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McNary CP, Demireva M, Martens J, Berden G, Oomens J, Hamlow LA, Rodgers MT, Armentrout PB. Infrared multiple photon dissociation action spectroscopy of protonated unsymmetrical dimethylhydrazine and proton-bound dimers of hydrazine and unsymmetrical dimethylhydrazine. Phys Chem Chem Phys 2021; 23:25877-25885. [PMID: 34766618 DOI: 10.1039/d1cp03781a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The gas-phase structures of protonated unsymmetrical 1,1-dimethylhydrazine (UDMH) and the proton-bound dimers of UDMH and hydrazine are examined by infrared multiple photon dissociation (IRMPD) action spectroscopy utilizing light generated by a free electron laser and an optical parametric oscillator laser system. To identify the structures present in the experimental studies, the measured IRMPD spectra are compared to spectra calculated at the B3LYP-GD3BJ/6-311+G(d,p) level of theory. These comparisons show that protonated UDMH binds the proton at the methylated nitrogen atom (α) with two low-lying α conformers probably being populated. For (UDMH)2H+, the proton is shared between the methylated nitrogen atoms with several low-lying α conformers likely to be populated. Higher-lying conformers of (UDMH)2H+ in which the proton is shared between α and β (unmethylated) nitrogen atoms cannot be ruled out on the basis of the IRPMD spectrum. For (N2H4)2H+, there are four low-lying conformers that all reproduce the IRMPD spectrum reasonably well. As hydrazine and UDMH see usage as fuels for rocket engines, such spectra are potentially useful as a means of remotely monitoring rocket launches, especially in cases of unsuccessful launches where environmental hazards need to be assessed.
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Affiliation(s)
| | - Maria Demireva
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
| | - Jonathan Martens
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525ED Nijmegen, The Netherlands
| | - Giel Berden
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525ED Nijmegen, The Netherlands
| | - Jos Oomens
- Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525ED Nijmegen, The Netherlands.,Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098XH Amsterdam, The Netherlands
| | - L A Hamlow
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA
| | - M T Rodgers
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA
| | - P B Armentrout
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
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He CC, Hamlow LA, Zhu Y, Nei YW, Fan L, McNary CP, Maître P, Steinmetz V, Schindler B, Compagnon I, Armentrout PB, Rodgers MT. Structural and Energetic Effects of O2'-Ribose Methylation of Protonated Pyrimidine Nucleosides. J Am Soc Mass Spectrom 2019; 30:2318-2334. [PMID: 31435890 DOI: 10.1007/s13361-019-02300-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 07/18/2019] [Accepted: 07/23/2019] [Indexed: 06/10/2023]
Abstract
The 2'-substituents distinguish DNA from RNA nucleosides. 2'-O-methylation occurs naturally in RNA and plays important roles in biological processes. Such 2'-modifications may alter the hydrogen-bonding interactions of the nucleoside and thus may affect the conformations of the nucleoside in an RNA chain. Structures of the protonated 2'-O-methylated pyrimidine nucleosides were examined by infrared multiple photon dissociation (IRMPD) action spectroscopy, assisted by electronic structure calculations. The glycosidic bond stabilities of the protonated 2'-O-methylated pyrimidine nucleosides, [Nuom+H]+, were also examined and compared to their DNA and RNA nucleoside analogues via energy-resolved collision-induced dissociation (ER-CID). The preferred sites of protonation of the 2'-O-methylated pyrimidine nucleosides parallel their canonical DNA and RNA nucleoside analogues, [dNuo+H]+ and [Nuo+H]+, yet their nucleobase orientation and sugar puckering differ. The glycosidic bond stabilities of the protonated pyrimidine nucleosides follow the order: [dNuo+H]+ < [Nuo+H]+ < [Nuom+H]+. The slightly altered structures help explain the stabilization induced by 2'-O-methylation of the pyrimidine nucleosides.
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Affiliation(s)
- C C He
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - L A Hamlow
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Y Zhu
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Y-W Nei
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - L Fan
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - C P McNary
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112, USA
| | - P Maître
- Laboratoire de Chimie Physique (UMR8000), Université Paris-Sud, CNRS, Université Paris Saclay, 91405, Orsay, France
| | - V Steinmetz
- Laboratoire de Chimie Physique (UMR8000), Université Paris-Sud, CNRS, Université Paris Saclay, 91405, Orsay, France
| | - B Schindler
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - I Compagnon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622, Villeurbanne, France
| | - P B Armentrout
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112, USA
| | - M T Rodgers
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA.
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McNary CP, Nei YW, Maitre P, Rodgers MT, Armentrout PB. Infrared multiple photon dissociation action spectroscopy of protonated glycine, histidine, lysine, and arginine complexed with 18-crown-6 ether. Phys Chem Chem Phys 2019; 21:12625-12639. [PMID: 31155616 DOI: 10.1039/c9cp02265a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes of 18-crown-6 ether (18C6) with four protonated amino acids (AAs) are examined using infrared multiple photon dissociation (IRMPD) action spectroscopy utilizing light generated by the infrared free electron laser at the Centre Laser Infrarouge d'Orsay (CLIO). The AAs examined in this work include glycine (Gly) and the three basic AAs: histidine (His), lysine (Lys), and arginine (Arg). To identify the (AA)H+(18C6) conformations present in the experimental studies, the measured IRMPD spectra are compared to spectra calculated at the B3LYP/6-311+G(d,p) level of theory. Relative energies of various conformers and isomers are provided by single point energy calculations carried out at the B3LYP, B3P86, M06, and MP2(full) levels using the 6-311+G(2p,2d) basis set. The comparisons between the IRMPD and theoretical IR spectra indicate that 18C6 binds to Gly and His via the protonated backbone amino group, whereas protonated Lys prefers binding via the protonated side-chain amino group. Results for Arg are less definitive with strong evidence for binding to the protonated guanidino side chain (the calculated ground conformer at most levels of theory), but contributions from backbone binding to a zwitterionic structure are likely.
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Affiliation(s)
- Christopher P McNary
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, USA.
| | - Y-W Nei
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
| | - Philippe Maitre
- Université Paris Sud, Laboratoire de Chimie Physique, UMR8000 CNRS, Faculté des Sciences, Bâtiment 350, 91405 Orsay Cedex, France
| | - M T Rodgers
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
| | - P B Armentrout
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, USA.
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He CC, Hamlow LA, Devereaux ZJ, Zhu Y, Nei YW, Fan L, McNary CP, Maitre P, Steinmetz V, Schindler B, Compagnon I, Armentrout PB, Rodgers MT. Structural and Energetic Effects of O2'-Ribose Methylation of Protonated Purine Nucleosides. J Phys Chem B 2018; 122:9147-9160. [PMID: 30203656 DOI: 10.1021/acs.jpcb.8b07687] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The chemical difference between DNA and RNA nucleosides is their 2'-hydrogen versus 2'-hydroxyl substituents. Modification of the ribosyl moiety at the 2'-position and 2'-O-methylation in particular, is common among natural post-transcriptional modifications of RNA. 2'-Modification may alter the electronic properties and hydrogen-bonding characteristics of the nucleoside and thus may lead to enhanced stabilization or malfunction. The structures and relative glycosidic bond stabilities of the protonated forms of the 2'-O-methylated purine nucleosides, 2'-O-methyladenosine (Adom) and 2'-O-methylguanosine (Guom), were examined using two complementary tandem mass spectrometry approaches, infrared multiple photon dissociation action spectroscopy and energy-resolved collision-induced dissociation. Theoretical calculations were also performed to predict the structures and relative stabilities of stable low-energy conformations of the protonated forms of the 2'-O-methylated purine nucleosides and their infrared spectra in the gas phase. Low-energy conformations highly parallel to those found for the protonated forms of the canonical DNA and RNA purine nucleosides are also found for the protonated 2'-O-methylated purine nucleosides. Importantly, the preferred site of protonation, nucleobase orientation, and sugar puckering are preserved among the DNA, RNA, and 2'-O-methylated variants of the protonated purine nucleosides. The 2'-substituent does however influence hydrogen-bond stabilization as the 2'-O-methyl and 2'-hydroxyl substituents enable a hydrogen-bonding interaction between the 2'- and 3'-substituents, whereas a 2'-hydrogen atom does not. Further, 2'-O-methylation reduces the number of stable low-energy hydrogen-bonded conformations possible and importantly inverts the preferred polarity of this interaction versus that of the RNA analogues. Trends in the CID50% values extracted from survival yield analyses of the 2'-O-methylated and canonical DNA and RNA forms of the protonated purine nucleosides are employed to elucidate their relative glycosidic bond stabilities. The glycosidic bond stability of Adom is found to exceed that of its DNA and RNA analogues. The glycosidic bond stability of Guom is also found to exceed that of its DNA analogue; however, this modification weakens this bond relative to its RNA counterpart. The glycosidic bond stability of the protonated purine nucleosides appears to be correlated with the hydrogen-bond stabilization of the sugar moiety.
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Affiliation(s)
- C C He
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - L A Hamlow
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - Zachary J Devereaux
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - Y Zhu
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - Y-W Nei
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - L Fan
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
| | - C P McNary
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
| | - P Maitre
- Laboratoire de Chimie Physique (UMR8000), CNRS, Université Paris-Sud, Université Paris-Saclay , 91405 Orsay , France
| | - V Steinmetz
- Laboratoire de Chimie Physique (UMR8000), CNRS, Université Paris-Sud, Université Paris-Saclay , 91405 Orsay , France
| | - B Schindler
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne , France
| | - I Compagnon
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière , F-69622 Villeurbanne , France
| | - P B Armentrout
- Department of Chemistry , University of Utah , Salt Lake City , Utah 84112 , United States
| | - M T Rodgers
- Department of Chemistry , Wayne State University , Detroit , Michigan 48202 , United States
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Boles GC, Hightower RL, Coates RA, McNary CP, Berden G, Oomens J, Armentrout PB. Experimental and Theoretical Investigations of Infrared Multiple Photon Dissociation Spectra of Aspartic Acid Complexes with Zn2+ and Cd2+. J Phys Chem B 2018; 122:3836-3853. [DOI: 10.1021/acs.jpcb.8b00801] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Georgia C. Boles
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Randy L. Hightower
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Rebecca A. Coates
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Christopher P. McNary
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Giel Berden
- Radboud University, FELIX Laboratory, Institute for Molecules and Materials, Toernooiveld 7c, NL-6525 ED Nijmegen, The Netherlands
| | - Jos Oomens
- Radboud University, FELIX Laboratory, Institute for Molecules and Materials, Toernooiveld 7c, NL-6525 ED Nijmegen, The Netherlands
- van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, NL-1098 XH Amsterdam, The Netherlands
| | - P. B. Armentrout
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
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Rezaee M, McNary CP, Armentrout PB. Threshold collision-induced dissociation and theoretical study of protonated azobenzene. J Chem Phys 2017; 147:164308. [DOI: 10.1063/1.5000683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Mohammadreza Rezaee
- Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Christopher P. McNary
- Department of Chemistry, University of Utah, 315 S. 1400 E. Rm. 2020, Salt Lake City, Utah 84112, USA
| | - P. B. Armentrout
- Department of Chemistry, University of Utah, 315 S. 1400 E. Rm. 2020, Salt Lake City, Utah 84112, USA
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McNary CP, Armentrout PB. Non-adiabatic behavior in the homolytic and heterolytic bond dissociation of protonated hydrazine: A guided ion beam and theoretical investigation. J Chem Phys 2017; 147:124306. [DOI: 10.1063/1.4997415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Christopher P. McNary
- Department of Chemistry, University of Utah, 315 S. 1400 E,
Room 2020, Salt Lake City, Utah 84112, USA
| | - P. B. Armentrout
- Department of Chemistry, University of Utah, 315 S. 1400 E,
Room 2020, Salt Lake City, Utah 84112, USA
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Carpenter JE, McNary CP, Furin A, Sweeney AF, Armentrout PB. How Hot are Your Ions Really? A Threshold Collision-Induced Dissociation Study of Substituted Benzylpyridinium "Thermometer" Ions. J Am Soc Mass Spectrom 2017; 28:1876-1888. [PMID: 28500582 DOI: 10.1007/s13361-017-1693-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
The first absolute experimental bond dissociation energies (BDEs) for the main heterolytic bond cleavages of four benzylpyridinium "thermometer" ions are measured using threshold collision-induced dissociation in a guided ion beam tandem mass spectrometer. In this experiment, substituted benzylpyridinium ions are introduced into the apparatus using an electrospray ionization source, thermalized, and collided with Xe at varied kinetic energies to determine absolute cross-sections for these reactions. Various effects are accounted for, including kinetic shifts, multiple collisions, and internal and kinetic energy distributions. These experimentally measured 0 K BDEs are compared with computationally predicted values at the B3LYP-GD3BJ, M06-GD3, and MP2(full) levels of theory with a 6-311+G(2d,2p) basis set using vibrational frequencies and geometries determined at the B3LYP/6-311+G(d,p) level. Additional dissociation pathways are observed for nitrobenzylpyridinium experimentally and investigated using these same levels of theory. Experimental BDEs are also compared against values in the literature at the AM1, HF, B3LYP, B3P86, and CCSD(T) levels of theory. Of the calculated values obtained in this work, the MP2(full) level of theory with counterpoise corrections best reproduces the experimental results, as do the similar literature CCSD(T) values. Lastly, the survival yield method is used to determine the characteristic temperature (Tchar) of the electrospray source prior to the thermalization region and to confirm efficient thermalization. Graphical Abstract ᅟ.
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Affiliation(s)
- John E Carpenter
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, UT, 84112, USA
| | - Christopher P McNary
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, UT, 84112, USA
| | - April Furin
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, UT, 84112, USA
| | - Andrew F Sweeney
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, UT, 84112, USA
| | - P B Armentrout
- Department of Chemistry, University of Utah, 315 S. 1400 E. Room 2020, Salt Lake City, UT, 84112, USA.
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Coates RA, Boles GC, McNary CP, Berden G, Oomens J, Armentrout PB. Correction: Zn 2+ and Cd 2+ cationized serine complexes: infrared multiple photon dissociation spectroscopy and density functional theory investigations. Phys Chem Chem Phys 2017; 19:18100-18101. [DOI: 10.1039/c7cp90143g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Zn2+ and Cd2+ cationized serine complexes: infrared multiple photon dissociation spectroscopy and density functional theory investigations’ by Rebecca A. Coates et al., Phys. Chem. Chem. Phys., 2016, 18, 22434–22445.
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Affiliation(s)
| | | | | | - Giel Berden
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
| | - Jos Oomens
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
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Coates RA, McNary CP, Boles GC, Berden G, Oomens J, Armentrout PB. Correction: Structural characterization of gas-phase cysteine and cysteine methyl ester complexes with zinc and cadmium dications by infrared multiple photon dissociation spectroscopy. Phys Chem Chem Phys 2017; 19:18777-18778. [DOI: 10.1039/c7cp90144e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Structural characterization of gas-phase cysteine and cysteine methyl ester complexes with zinc and cadmium dications by infrared multiple photon dissociation spectroscopy’ by Rebecca A. Coates et al., Phys. Chem. Chem. Phys., 2015, 17, 25799–25808.
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Affiliation(s)
| | | | | | - Giel Berden
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
| | - Jos Oomens
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
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Abstract
Threshold collision-induced dissociation (TCID) using a guided ion beam tandem mass spectrometer is performed on (N2H4)nH+ where n = 2-4 and on the proton-bound unsymmetrical 1,1-dimethylhydrazine (UDMH) dimer complex. The primary dissociation pathway for all reactants consists of loss of a single hydrazine (or UDMH) molecule followed by the sequential loss of additional hydrazine molecules at higher collision energies for n = 3 and 4. The data were analyzed using a statistical model after accounting for internal and kinetic energy distributions, multiple collisions, and kinetic shifts to obtain 0 K bond dissociation energies (BDEs). These are also converted to values at room temperature by using a rigid rotor/harmonic oscillator approximation and theoretical molecular constants. Experimental BDEs are compared to theoretical BDEs determined at the B3LYP, M06, mPW1PW91, PBE0, MP2(full), and CCSD(T) levels of theory with and without empirical dispersion with a 6-311+G(2d,2p) basis set. The structures of all clusters are explored and exhibit extensive hydrogen bonding.
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Affiliation(s)
- Christopher P McNary
- Department of Chemistry, University of Utah , 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, United States
| | - P B Armentrout
- Department of Chemistry, University of Utah , 315 S. 1400 E. Room 2020, Salt Lake City, Utah 84112, United States
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McNary CP, Armentrout PB. Threshold collision-induced dissociation of protonated hydrazine and dimethylhydrazine clustered with water. J Chem Phys 2016; 145:214311. [PMID: 28799395 DOI: 10.1063/1.4971238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Threshold collision-induced dissociation using a guided ion beam tandem mass spectrometer is performed on (N2H4)H+(H2O)n, where n = 1 and 2, and on the protonated unsymmetrical 1,1-dimethylhydrazine one-water complex. The primary dissociation pathway for all clusters is a loss of a single water molecule, which for n = 2 is followed by the sequential loss of an additional water molecule at higher collision energies. The data are analyzed using a statistical model after accounting for internal and kinetic energy distributions, multiple collisions, and kinetic shifts to obtain 0 K bond dissociation energies (BDEs). These are also converted using a rigid rotor/harmonic oscillator approximation to yield thermodynamic values at room temperature. Experimental BDEs compare favorably to theoretical BDEs determined at the B3LYP, M06, mPW1PW91, PBE0, MP2(full), and CCSD(T) levels of theory with a 6-311+G(2d,2p) basis set both with and without empirical dispersion. These calculations also allow visualization of the structures of these complexes, which are simple hydrogen-bonded donor-acceptors.
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Affiliation(s)
| | - P B Armentrout
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, USA
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Coates RA, Boles GC, McNary CP, Berden G, Oomens J, Armentrout PB. Zn2+ and Cd2+ cationized serine complexes: infrared multiple photon dissociation spectroscopy and density functional theory investigations. Phys Chem Chem Phys 2016; 18:22434-45. [DOI: 10.1039/c6cp03805k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc and cadmium dications bind serine in tridentate structures at the amine and carbonyl groups and side-chain hydroxyl group.
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Affiliation(s)
| | | | | | - Giel Berden
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
| | - Jos Oomens
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
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Coates RA, McNary CP, Boles GC, Berden G, Oomens J, Armentrout PB. Structural characterization of gas-phase cysteine and cysteine methyl ester complexes with zinc and cadmium dications by infrared multiple photon dissociation spectroscopy. Phys Chem Chem Phys 2015; 17:25799-808. [DOI: 10.1039/c5cp01500f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc and cadmium dications bind cysteine in tridentate structures at the amine and carbonyl groups and deprotonated sulfur atom.
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Affiliation(s)
| | | | | | - Giel Berden
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
| | - Jos Oomens
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- NL-6525ED Nijmegen
- The Netherlands
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McNary CP, Armentrout PB. Iron cluster–CO bond energies from the kinetic energy dependence of the Fen+(n = 4–17) + CO association reactions. Phys Chem Chem Phys 2014; 16:26467-77. [DOI: 10.1039/c4cp02040e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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