1,3,6,8-Tetraazapyrenes: Synthesis, Solid-State Structures, and Properties as Redox-Active Materials

2012 ◽  
Vol 77 (14) ◽  
pp. 6107-6116 ◽  
Author(s):  
Sonja Geib ◽  
Susanne C. Martens ◽  
Ute Zschieschang ◽  
Florian Lombeck ◽  
Hubert Wadepohl ◽  
...  
Keyword(s):  
Solid State ◽  
Active Materials ◽  
Redox Active ◽  
Structures And Properties ◽  
Solid State Structures

scholarly journals Structural behavior of organic zeolites on guest sorption/desorption

2014 ◽  
Vol 70 (a1) ◽  
pp. C660-C660
Author(s):  
Janusz Lipkowski ◽  
Iwona Justyniak
Keyword(s):  
Solid State ◽  
Supramolecular Materials ◽  
Large Structures ◽  
Guest Species ◽  
Structures And Properties ◽  
Organic Zeolite ◽  
And Control ◽  
Solid State Structures ◽  
Organic Zeolites ◽  
Host Component

The term organic zeolites, originally has been introduced to chemical literature by R.M. Barrer, to describe molecular crystals having open porous structures, able to reversibly absorb and desorb organic species with relatively weak, if any, sorption of water or other hydrophilic molecules. A characteristic feature of the organic zeolite structures, when compared to classical `inorganic' zeolites based on aluminosilicates, is the relatively weak intermolecular bonding within the host component. This is the reason for significant flexibility of the host crystal structure which changes its parameters upon guest absorption, desorption or exchange. The most characteristic property in this respect is absorption with `adsorbate generated sorption sites' which is the basis for design and control of selectivity and efficiency of sorption-desorption processes. In general, organic zeolite behavior may be observed on a large variety of supramolecular materials, including solvates of macrocyclic compounds and in the very important, so-called- MOFs. In the paper solvation of cyclodextrins and their complexes will be used as the convenient example, based on brand new, mostly yet unpublished large structures of heavily solvated cyclodextrin complexes in the solid state. Cyclodextrins are commonly known as materials having intra-molecular cavity able to accommodate guest species. This property, when combined with sorption in the inter-molecular space in the solid state structures of CDs leads to very interesting structures and properties. In general, such behavior may be observed only when CD moieties are at equilibrium with a solution of the respective guest and solvent species. The equilibria are quite sensitive to minor changes of solution chemical composition what may be observed microscopically as morphology changes of the crystalline phases. This phenomenon will be illustrated with short movies demonstrating crystal behavior on change of its environment. Novel x-ray structures will also be demonstrated and commented. This work was supported by grant POIG.01.01.02-14-102/09.

Basket-shaped quinacridone cyclophanes: synthesis, solid-state structures, and properties

2010 ◽  
Vol 34 (10) ◽  
pp. 2213 ◽  
Author(s):  
Dingyi Yu ◽  
Tai Peng ◽  
Hongyu Zhang ◽  
Hai Bi ◽  
Jingying Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Structures And Properties ◽  
Solid State Structures

scholarly journals Solid state structures and properties of free-base 5,10,15-triphenylcorrole (TPCor) anions obtained by deprotonation and reduction. Effective magnetic coupling of spins in (Cp*2Cr+)(H+)(H2TPCor˙2−)·C6H4Cl2

2017 ◽  
Vol 46 (40) ◽  
pp. 13994-14001 ◽  
Author(s):  
Dmitri V. Konarev ◽  
Dmitri R. Karimov ◽  
Salavat S. Khasanov ◽  
Alexander F. Shestakov ◽  
Akihiro Otsuka ◽  
...  
Keyword(s):  
Solid State ◽  
High Spin ◽  
Spin State ◽  
Magnetic Coupling ◽  
Antiferromagnetic Coupling ◽  
Free Base ◽  
Structures And Properties ◽  
Planar Shape ◽  
Solid State Structures

The structures and properties of free-base triphenylcorrole radical H2TPCor˙2− dianions and diamagnetic deprotonated H2TPCor− anions have been studied. In both cases, deprotonation provides a planar shape of the corrole macrocycle. High-spin Cp*2Cr+ (S = 3/2) and H2TPCor˙2− with the S = 1/2 spin state alternate in the π-stacks providing effective antiferromagnetic coupling of spins.

Dithiazolodithiazolyl Radicals:  Substituent Effects on Solid State Structures and Properties

2004 ◽  
Vol 16 (8) ◽  
pp. 1564-1572 ◽  
Author(s):  
Leanne Beer ◽  
James F. Britten ◽  
Owen P. Clements ◽  
Robert C. Haddon ◽  
Mikhail E. Itkis ◽  
...  
Keyword(s):  
Solid State ◽  
Substituent Effects ◽  
Structures And Properties ◽  
Solid State Structures
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