1
|
Al-Mahamad LLG, Clegg W. Synthesis and crystal structure of a silver(I) 6-methylmercaptopurine riboside complex. Acta Crystallogr C Struct Chem 2024; 80:80-84. [PMID: 38386080 DOI: 10.1107/s2053229624001670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 02/19/2024] [Indexed: 02/23/2024] Open
Abstract
Silver nitrate reacts with 6-methylmercaptopurine riboside (6-MMPR) in aqueous solution containing methanol and dimethyl sulfoxide at room temperature to give a colourless crystalline complex, namely, bis(6-methylmercaptopurine riboside-κN7)(nitrato-κ2O,O')silver(I) 2.32-hydrate, [Ag(NO3)(C11H14N4O4S)2]·2.32H2O. The crystal structure, determined from synchrotron diffraction data, shows a central AgI ion on a crystallographic twofold rotation axis, coordinated in an almost linear fashion by two 6-MMPR ligands via atom N7 (purine numbering), with the nitrate counter-ion loosely coordinated as a bidentate ligand, forming a discrete molecular complex as an approximate dihydrate. The complex and water molecules are connected in a three-dimensional network by hydrogen bonding.
Collapse
Affiliation(s)
- Lamia L G Al-Mahamad
- Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq
| | - William Clegg
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom
| |
Collapse
|
2
|
Experiments on collisional energy transfer. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/b978-0-444-64207-3.00001-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|
3
|
Paul AK, West NA, Winner JD, Bowersox RDW, North SW, Hase WL. Non-statistical intermolecular energy transfer from vibrationally excited benzene in a mixed nitrogen-benzene bath. J Chem Phys 2018; 149:134101. [DOI: 10.1063/1.5043139] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Amit K. Paul
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, USA
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India
| | - Niclas A. West
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA
| | - Joshua D. Winner
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA
| | | | - Simon W. North
- Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA
| | - William L. Hase
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, USA
| |
Collapse
|
4
|
Hsu HC, Tsai MT, Dyakov YA, Ni CK. Energy transfer of highly vibrationally excited molecules studied by crossed molecular beam/time-sliced velocity map ion imaging. INT REV PHYS CHEM 2012. [DOI: 10.1080/0144235x.2012.673282] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
5
|
Liu Q, Havey DK, Li Z, Mullin AS. Effects of Alkylation on Deviations from Lennard−Jones Collision Rates for Highly Excited Aromatic Molecules: Collisions of Methylated Pyridines with HOD. J Phys Chem A 2009; 113:4387-96. [DOI: 10.1021/jp811077p] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qingnan Liu
- Department of Chemistry and Biochemistry, University of Maryland College Park, Maryland 20705
| | - Daniel K. Havey
- Department of Chemistry and Biochemistry, University of Maryland College Park, Maryland 20705
| | - Ziman Li
- Department of Chemistry and Biochemistry, University of Maryland College Park, Maryland 20705
| | - Amy S. Mullin
- Department of Chemistry and Biochemistry, University of Maryland College Park, Maryland 20705
| |
Collapse
|
6
|
Havey DK, Liu Q, Li Z, Elioff M, Mullin AS. Collisions of Highly Vibrationally Excited Pyrazine (Evib = 37 900 cm-1) with HOD: State-Resolved Probing of Strong and Weak Collisions. J Phys Chem A 2007; 111:13321-9. [DOI: 10.1021/jp076023i] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel K. Havey
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry and Biochemistry, Boston University, Boston, Massachusetts 02215
| | - Qingnan Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry and Biochemistry, Boston University, Boston, Massachusetts 02215
| | - Ziman Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry and Biochemistry, Boston University, Boston, Massachusetts 02215
| | - Michael Elioff
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry and Biochemistry, Boston University, Boston, Massachusetts 02215
| | - Amy S. Mullin
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry and Biochemistry, Boston University, Boston, Massachusetts 02215
| |
Collapse
|
7
|
Duffin AM, Johnson JA, Muyskens MA, Sevy ET. Competition between Photochemistry and Energy Transfer in UV-Excited Diazabenzenes. 4. UV Photodissociation of 2,3-, 2,5-, and 2,6-Dimethylpyrazine. J Phys Chem A 2007; 111:13330-8. [DOI: 10.1021/jp0762471] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrew M. Duffin
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602
| | - Jeremy A. Johnson
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602
| | - Mark A. Muyskens
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602
| | - Eric T. Sevy
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602
| |
Collapse
|
8
|
Havey DK, Liu Q, Li Z, Elioff M, Fang M, Neudel J, Mullin AS. Direct Determination of Collision Rates beyond the Lennard-Jones Model through State-Resolved Measurements of Strong and Weak Collisions. J Phys Chem A 2007; 111:2458-60. [PMID: 17388341 DOI: 10.1021/jp0712497] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We describe a new approach for measuring absolute rates for molecular collisions including contributions of both strong and weak collisions. Elastic and inelastic collisions are monitored using high-resolution transient IR spectroscopy by measuring increases in the velocity distributions of individual rotational states of scattered molecules. Weak collisional energy transfer is detected by measuring velocity increases for the low-energy rotational states. This technique is illustrated for the collisional relaxation of highly vibrationally excited pyrazine (108 kcal/mol) with HOD. The observed collision rate is nearly twice the Lennard-Jones collision rate.
Collapse
|
9
|
Li Z, Korobkova E, Werner K, Shum L, Mullin AS. State-resolved collisional quenching of vibrationally excited pyrazine (E(vib) = 37,900 cm(-1)) by D35Cl(v = 0). J Chem Phys 2005; 123:174306. [PMID: 16375527 DOI: 10.1063/1.2098647] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Supercollision relaxation of highly vibrationally excited pyrazine (E(vib) = 37,900 cm(-1)) with D35Cl is investigated using high-resolution transient IR diode laser absorption spectroscopy at 4.4 microm. Highly excited pyrazine is prepared by pulsed UV excitation at 266 nm, followed by rapid radiationless decay to the ground electronic state. The rotational energy distribution of the scattered DCl (v = 0,J) molecules with J = 15-21 is characterized by T(rot) = 755+/-90 K. The relative translational energy increases as a function of rotational quantum number for DCl with T(rel) = 710+/-190 K for J = 15 and T(rel) = 1270+/-240 K for J = 21. The average change in recoil velocity correlates with the change in rotational angular momentum quantum number and highlights the role of angular momentum in energy gain partitioning. The integrated energy-transfer rate for appearance of DCl (v = 0,J = 15-21) is k(2)(int) = 7.1x10(-11) cm3 molecule(-1) s(-1), approximately one-eighth the Lennard-Jones collision rate. The results are compared to earlier energy gain measurements of CO2 and H2O.
Collapse
Affiliation(s)
- Ziman Li
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, USA
| | | | | | | | | |
Collapse
|
10
|
Higgins CJ, Chapman S. Collisional Energy Transfer between Hot Pyrazine and Cold CO: A Classical Trajectory Study. J Phys Chem A 2004. [DOI: 10.1021/jp040140l] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cortney J. Higgins
- Department of Chemistry, Barnard College, Columbia University, New York, New York 10025
| | - Sally Chapman
- Department of Chemistry, Barnard College, Columbia University, New York, New York 10025
| |
Collapse
|
11
|
Park J, Shum L, Lemoff AS, Werner K, Mullin AS. Methylation effects in state-resolved quenching of highly vibrationally excited azabenzenes (Evib∼38 500 cm−1). II. Collisions with carbon dioxide. J Chem Phys 2002. [DOI: 10.1063/1.1499720] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
12
|
Elioff MS, Fang M, Mullin AS. Methylation effects in state resolved quenching of highly vibrationally excited azabenzenes (Evib∼38 500 cm−1). I. Collisions with water. J Chem Phys 2001. [DOI: 10.1063/1.1400782] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|