0000000000425031

AUTHOR

Deepak Asthana

0000-0003-1417-694x

showing 6 related works from this author

Formation of an interlocked double-chain from an organic-inorganic [2]rotaxane.

2019

Here we show that a structure containing a polymeric interlocking daisy chain is obtained from the reaction of an inorganic–organic [2]rotaxane [HB{CrIII7NiII(μ-F)8(O2CtBu)16}], where B is an organic thread terminated with a bi-pyridyl unit, with an oxo-centered metal carboxylate triangle [FeIII2CoII(μ3-O)(O2CtBu)6(HO2CtBu)3].

Rotaxane010405 organic chemistryChemistryMetals and AlloysGeneral Chemistry010402 general chemistry01 natural sciencesCatalysis0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsDouble chainMetalchemistry.chemical_compoundTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITYvisual_artPolymer chemistryOrganic inorganicMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumCarboxylateDaisy chainChemical communications (Cambridge, England)
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A [13]rotaxane assembled via a palladium molecular capsule

2019

Molecules that are the size of small proteins are difficult to make. The most frequently examined route is via self-assembly, and one particular approach involves molecular nanocapsules, where ligands are designed that will enforce the formation of specific polyhedra of metals within the core of the structure. Here we show that this approach can be combined with mechanically interlocking molecules to produce nanocapsules that are decorated on their exterior. This could be a general route to very large molecules, and is exemplified here by the synthesis and structural characterization of a [13]rotaxane, containing 150 metal centres. Small angle X-ray scattering combined with atomistic molecu…

0301 basic medicineMaterials scienceRotaxaneScienceInterlocked moleculesSupramolecular chemistryGeneral Physics and Astronomychemistry.chemical_elementNanotechnology02 engineering and technologyGeneral Biochemistry Genetics and Molecular BiologyNanocapsulesArticleMetal03 medical and health sciencesMolecular dynamicsMoleculelcsh:ScienceMultidisciplinaryMolecular capsulesQGeneral Chemistry021001 nanoscience & nanotechnologyCharacterization (materials science)030104 developmental biologychemistryvisual_artvisual_art.visual_art_mediumlcsh:Q0210 nano-technologyPalladiumNature Communications
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An all-organic steroid–D–π-A modular design drives ferroelectricity in supramolecular solids and nano-architectures at RT

2011

Confluence of a modular design approach and self-assembly with a 'steroid-D-π-A' module generates spontaneous polarization in solids and for the first time in nano-architectures constituted from organogels, at room temperature (RT).

Materials sciencebusiness.industryMolecular ConformationTemperatureMetals and AlloysSupramolecular chemistryNanotechnologyGeneral ChemistryModular designCrystallography X-RayFerroelectricityCatalysisNanostructuresSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsSpontaneous polarizationElectricityNano-Materials ChemistryCeramics and CompositesSteroidsbusinessta116Chemical Communications
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CCDC 1572780: Experimental Crystal Structure Determination

2019

Related Article: Jesús Ferrando-Soria, Antonio Fernandez, Iñigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny|2019|Chem.Commun.|55|2960|doi:10.1039/C8CC09339C

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterscatena-[tetrakis(mu-oxo)-hexakis(mu-N-{[4'-({35-bis[(pyridin-4-yl)ethynyl]benzene-1-carbonyl}oxy)[11'-biphenyl]-4-yl]methyl}-2-phenylethan-1-aminium)-tetracosakis(mu-pivalato)-octa-iron(iii)-tetra-cobalt(ii) hexakis(hexadecakis(mu-pivalato)-octakis(mu-fluoro)-hepta-chromium(iii)-nickel(ii)) unknown solvate]Experimental 3D Coordinates
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CCDC 1860091: Experimental Crystal Structure Determination

2019

Related Article: Jesus Ferrando-Soria, Antonio Fernandez, Deepak Asthana, Selina Nawaz, Iñigo J. Vitorica-Yrezabal, George F. S. Whitehead, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Neil D. Burton, Richard E. P. Winpenny |2019|Nat.Commun.|10|3720|doi:10.1038/s41467-019-11635-6

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersdodecakis(mu-4'-{[(2-phenylethyl)amino]methyl}[11'-biphenyl]-4-yl 35-bis[(pyridin-4-yl)ethynyl]benzoate)-hexa-palladium hexadecakis(pivalato)-octakis(mu-fluoro)-hepta-chromium-nickel acetonitrile unknown solvateExperimental 3D Coordinates
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CCDC 1572781: Experimental Crystal Structure Determination

2019

Related Article: Jesús Ferrando-Soria, Antonio Fernandez, Iñigo J. Vitorica-Yrezabal, Deepak Asthana, Christopher A. Muryn, Floriana Tuna, Grigore A. Timco, Richard E. P. Winpenny|2019|Chem.Commun.|55|2960|doi:10.1039/C8CC09339C

Space GroupCrystallographyCrystal SystemN-[(4'-hydroxy[11'-biphenyl]-4-yl)methyl]-2-phenylethan-1-aminium hexadecakis(mu-pivalato)-octakis(mu-fluoro)-hepta-chromium(iii)-zinc(ii) toluene solvate monohydrateCrystal StructureCell ParametersExperimental 3D Coordinates
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