Supramolecular inorganic frameworks: “dynamic” challenges for structural chemistry

2005 ◽  
Vol 220 (4) ◽  
Author(s):  
Leslie J. May ◽  
George K. H. Shimizu
Keyword(s):  
Solid State ◽  
Supramolecular Chemistry ◽  
Building Blocks ◽  
Short Review ◽  
Supramolecular System ◽  
Structural Rearrangements ◽  
Error Checking ◽  
Discrete Structures ◽  
State Coordination ◽  
Programmed Assembly

AbstractThe supramolecular chemistry of discrete assemblies of various topologies (cages, grids, helices, etc.) has been extensively studied. With regards to the supramolecular chemistry of infinite solids, attention is usually focussed on the design of an efficient, programmed assembly motif through the choice of suitable building blocks. However, as well illustrated by the discrete structures, a hallmark property of a supramolecular system is its ability to reversibly assemble to optimize its structure, effectively error checking. For a rigid infinite framework, this feature is less obvious. Error checking is manifested in an extended framework through structural rearrangements in the solid state. Coordination frameworks, as they are often at least partially sustained by weaker interactions, can demonstrate such dynamic behavior in response to some external stimulus. Selected examples, chosen to illustrate a range of network types and rearrangements, will be discussed in this short review.

scholarly journals Mixed-Oxide Catalysts with Spinel Structure for the Valorization of Biomass: The Chemical-Loop Reforming of Bioethanol

Catalysts ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 332 ◽  
Author(s):  
Olena Vozniuk ◽  
Tommaso Tabanelli ◽  
Nathalie Tanchoux ◽  
Jean-Marc Millet ◽  
Stefania Albonetti ◽  
...  
Keyword(s):  
Solid State ◽  
Spinel Structure ◽  
Mixed Oxides ◽  
Building Blocks ◽  
Short Review ◽  
Solid State Chemistry ◽  
Spinel Type ◽  
Mixed Oxide Catalysts ◽  
Versatile Tool ◽  
Review Reports

This short review reports on spinel-type mixed oxides as catalysts for the transformation of biomass-derived building blocks into chemicals and fuel additives. After an overview of the various methods reported in the literature for the synthesis of mixed oxides with spinel structure, the use of this class of materials for the chemical-loop reforming of bioalcohols is reviewed in detail. This reaction is aimed at the production of H2 with intrinsic separation of C-containing products, but also is a very versatile tool for investigating the solid-state chemistry of spinels.

Solid-State Coordination Chemistry of Copper(II) Tetrazolates: Anion Control of Frameworks Constructed from Trinuclear Copper(II) Building Blocks

2009 ◽  
Vol 48 (11) ◽  
pp. 4655-4657 ◽  
Author(s):  
Wayne Ouellette ◽  
Hongxue Liu ◽  
Charles J. O’Connor ◽  
Jon Zubieta
Keyword(s):  
Coordination Chemistry ◽  
Solid State ◽  
Building Blocks ◽  
State Coordination

scholarly journals Core-Substituted Naphthalene-diimides (cNDI) and Related Derivatives: Versatile Scaffold for Supramolecular Assembly and Functional Materials

2021 ◽  
Author(s):  
Anurag Mukherjee ◽  
Suhrit Ghosh
Keyword(s):  
Photophysical Properties ◽  
Supramolecular Assembly ◽  
Functional Materials ◽  
Building Blocks ◽  
Short Review ◽  
Molecular Engineering ◽  
Organic Optoelectronics ◽  
Naphthalene Diimide ◽  
Naphthalene Diimides ◽  
Derivatives Of

Naphthalene-diimide (NDI) derived building blocks have been explored extensively for supramolecular assembly as they exhibit attractive photophysical properties, suitable for applications in organic optoelectronics. Core-substituted derivatives of the NDI chromophore (cNDI) differ significantly from the parent NDI dye in terms of optical and redox properties. Adequate molecular engineering opportunities and substitution-dependent tunable optoelectronic properties make cNDI derivatives highly promising candidates for supramolecular assembly and functional material. This short review discusses recent development in the area of functional supramolecular assemblies based on cNDIs and related molecules.

scholarly journals Fluorinated azobenzenes as supramolecular halogen-bonding building blocks

2019 ◽  
Vol 15 ◽  
pp. 2013-2019 ◽  
Author(s):  
Esther Nieland ◽  
Oliver Weingart ◽  
Bernd M Schmidt
Keyword(s):  
Solid State ◽  
Dft Calculations ◽  
Visible Light ◽  
Half Life ◽  
Photophysical Properties ◽  
Bathochromic Shift ◽  
Halogen Bonding ◽  
Building Blocks ◽  
Partial Overlap

ortho-Fluoroazobenzenes are a remarkable example of bistable photoswitches, addressable by visible light. Symmetrical, highly fluorinated azobenzenes bearing an iodine substituent in para-position were shown to be suitable supramolecular building blocks both in solution and in the solid state in combination with neutral halogen bonding acceptors, such as lutidines. Therefore, we investigate the photochemistry of a series of azobenzene photoswitches. Upon introduction of iodoethynyl groups, the halogen bonding donor properties are significantly strengthened in solution. However, the bathochromic shift of the π→π* band leads to a partial overlap with the n→π* band, making it slightly more difficult to address. The introduction of iodine substituents is furthermore accompanied with a diminishing thermal half-life. A series of three azobenzenes with different halogen bonding donor properties are discussed in relation to their changing photophysical properties, rationalized by DFT calculations.

Gram-Scale Synthesis of Cu(II)@COF via Solid-State Coordination Approach for Catalysis of Alkyne-Dihalomethane-Amine Coupling

2021 ◽  
Author(s):  
Xuan Kan ◽  
Jian-Cheng Wang ◽  
Jing-Lan Kan ◽  
Jin-Yan Shang ◽  
Hua Qiao ◽  
...  
Keyword(s):  
Solid State ◽  
State Coordination ◽  
Amine Coupling

scholarly journals LiMn2O4–y Br y Nanoparticles Synthesized by a Room Temperature Solid-State Coordination Method

2009 ◽  
Vol 4 (4) ◽  
pp. 353-358 ◽  
Author(s):  
Yudai Huang ◽  
Rongrong Jiang ◽  
Shu-Juan Bao ◽  
Yali Cao ◽  
Dianzeng Jia
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
State Coordination

Application of α-Amino Radicals as the Reaction Activators

Synthesis ◽  
2021 ◽  
Author(s):  
Yong-liang Su ◽  
Michael P. Doyle
Keyword(s):  
Halogen Atom ◽  
Building Blocks ◽  
Short Review ◽  
Single Electron ◽  
Radical Species ◽  
Sulfonium Salts ◽  
Radical Intermediates ◽  
Organic Halides

α-Aminoalkyl radicals are easily accessible through multiple pathways from various precursors. Apart from their utilization as N-containing building blocks, they have recently been used as halogen atom abstraction reagents or single-electron reductants to transform organic halides or sulfonium salts to their corresponding highly reactive radical species. Benefiting from the richness of various halides and the diverse reactivity of radical intermediates, new transformations of halides and sulfonium salts have been developed. This short review summarizes this emerging chemistry that uses α-amino radicals as the reaction activators.

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