0000000001299535

AUTHOR

Ulrike Werner-zwanziger

showing 10 related works from this author

A Simple Complex on the Verge of Breakdown: Isolation of the Elusive Cyanoformate Ion

2014

Cyanide Hitches a Ride Cyanide is a by-product of the biosynthesis of ethylene in plants and it has been somewhat puzzling how the ion is safely removed before it can shut down enzymatic pathways by coordination to catalytic iron centers. A proposed mechanism has implicated the cyanoformate ion—essentially, a weak adduct of cyanide and carbon dioxide—as the initial product, although its lifetime was uncertain. Murphy et al. (p. 75 ; see the Perspective by Alabugin and Mohamed ) crystallized this previously elusive adduct and found that its solution-phase stability varies inversely with the dielectric properties of the medium. The results bolster a picture in which the adduct shuttles the cy…

crystal structureEthyleneMagnetic Resonance SpectroscopyFormateskemiallinen sitoutuminenCyanideMineralogykiderakenneMedicinal chemistryIonCatalysisAdductchemistry.chemical_compoundsyanoformaattiX-Ray DiffractionCatalytic DomainNitrilesta116MultidisciplinaryAqueous solutionCyanidesMolecular StructureChemistrychemical bondingCarbon DioxideEthylenesThermodynamicsAmino Acid OxidoreductasescyanofrmateCrystallizationShut downScience
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Mono‐ and Bis(imidazolidinium ethynyl) Cations and Reduction of the Latter To Give an Extended Bis‐1,4‐([3]Cumulene)‐ p ‐carboquinoid System

2018

An extended π-system containing two [3]cumulene fragments separated by a p-carboquinoid and stabilized by two capping N-heterocyclic carbenes (NHCs) has been prepared. Mono- and bis(imidazolidinium ethynyl) cations have also been synthesized from the reaction of an NHC with phenylethynyl bromide or 1,4-bis(bromoethynyl)benzene. Cyclic voltammetry coupled with synthetic and structural studies showed that the dication is readily reduced to a neutral, singlet bis-1,4-([3]cumulene)-p-carboquinoid as a result of the π-accepting properties of the capping NHCs.

010405 organic chemistryCumuleneGeneral Chemistry010402 general chemistryPhotochemistry01 natural sciencesMedicinal chemistryCatalysis0104 chemical sciences3. Good healthDicationchemistry.chemical_compoundchemistryBromideX-ray crystallographySinglet stateCyclic voltammetryBenzeneAngewandte Chemie International Edition
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CCDC 1549500: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

2-{[4-(chloroethynyl)phenyl]ethynyl}-13-bis[26-bis(propan-2-yl)phenyl]-45-dihydro-1H-imidazol-3-ium 2-{[4-(bromoethynyl)phenyl]ethynyl}-13-bis[26-bis(propan-2-yl)phenyl]-45-dihydro-1H-imidazol-3-ium tetraphenylborate dichloromethane solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 986380: Experimental Crystal Structure Determination

2014

Related Article: Luke J. Murphy, Katherine N. Robertson, Scott G. Harroun, Christa L. Brosseau, Ulrike Werner-Zwanziger, Jani Moilanen, Heikki M. Tuononen, Jason A.C. Clyburne|2014|Science|344|75|doi:10.1126/science.1250808

Space GroupCrystallographyTetraphenylphosphonium cyanoformateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1549501: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters22'-[cyclohexa-25-diene-14-diylidenebis(ethene-21-diylidene)]bis{13-bis[26-bis(propan-2-yl)phenyl]imidazolidine}Experimental 3D Coordinates
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CCDC 1549502: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters13-bis[26-bis(propan-2-yl)phenyl]-2-(phenylethynyl)-45-dihydro-1H-imidazol-3-ium hexafluorophosphate dichloromethane solvateExperimental 3D Coordinates
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CCDC 1549499: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

Space GroupCrystallographyCrystal System22'-(14-phenylenedi(ethyne-21-diyl))bis(13-bis[26-di(propan-2-yl)phenyl]-45-dihydro-1H-imidazol-3-ium) bis(bromide) dichloromethane solvate dihydrateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1549503: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

Space GroupCrystallography13-bis[26-bis(propan-2-yl)phenyl]-2-[(4-fluorophenyl)ethynyl]-45-dihydro-1H-imidazol-3-ium hexafluorophosphate dichloromethane solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1549498: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

Space GroupCrystallographyCrystal System13-bis[26-bis(propan-2-yl)phenyl]-2-(phenylethynyl)-45-dihydro-1H-imidazol-3-ium bromide toluene solvateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1549504: Experimental Crystal Structure Determination

2017

Related Article: Brian M. Barry, R. Graeme Soper, Juha Hurmalainen, Akseli Mansikkamäki, Katherine N. Robertson, William L. McClennan, Alex J. Veinot, Tracey L. Roemmele, Ulrike Werner-Zwanziger, René T. Boeré, Heikki M. Tuononen, Jason A. C. Clyburne, Jason D. Masuda|2018|Angew.Chem.,Int.Ed.|57|749|doi:10.1002/anie.201711031

Space GroupCrystallographyCrystal SystemCrystal Structure2-[([11'-biphenyl]-4-yl)ethynyl]-13-bis[26-bis(propan-2-yl)phenyl]-45-dihydro-1H-imidazol-3-ium bromide dichloromethane solvateCell ParametersExperimental 3D Coordinates
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