Influence of N-heteroaromatic π–π stacking on supramolecular assembly and coordination geometry; effect of a single-atom change in the ligand

2015 ◽  
Vol 44 (21) ◽  
pp. 10097-10097
Author(s):  
Hamid Reza Khavasi ◽  
Bahareh Mir Mohammad Sadegh
Keyword(s):  
Supramolecular Assembly ◽  
Single Atom ◽  
Coordination Geometry ◽  
Dalton Trans ◽  
Geometry Effect ◽  
Π Stacking

Correction for ‘Influence of N-heteroaromatic π–π stacking on supramolecular assembly and coordination geometry; effect of a single-atom change in the ligand’ by Hamid Reza Khavasi et al., Dalton Trans., 2015, 44, 5488–5502.

Dichloridobis(1,10-phenanthroline-κ2 N,N′)tungsten(II)

2007 ◽  
Vol 63 (3) ◽  
pp. m859-m861
Author(s):  
Wei Xu ◽  
Jian-Li Lin
Keyword(s):  
Title Compound ◽  
Supramolecular Assembly ◽  
Octahedral Geometry ◽  
Stacking Interactions ◽  
Π Stacking

In the title compound, [WCl2(C12H8N2)2], the W atom has a distorted six-coordinate octahedral geometry. There are some π–π stacking interactions in the structure, which are responsible for the supramolecular assembly.

Fourfold alkyl wrapping of a copper(II) porphyrin thwarts macrocycle π–π stacking in a compact supramolecular package

2020 ◽  
Vol 76 (7) ◽  
pp. 647-654
Author(s):  
Phattananawee Nalaoh ◽  
Sareeya Bureekaew ◽  
Vinich Promarak ◽  
Jonathan S. Lindsey
Keyword(s):  
Supramolecular Assembly ◽  
Free Base ◽  
X Ray Diffraction ◽  
Aryl Group ◽  
X Ray ◽  
The North ◽  
Π Stacking ◽  
Solid Crystal ◽  
The Mean ◽  
Atom Position

Porphyrins are valuable constituents in optoelectronic, catalytic, and other applications, yet control of intermolecular π–π stacking is invariably essential to attain the desired properties. Superstructures built onto the porphyrin, often via meso-aryl groups, can afford facial encumbrance that suppresses π–π stacking, although some molecular designs have provided insufficient facial coverage and many have entailed cumbersome syntheses. In this study, a copper(II) porphyrin bearing four meso substituents, namely, {10,20-bis[2,6-bis(octyloxy)phenyl]-5,15-dibromoporphinato}copper(II), [Cu(C64H82Br2N4O4)], was prepared by metalation of the corresponding free-base porphyrin and was characterized by single-crystal X-ray diffraction. The crystal structure reveals a dihedral angle of 111.1 (2)° for the plane of the meso-aryl group relative to the plane of the porphyrin, with both aryl groups tilted in the same direction. Each of the four octyloxy groups exhibits a gauche conformation for the –OCH2CH2– unit but is extended with four or five anti (–CH2CH2–/H) conformations thereafter, causing each octyl group to span the dimension of the macrocycle. In a global frame of reference where the two Br atoms define the north/south poles and the two aryl groups are at antipodes on the equator, two octyl groups of one aryl unit project over the northern hemisphere (covering pyrroles A and B), whereas those of the other aryl unit project over the southern hemisphere (covering pyrroles C and D). Together, the four octyl groups ensheath the two faces of the porphyrin in a self-wrapped assembly. The closest approach of the Cu atom to an octyl methylene C atom (position 6) is 3.5817 (18) Å, the mean separations of neighboring porphyrin planes are 8.059 (4) and 4.693 (8) Å along the a and c axes, respectively, and the center-to-center distances between the Cu atoms of neighboring porphyrins are 10.2725 (4), 12.2540 (6), and 12.7472 (6) Å along the a, b, and c axes, respectively. The Hirshfeld surface analysis and two-dimensional (2D) fingerprint plots provide information concerning contact interactions in the supramolecular assembly of the solid crystal.

scholarly journals Supramolecular assembly of a phosphole-based moiety into nanostructures dictated by alkynylplatinum(ii) terpyridine complexes through non-covalent Pt⋯Pt and π–π stacking interactions: synthesis, characterization, photophysics and self-assembly behaviors

2017 ◽  
Vol 8 (6) ◽  
pp. 4264-4273 ◽  
Author(s):  
Sammual Yu-Lut Leung ◽  
Sloane Evariste ◽  
Christophe Lescop ◽  
Muriel Hissler ◽  
Vivian Wing-Wah Yam
Keyword(s):  
Self Assembly ◽  
Supramolecular Assembly ◽  
Stacking Interactions ◽  
New Class ◽  
Π Stacking

A new class of platinum(ii) terpyridine complexes with a phosphole-derived bridging alkynyl ligand have been prepared.

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