Search results for "Catenane"

showing 3 items of 43 documents

ChemInform Abstract: Rotaxanes and Catenanes Derived from Tetra-Urea Calix[4]arenes

2011

chemistry.chemical_compoundbiologyChemistryPolymer chemistryCatenaneUreaTetraGeneral Medicinebiology.organism_classificationChemInform
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ChemInform Abstract: Tropylium Cation Capsule of Hydrogen-Bonded Tetraurea Calix[4]arene Dimers.

2010

chemistry.chemical_compoundchemistryHydrogenTropylium cationDendrimerPolymer chemistryCalixareneCatenaneCapsulechemistry.chemical_elementGeneral MedicineChemInform
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A new 3-D polymeric spin transition compound: [tris(1,4-bis(tetrazol-1-yl)butane-N1,N 1′)iron(II)] bis(perchlorate)

2001

A series of novel polymeric compounds of formula [M(btzb)3][ClO4]2 (Mll = Fe, Ni or Cu) with btzb = 1,4-bis-(tetrazol-1-yl)butane have been prepared and their physical properties investigated. The btzb ligand has been prepared and its crystal structure determined, together with a tentative crystal structure of the 3-D compound [Fe(btzb)3][ClO4]2. The model of the latter shows two symmetry-related, interpenetrating Fe-btzb networks in which the iron(II) ions approach each other as close as 8.3 and 9.1 A. This supramolecular catenane undergoes a sharp thermal spin transition around 160 K with hysteresis (20 K) along with a pronounced thermochromic effect. The spin crossover behaviour has been…

education.field_of_studyInorganic chemistryCatenanePopulationSpin transitionButaneGeneral ChemistryCrystal structurechemistry.chemical_compoundPerchlorateCrystallographychemistrySpin crossoverMössbauer spectroscopyeducationJournal of the Chemical Society, Dalton Transactions
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