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Browsing Chemistry and Biochemistry by Author "Groenewold, Gary S."
Now showing items 1-16 of 16
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Addition of H2O and O2 to acetone and dimethylsulfoxide ligated uranyl(V) dioxocations
Leavitt, Christopher M.; Bryantsev, Vyacheslav S.; De Jong, Wibe A.; Diallo, Mamadou S.; Goddard, William A.; Groenewold, Gary S.; Van Stipdonk, Michael J. (American Chemical Society, 2009-03-19)Gas-phase complexes of the formula [UO2(lig)]+ (lig = acetone (aco) or dimethylsulfoxide (dmso)) were generated by electrospray ionization (ESI) and studied by tandem ion-trap mass spectrometry to determine the general ... -
Elucidation of the collision induced dissociation pathways of water and alcohol coordinated complexes containing the uranyl cation
Van Stipdonk, Michael J.; Anbalagan, Victor; Chien, Winnie; Gresham, Garold L.; Groenewold, Gary S.; Hanna, Dorothy A. (Springer, 2003-11-01)Multiple-stage tandem mass spectrometry was used to characterize the dissociation pathways for complexes composed of (1) the uranyl ion, (2) nitrate or hydroxide, and (3) water or alcohol. The complex ions were derived ... -
The gas-phase bis-uranyl nitrate complex [(UO(2))(2)(NO(3))(5)](-): Infrared spectrum and structure
Groenewold, Gary S.; Van Stipdonk, Michael J.; Omens, Jos; De Jong, Wibe A.; McIlwain, Michael E. (Elsevier, 2011-12-01)The infrared spectrum of the bis-uranyl nitrate complex [(UO(2))(2)(NO(3))(5)](-) was measured in the gas phase using multiple photon dissociation (IRMPD). Intense absorptions corresponding to the nitrate symmetric and ... -
Gas-phase uranyl-nitrile complex ions
Van Stipdonk, Michael J.; Chien, Winnie; Bulleigh, Kellis; Wu, Qun; Groenewold, Gary S. (American Chemical Society, 2006-01-26)Electrospray ionization was used to generate doubly charged complex ions composed of the uranyl ion and nitrile ligands. The complexes, with general formula [UO2(RCN)n]2+, n = 0-5 (where R=CH3-, CH3CH2-, or C6H5-), were ... -
Generation of gas-phase VO2+, VOOH+, and VO2+-nitrile complex ions by electrospray ionization and collision-induced dissociation
Parsons, Zack; Leavitt, Christopher M.; Duong, Thanh; Groenewold, Gary S.; Gresham, Garold L.; Van Stipdonk, Michael J. (American Chemical Society, 2006-10-19)Cationic metal species normally function as Lewis acids, accepting electron density from bound electron-donating ligands, but they can be induced to function as electron donors relative to dioxygen by careful control of ... -
Infrared multiple photon dissociation spectroscopy of group I and group II metal complexes with Boc-hydroxylamine
Dain, Ryan P.; Gresham, Garold L.; Groenewold, Gary S.; Steill, Jeffrey D.; Oomens, Jos; Van Stipdonk, Michael J. (WILEY-BLACKWELL, 2013-08-30)RATIONALE Hydroxamates are essential growth factors for some microbes, acting primarily as siderophores that solubilize iron for transport into a cell. Here we determined the intrinsic structure of 1:1 complexes between ... -
Infrared multiple photon dissociation spectroscopy of sodium and potassium chlorate anions
Dain, Ryan P.; Leavitt, Christopher M.; Oomens, Jos; Steill, Jeffrey D.; Groenewold, Gary S.; Van Stipdonk, Michael J. (John Wiley and Sons, 2010-01-01)The structures of gas-phase, metal chlorate anions with the formula [M(ClO(3))(2)](-), M = Na and K, were determined using tandem mass spectrometry and infrared multiple photon dissociation (IRMPD) spectroscopy. Structural ... -
Infrared multiple-photon dissociation spectroscopy of group II metal complexes with salicylate
Dain, Ryan P.; Gresham, Garold L.; Groenewold, Gary S.; Steill, Jeffrey D.; Oomens, Jos; Van Stipdonk, Michael J. (John Wiley and Sons, 2011-07-15)Ion trap tandem mass spectrometry with collision-induced dissociation, and the combination of infrared multiple-photon dissociation (IRMPD) spectroscopy and density functional theory (DFT) calculations, were used to ... -
Intrinsic hydration of monopositive uranyl hydroxide, nitrate, and acetate cations
Chien, Winnie; Anbalagan, Victor; Zandler, Melvin E.; Van Stipdonk, Michael J.; Hanna, Dorothy A.; Gresham, Garold L.; Groenewold, Gary S. (Springer, 2004-06-01)The intrinsic hydration of three monopositive uranyl-anion complexes (UO(2)A)(+) (where A = acetate, nitrate, or hydroxide) was investigated using ion-trap mass spectrometry (IT-MS). The relative rates for the formation ... -
Investigations of acidity and nucleophilicity of diphenyldithiophosphinate ligands using theory and gas-phase dissociation reactions
Leavitt, Christopher M.; Gresham, Garold L.; Benson, Michael T.; Gaumet, Jean-Jacques; Peterman, Dean R.; Klaehn, John R.; Moser, Megan; Aubriet, Frederic; Van Stipdonk, Michael J.; Groenewold, Gary S. (American Chemical Society, 2008-04-21)Diphenyldithiophosphinate (DTP) ligands modified with electron-withdrawing trifluoromethyl (TFM) substitutents are of high interest because they have demonstrated potential for exceptional separation of Am (3+) from ... -
IRMPD spectroscopy of anionic group II metal nitrate cluster ions
Leavitt, Christopher M.; Oomens, Jos; Dain, Ryan P.; Steill, Jeffrey D.; Groenewold, Gary S.; Van Stipdonk, Michael J. (Springer, 2009-05-01)Anionic group II metal nitrate clusters of the formula [M(2)(NO(3))(5)](-), where M(2) = Mg(2), MgCa, Ca(2), and Sr(2), are investigated by infrared multiple photon dissociation (IRMPD) spectroscopy to obtain vibrational ... -
Production and collision induced dissociation of gas-phase, water and alcohol coordinated uranyl complexes containing halide or perchlorate anions
Chien, Wen-Fang Winnie; Van Stipdonk, Michael J.; Groenewold, Gary S.; Gresham, Garold L.; Anbalagan, Victor (Wichita State University. Graduate School., 2005-04-22) -
Production and collision-induced dissociation of gas-phase, water- and alcohol-coordinated uranyl complexes containing halide or perchlorate anions
Anbalagan, Victor; Chien, Winnie; Gresham, Garold L.; Groenewold, Gary S.; Van Stipdonk, Michael J. (John Wiley and Sons, 2004-01-01)Electrospray ionization was used to generate mono-positive gas-phase complexes of the general formula [UO2A(S)n]+ where A = OH, Cl, Br, I or ClO4, S = H2O, CH3OH or CH3CH2OH, and n = 1-3. The multiple-stage dissociation ... -
Spectroscopic evidence for mobilization of amide position protons during CID of model peptide ions
Molesworth, Samuel P.; Leavitt, Christopher M.; Groenewold, Gary S.; Oomens, Jos; Steill, Jeffrey D.; Van Stipdonk, Michael J. (Springer, 2009-10-01)Infrared multiple photon dissociation (IRMPD) spectroscopy was used to study formation of b2+ from nicotinyl-glycine-glycine-methyl ester (NicGGOMe). IRMPD shows that NicGGOMe is protonated at the pyridine ring of the ... -
Spectroscopic investigation of H atom transfer in a gas-phase dissociation reaction: McLafferty rearrangement of model gas-phase peptide ions
Van Stipdonk, Michael J.; Kerstetter, Dale R.; Leavitt, Christopher M.; Groenewold, Gary S.; Steill, Jeffrey D.; Oomens, Jos (Royal Society of Chemistry, 2008-06-14)Wavelength-selective infrared multiple-photon photodissociation (WS-IRMPD) was used to study isotopically-labeled ions generated by McLafferty rearrangement of nicotinyl-glycine-tert-butyl ester and betaine-glycine-tert-butyl ... -
Spectroscopic investigation of hydrogen atom transfer in the McLafferty rearrangement
Kerstetter, Dale R.; Leavitt, Christopher M.; Groenewold, Gary S.; Steill, Jeffrey D.; Oomens, Jos; Van Stipdonk, Michael J. (Wichita State University. Graduate School., 2008-04-25)In this study, wavelength-selective infrared multiple-photon photodissociation (WS-IRMPD) was used to study the transfer of an H atom in a gas-phase unimolecular rearrangement reaction. The reaction studied was the ...