Journal ArticleDOI
From Molecules to Interactions to Crystal Engineering: Mechanical Properties of Organic Solids.
TLDR
This Account describes efforts at focusing down into mechanical properties of organic molecular crystals from the viewpoint of crystal engineering, which is the synthesis and design of functional molecular solids and presents examples where complex properties may be deliberately turned on or off in organic crystals.Abstract:
ConspectusMechanical properties of organic molecular crystals have been noted and studied over the years but the complexity of the subject and its relationship with diverse fields such as mechanochemistry, phase transformations, polymorphism, and chemical, mechanical, and materials engineering have slowed understanding. Any such understanding also needs conceptual advances—sophisticated instrumentation, computational modeling, and chemical insight—lack of such synergy has surely hindered progress in this important field. This Account describes our efforts at focusing down into this interesting subject from the viewpoint of crystal engineering, which is the synthesis and design of functional molecular solids. Mechanical properties of soft molecular crystals imply molecular movement within the solid; the type of property depends on the likelihood of such movement in relation to the applied stress, including the ability of molecules to restore themselves to their original positions when the stress is removed...read more
Citations
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The mechanism of bending in a plastically flexible crystal.
Subhrajyoti Bhandary,Amy J. Thompson,John C. McMurtrie,Jack K. Clegg,Peuli Ghosh,S. R. N. Kiran Mangalampalli,Satoshi Takamizawa,Deepak Chopra +7 more
TL;DR: The mechanism of plastic deformation in single crystals of a small organic molecule (N-(4-ethynylphenyl)-3-fluoro-4-(trifluoromethyl)benzamide) that can be repeatedly irreversibly bent and returned to its original shape without concomitant delamination or loss of integrity is reported.
Journal ArticleDOI
Thermosalience in Macrocycle-Based Soft Crystals via Anisotropic Deformation of Disilanyl Architecture.
Kenichiro Omoto,Kenichiro Omoto,Toyotaka Nakae,Masaki Nishio,Yoshinori Yamanoi,Hidetaka Kasai,Eiji Nishibori,Takaki Mashimo,Tomohiro Seki,Hajime Ito,Kazuki Nakamura,Norihisa Kobayashi,Naofumi Nakayama,Hitoshi Goto,Hiroshi Nishihara +14 more
TL;DR: This work explores a new area of organosilicon chemistry, and presents a potential utility of disilanyl macrocycle C4 possessing four p-phenylenes circularly connected by four flexible disilane bonds as soft crystals.
Journal ArticleDOI
Functional flexible molecular crystals: intrinsic and mechanoresponsive properties
TL;DR: In this article, the concept of functional flexible molecular crystals is highlighted, demonstrating the intrinsic properties of mechanical deformability and mechano-responsiveness induced by changes in crystal shape, and key insight into similar future developments that offer intrinsic and mechanical stimuli-responsive behavior toward flexible molecular crystal devices is also provided.
Journal ArticleDOI
Metal-involving halogen bond Ar–I⋯[dz2PtII] in a platinum acetylacetonate complex
Anton V. Rozhkov,Daniil M. Ivanov,Alexander S. Novikov,Ivan V. Ananyev,Nadezhda A. Bokach,Vadim Yu. Kukushkin,Vadim Yu. Kukushkin +6 more
TL;DR: In this article, a combined XRD and theoretical study for two adducts, [Pt(acac)2]·2(1,3,5-FIB), reveals that differences in the type formed halogen bond (XB) depend on the identity of the metal center.
References
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Journal ArticleDOI
Photodimerization in the solid state
TL;DR: In this article, a review of solid-state photochemistry can be found under four parallel headings: first, analysis of the topochemical postulate according to which the course of the solid state reaction and the stereochemistry of the photodimer (if any) can be predicted from the configuration and nearest-neighbour geometry of closest monomer molecules in the crystal lattice; secondly, the study of the lOCUS of the reaction, that is the dependence of the course or (dimerization, cis trans isomerization) on crystal texture (dislocation
Journal ArticleDOI
Isostructurality, Polymorphism and Mechanical Properties of Some Hexahalogenated Benzenes: The Nature of Halogen⋅⋅⋅Halogen Interactions
C. Malla Reddy,Michael T. Kirchner,Ravi C. Gundakaram,K. Anantha Padmanabhan,Gautam R. Desiraju +4 more
TL;DR: Both chemical and geometrical models need to be considered for X...X interactions in hexahalogenated benzenes, where nonspecificity of the weak interlayer interactions here is demonstrated by the structure of twinned crystals of these compounds.
Journal ArticleDOI
Mechanochemical preparation of co-crystals
TL;DR: The preparation of co-crystals via mechanochemistry combines the quest for clean and green processes with the investigation of multicomponent new materials, among the currently most fashionable systems in the crystal engineering field.
Journal ArticleDOI
Mechanochemistry: the varied applications of mechanical bond-breaking
TL;DR: In this paper, a wide range of practical applications of mechanochemistry are outlined with typical examples for ceramics, mechanical alloying, hydrogen storage, organic syntheses, waste remediation, leachings, surface plasmas, radical formation, explosives, nanotube formation, nanoparticles grafting, polymer technology, radical initiation, scratchless polishing, wear protection, lubrication, mechanochromism, nano-dissection, and many more.
Journal ArticleDOI
Elastic and bendable caffeine cocrystals: implications for the design of flexible organic materials.
Soumyajit Ghosh,C. Malla Reddy +1 more
TL;DR: A remarkably flexible, elastically bendable cocrystal solvate 1 is reported, formed from caffeine, 4-chloro-3-nitrobenzoic acid, and methanol in a 1:1:< 1 ratio (Figure 1).
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Elastic and bendable caffeine cocrystals: implications for the design of flexible organic materials.
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