Self-assembly of a lacunary α-Keggin undecatungstophosphate into a three-dimensional network linked by s-block cations

2002 ◽  
pp. 2896-2897 ◽  
Author(s):  
Noritaka Honma ◽  
Katsuhiro Kusaka ◽  
Tomoji Ozeki
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Dimensional Network

Two- and Three-Dimensional Network of Nanoparticles via Polymer-Mediated Self-Assembly

2012 ◽  
Vol 1 (3) ◽  
pp. 396-399 ◽  
Author(s):  
Mottakin M. Abul Kashem ◽  
Debabrata Patra ◽  
Jan Perlich ◽  
André Rothkirch ◽  
Adeline Buffet ◽  
...  
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Dimensional Network

Structural characterization, gelation ability, and energy-framework analysis of two bis(long-chain ester)-substituted 4,4′-biphenyl compounds

2017 ◽  
Vol 73 (10) ◽  
pp. 791-796 ◽  
Author(s):  
David K. Geiger ◽  
H. Cristina Geiger ◽  
Shawn M. Moore ◽  
William R. Roberts
Keyword(s):  
Self Assembly ◽  
Noncovalent Interactions ◽  
Three Dimensional ◽  
Framework Analysis ◽  
Dimensional Network ◽  
Dispersion Component ◽  
Structure Determinations ◽  
Phenyl Rings ◽  
Alcohol Solvents ◽  
Solid State Structures

There are few examples of single-crystal structure determinations of gelators, as gel formation requires that the dissolved gelator self-assemble into a three-dimensional network structure incorporating solvent via noncovalent interactions rather than self-assembly followed by crystallization. In the solid-state structures of the isostructural compounds 4,4′-bis[5-(methoxycarbonyl)pentyloxy]biphenyl (BBO6-Me), C26H34O6, and 4,4′-bis[5-(ethoxycarbonyl)pentyloxy]biphenyl (BBO6-Et), C28H38O6, the molecules sit on a crystallographically imposed center of symmetry, resulting in strictly coplanar phenyl rings. BBO6-Me behaves as an organogelator in various alcohol solvents, whereas BBO6-Et does not. The extended structure reveals bundles of molecules that form a columnar superstructure. Framework-energy calculations reveal much stronger interaction energies within the columns (−52 to −78 kJ mol−1) than between columns (−2 to −16 kJ mol−1). The intracolumnar interactions are dominated by a dispersion component, whereas the intercolumnar interactions have a substantial electrostatic component.

A novel two-dimensional CuSCN network templated by 2,2′-dimethyl-1,1′-(butane-1,4-diyl)bis(1H-imidazol-3-ium) cations

2013 ◽  
Vol 69 (6) ◽  
pp. 610-612 ◽  
Author(s):  
Shan-Shan Liu ◽  
Shuai Yuan ◽  
Hai-Feng Lu ◽  
Meng-Zhen Xu ◽  
Di Sun
Keyword(s):  
Hydrogen Bonds ◽  
Self Assembly ◽  
Coordination Mode ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Supramolecular Framework ◽  
Tetrahedral Geometry ◽  
Dimensional Network ◽  
End To End

The cation-templated self-assembly of 1,4-bis(2-methyl-1H-imidazol-1-yl)butane (bmimb) with CuSCN gives rise to a novel two-dimensional network, namelycatena-poly[2,2′-dimethyl-1,1′-(butane-1,4-diyl)bis(1H-imidazol-3-ium) [tetra-μ2-thiocyanato-κ4S:S;κ4S:N-dicopper(I)]], {(C12H20N4)[Cu2(NCS)4]}n. The CuIcation is four-coordinated by one N and three S atoms, giving a tetrahedral geometry. One of the two crystallographically independent SCN−anions acts as a μ2-S:Sbridge, binding a pair of CuIcations into a centrosymmetric [Cu2(NCS)2] subunit, which is further extended into a two-dimensional 44-sql net by another kind of SCN−anion with an end-to-end μ2-S:Ncoordination mode. Interestingly, each H2bmimb dication, lying on an inversion centre, threads through one of the windows of the two-dimensional 44-sql net, giving a pseudorotaxane-like structure. The two-dimensional 44-sql networks are packed into the resultant three-dimensional supramolecular framework through bmimb–SCN N—H...N hydrogen bonds.

Nanoscale Permanent Rings in Two- or Three-Dimensional Structure Constructed by the Self-Assembly of Copper(II)-Macrocyclic Complexes and Tetracyanonickelate(II)

2013 ◽  
Vol 699 ◽  
pp. 40-45
Author(s):  
Chee Hun Kwak ◽  
Mee Chang ◽  
Min Chul Chung
Keyword(s):  
Hydrogen Bonding ◽  
Network Structure ◽  
Self Assembly ◽  
Three Dimensional ◽  
Ring Structure ◽  
Dimensional Structure ◽  
Crystalline Solid ◽  
Two Dimensional ◽  
One Dimensional ◽  
Dimensional Network

Self-assembly of polyazamacricyclic complexes of copper(II), [Cu(H2L1]4+, where L1 = 1,8-bis(2-aminoethyl)-1,3,6,8,13-hexaazacyclotetradecane, and [Cu(H2L2)]2+, where L2 = 1,8-bis(4-butylic acid)-1,3,6,8,13-hexaazacyclotetradecane, [Ni(CN)4]2- produces two-dimensional permanent ring structure (1) and three-dimensional network structure (2), respectively, in crystalline solid. The geometry around copper(II) ion is an z-elongated octahedron (1) and square pyramid (2). Inter molecular hydrogen bonding of 1 produces one-dimensional ring chain and 2 produces one-dimensional zig-zag shape coordination polymer. Hydrogen bonding of neighboring chains of 1 produces two-dimensional permanent ring structure with a nanoscale area and that of 2 produces three-dimensional network structure having one-dimensional channels with nanoscale cross-section in crystalline solid.

Topological Correspondence Between Crystal Structure of 2,4,6-Trimethylbenzene-1,3,5-tris(methanaminium) 2,4,6-Trimethylbenzene-1,3,5-triacetate and Cesium Chloride

2000 ◽  
Vol 65 (10) ◽  
pp. 1587-1596 ◽  
Author(s):  
Jaroslav Podlaha ◽  
Ivana Císařová ◽  
Daniel Alexander ◽  
Petr Holý ◽  
Tomáš Kraus ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Self Assembly ◽  
Three Dimensional ◽  
Cesium Chloride ◽  
Dimensional Network ◽  
Network Of Hydrogen Bonds

Solid-state self-assembly of 2,4,6-trimethylbenzene-1,3,5-tris(methanaminium) 2,4,6-trimethylbenzene-1,3,5-triacetate is mediated by hydrogen bonding. It gives rise to three-dimensional network of hydrogen bonds in which each trication is coordinated with eight trianions and vice versa. The resulting crystal structure topologically corresponds to the simple inorganic cesium chloride type.

Self-Assembly of Organo-Sulfur, Selenium and Tellurium Compounds via π-π-Stacking and Hydrogen Bonding Interactions

2002 ◽  
Vol 57 (10) ◽  
pp. 1115-1119 ◽  
Author(s):  
Berthold Kersting
Keyword(s):  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Network Structure ◽  
Self Assembly ◽  
Three Dimensional ◽  
Carbonyl Oxygen ◽  
Selenium Compounds ◽  
Hydrogen Bonding Interactions ◽  
Π Stacking ◽  
Dimensional Network

AbstractThe crystal structures of 2-isopropyl-benzisothiazol-3-one-7-carboxylicacid isopropyl amide and of the corresponding selenium and tellurium derivatives have been determined. In contrast to the sulfur and selenium compounds, the tellurium derivative has an unprecedented three-dimensional network structure held together via π-π stacking and hydrogen bonding interactions. The cavities in the 3D molecular network are filled with guestwater molecules that are hydrogen bonded to carbonyl oxygen atoms.

In vitro and in vivo polysaccharides assembly: ultrastructural and cytochemical study of growing plant cell wall components.

1978 ◽  
Vol 36 (2) ◽  
pp. 434-435
Author(s):  
D. Reis ◽  
B. Vian ◽  
J. C. Roland
Keyword(s):  
Cell Wall ◽  
Self Assembly ◽  
Plant Cell Wall ◽  
Higher Plants ◽  
Three Dimensional ◽  
Cytochemical Study ◽  
Wall Components

Wall morphogenesis in higher plants is a problem still open to controversy. Until now the possibility of a transmembrane control and the involvement of microtubules were mostly envisaged. Self-assembly processes have been observed in the case of walls of Chlamydomonas and bacteria. Spontaneous gelling interactions between xanthan and galactomannan from Ceratonia have been analyzed very recently. The present work provides indications that some processes of spontaneous aggregation could occur in higher plants during the formation and expansion of cell wall.Observations were performed on hypocotyl of mung bean (Phaseolus aureus) for which growth characteristics and wall composition have been previously defined.In situ, the walls of actively growing cells (primary walls) show an ordered three-dimensional organization (fig. 1). The wall is typically polylamellate with multifibrillar layers alternately transverse and longitudinal. Between these layers intermediate strata exist in which the orientation of microfibrils progressively rotates. Thus a progressive change in the morphogenetic activity occurs.

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