Browsing Department of Chemistry by Issue Date
Now showing items 1-20 of 20
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Aggregation of Fine Particles at the Sediment-Water Interface
(American Geophysical Union, 1992-11-15)The presence of a bottom sediment layer agitated by mechanical stirring or by resident organisma (tubificid oligochaetes) significantly increases the rate at which fine (1 µm) cohesive particles are removed from suspension ... -
Statement on Spectroscopic Imaging in Art Conservation: A New Tool for Materials Investigations
(Leonardo Electronic Archive, 2002-09) -
Differential Enantioselective Transformation of Atropisomeric Polychlorinated Biphenyls by Multiple Bacterial Strains with Different Inducing Compounds
(American Society for Microbiology., 2002-11)Enantioselective biotransformation of polychlorinated biphenyls (PCBs) has been suggested from studies showing differential occurrence of PCB enantiomers in environmental samples, including river and riparian biota and ... -
Spectroscopic Imaging in Art Conservation: A New Tool for Materials Investigations
(The MIT Press, 2003-08-01) -
Performance of a constructed wetland in Grand Marais, Manitoba, Canada: Removal of nutrients, pharmaceuticals, and antibiotic resistance genes from municipal wastewater
(Chemistry Central Ltd., 2013)BACKGROUND: The discharge of complex mixtures of nutrients, organic micropollutants, and antibiotic resistance genes from treated municipal wastewater into freshwater systems are global concerns for human health and aquatic ... -
Spectroscopic approaches for studying faint text on a wooden tally from Invincible (1758)
(International Journal of Conservation Science, 2013-01-01)In this study we describe the application of X-ray fluorescence, variable pressure scanning electron microscopy and visible (420-720 nm) hyperspectral imaging to assess the surface properties of a wood tally stick that was ... -
Truce–Smiles rearrangement of substituted phenyl ethers
(The Royal Society of Chemistry, 2015-05-26)The requirement of aryl ring activation by strong-electron withdrawing substituents in substrates for the intramolecular nucleophilic aromatic substitution reaction known as the Truce–Smiles rearrangement was examined. ... -
The Truce–Smiles rearrangement and related reactions: a review
(NRC Research Press, 2017-01-16)The Truce–Smiles rearrangement is an X → C aryl migration reaction that is achieved by an intramolecular nucleophilic aromatic substitution pathway. The reaction exhibits a wide substrate scope with respect to a migrating ... -
Effect of the tether length upon Truce‐Smiles rearrangement reactions
(John Wiley & Sons, Ltd., 2017-07-07)This report examines the effect of substrate design upon the Truce‐Smiles rearrangement, an intramolecular nucleophilic aromatic substitution reaction. The length of the molecular spacer that tethers the carbanion nucleophile ... -
Diverse silver(I) coordination chemistry with cyclic selenourea ligands
(The Royal Society of Chemistry, 2018-01-30)The coordination chemistry of two selenourea ligands (SeIMes and SeIPr) towards silver(I) triflate and silver(I) nitrate was investigated. Two aggregation modes were observed in the solid state, strongly influenced by the ... -
Synthesis and coordination chemistry of cyclic seleno- and telluroureas
(De Gruyter, 2018-07)Chalcogenated derivatives of N-heterocyclic carbene ligands have received increasing attention due to their diverse chemical reactivity and potential applications in fields such as medicine and materials chemistry. ... -
Gypsum Amendment Reduces Redox-Induced Phosphorous Release from Freshly Manured, Flooded Soils to Floodwater
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2019-01-01)The effectiveness of gypsum in reducing runoff P losses from soils and the mechanisms responsible are well documented; however, gypsum amendment effects in reducing redox-induced P losses from flooded soils are less ... -
A new polymorph of phenylselenium trichloride
(International Union of Crystallography, 2019-11)A second polymorph of phenylselenium trichloride, PhSeCl3 or C6H5Cl3Se, is disclosed, which is comprised of asymmetric chlorine-bridged noncovalent dimer units rather than polymeric chains. These dimers are each weakly ... -
Phosphorus Release from Unamended and Gypsum- or Biochar-Amended Soils under Simulated Snowmelt and Summer Flooding Conditions
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2020-03-30)Prolonged flooding changes the oxidation–reduction status of soils, often enhancing P release to overlying floodwater. We studied P release from unamended, gypsum-amended, and biochar-amended soils under simulated snowmelt ... -
Temperature and freezing effects on phosphorus release from soils to overlying floodwater under flooded-anaerobic conditions
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2020-03-30)Increased phosphorus (P) availability under flooded, anaerobic conditions may accelerate P loss from soils to water bodies. Existing knowledge on P release to floodwater from flooded soils is limited to summer conditions ... -
Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues [first edition]
(OpenStax and University of Winnipeg Library, 2020-08-21)Chemistry and the Environment is designed to accompany a one-semester course in chemistry-based discussions of important environmental issues such as air pollution, the ozone layer, climate change and water quality. Chemical ... -
Workbook to accompany Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues [first edition]
(OpenStax and University of Winnipeg Library, 2020-09-08) -
Slides to accompany Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues [first edition]
(University of Winnipeg Library, 2020-09-23) -
Crystal structure and computational study of an oxo-bridged bis-titanium(III) complex
(International Union of Crystallography, 2021-06)The solid-state structure of the new compound mu-oxido-bis[dichloridotris(tetrahydrofuran-kappa-O)titanium(III)], [Ti2Cl4O(C4H8O)6], at 150 K has been determined. The crystal has monoclinic (C2/c) symmetry and the complex ... -
Mobility of arsenic and vanadium in waterlogged calcareous soils due to addition of zeolite and manganese oxide amendments
(Wiley, 2023-01-17)Addition of manganese(IV) oxides (MnO2) and zeolite can affect the mobility of As and V in soils due to geochemical changes that have not been studied well in calcareous, flooded soils. This study evaluated the mobility ...
