Journal ArticleDOI
Reversible Multielectron Release from Redox-Active Three-Dimensional Molecular Barrels with Ruthenium-Alkenyl Moieties.
Rajorshi Das,Michael Linseis,Stefanie Scheerer,Katrin Zoller,Laura Senft,Ivana Ivanović-Burmazović,Rainer F. Winter +6 more
TLDR
In this paper , the shape of twisted trigonal prisms was used to synthesize three-dimensional molecular barrels with high yields from dinuclear ruthenium-vinyl clamps and tritopic triphenylamine-derived carboxylate linkers and characterized by multinuclear NMR spectroscopy including 1H-1H COSY and 1H DOSY measurements.Abstract:
Three-dimensional molecular barrels Ru6-4 and Ru6-5 were synthesized in high yields from dinuclear ruthenium-vinyl clamps and tritopic triphenylamine-derived carboxylate linkers and characterized by multinuclear NMR spectroscopy including 1H-1H COSY and 1H DOSY measurements, high-resolution electrospray ionization mass spectrometry, and X-ray crystallography. The metal frameworks of the cages adopt the shape of twisted trigonal prisms, and they crystallize as racemic mixtures of interdigitating Δ- and Λ-enantiomers with a tight columnar packing in Ru6-4. Electrochemical studies and redox titrations revealed that the cages are able to release up to 11 electrons on the voltammetric timescale and that their cage structures persist up to the hexacation level. IR and UV-vis-near-infrared spectroelectrochemical studies confirm substituent-dependent intramolecular electronic communication within the π-conjugated 1,3-divinylphenylene backbone in the tricationic states, where all three divinylphenylene-bridged diruthenium clamps are present in mixed-valent radical cation states. The formation of 1:3 charge-transfer salts with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane as the electron acceptor is also demonstrated.read more
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Organic binary charge-transfer compounds of 2,2′ : 6′,2′′ : 6′′,6-trioxotriphenylamine and a pyrene-annulated azaacene as donors
Rajorshi Das,Michael Linseis,Stefan M. Schupp,Franciska S. Gogesch,Lukas Schmidt-Mende,Rainer F. Winter +5 more
TL;DR: In this paper , the identity of three binary charge transfer (CT) compounds resulting from the donor 2,2′,: 6′, 2′′, 6-trioxotriphenylamine (TOTA) and the acceptors F4TCNQ and F4BQ and of a pyrene-annulated azaacene (PAA) with the acceptor F4 TCNQ are reported.
References
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Crystal structure refinement with SHELXL
TL;DR: New features added to the refinement program SHELXL since 2008 are described and explained.
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OLEX2: a complete structure solution, refinement and analysis program
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The Chemistry and Applications of Metal-Organic Frameworks
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TL;DR: Metal-organic frameworks are porous materials that have potential for applications such as gas storage and separation, as well as catalysis, and methods are being developed for making nanocrystals and supercrystals of MOFs for their incorporation into devices.
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Reticular synthesis and the design of new materials
Omar M. Yaghi,Michael O'Keeffe,Nathan W. Ockwig,Hee K. Chae,Hee K. Chae,Mohamed Eddaoudi,Jaheon Kim +6 more
TL;DR: This work has shown that highly porous frameworks held together by strong metal–oxygen–carbon bonds and with exceptionally large surface area and capacity for gas storage have been prepared and their pore metrics systematically varied and functionalized.
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Mercury CSD 2.0 – new features for the visualization and investigation of crystal structures
Clare F. Macrae,Ian J. Bruno,James A. Chisholm,Paul R. Edgington,Patrick McCabe,Elna Pidcock,Lucia Rodriguez-Monge,Robin Taylor,Jacco van de Streek,Peter A. Wood +9 more
TL;DR: Mercury as discussed by the authors is a crystal structure visualization tool that allows highly customizable searching of structural databases for intermolecular interaction motifs and packing patterns, as well as the ability to perform packing similarity calculations between structures containing the same compound.