AFLOW-QHA3P: Robust and automated method to compute thermodynamic properties of solids (open access)

AFLOW-QHA3P: Robust and automated method to compute thermodynamic properties of solids

Article introducing the quasiharmonic approximation three-phonon method to calculate the thermodynamic properties of both nonmetallic and metallic compounds. This study demonstrates that QHA3P is an ideal framework for the high-throughput prediction of finite-temperature material properties, combining the accuracy of QHA with the computational efficiency of SC-QHA.
Date: July 8, 2019
Creator: Nath, Pinku; Usanmaz, Demet; Hicks, David; Oses, Corey; Fornari, Marco; Buongiorno Nardelli, Marco et al.
System: The UNT Digital Library
New molecular architectures containing low-valent cluster centres with di- and trimetalated 2-vinylpyrazine ligands: synthesis and molecular structures of Ru5(CO)15(μ5-C4H2N2CH[double bond, length as m-dash]CH)(μ-H)2 and Ru8(CO)24(μ7-C4H2N2CH[double bond, length as m-dash]C)(μ-H)3 (open access)

New molecular architectures containing low-valent cluster centres with di- and trimetalated 2-vinylpyrazine ligands: synthesis and molecular structures of Ru5(CO)15(μ5-C4H2N2CH[double bond, length as m-dash]CH)(μ-H)2 and Ru8(CO)24(μ7-C4H2N2CH[double bond, length as m-dash]C)(μ-H)3

Article details the reaction of Ru3(CO)12 with 2-vinylpyrazine, the aim of which was to synthesize clusters in which all of the donor atoms of the 2-vinylpyrazine ligand participate in bonding to the cluster core.
Date: July 4, 2019
Creator: Hossain, Md. Monir; Akter, Nahid; Ghosh, Shishir; Nesterov, Vladimir N.; Richmond, Michael G.; Hogarth, Graeme et al.
System: The UNT Digital Library
The C₂H₂ + NO₂ Reaction: Implications for High Pressure Oxidation of C₂H₂/NOx Mixtures (open access)

The C₂H₂ + NO₂ Reaction: Implications for High Pressure Oxidation of C₂H₂/NOx Mixtures

Article discussing an experimental and kinetic modeling study of the interaction between C₂H₂ and NOx under flow reactor conditions in the intermediate temperature range (600–900 K), high pressure (50–60 bar), and for stoichiometries ranging from reducing to strongly oxidizing. The results show that presence of NOx serves both to sensitize and inhibit oxidation of C₂H₂.
Date: July 25, 2018
Creator: Marshall, Paul; Leung, Caroline; Lopez, Jorge Gimenez; Rasmussen, Christian T.; Hashemi, Hamid; Glarborg, Peter et al.
System: The UNT Digital Library
Experimental and Computational Studies of the Kinetics of the Reaction of Hydrogen Atoms with Carbon Disulfide (open access)

Experimental and Computational Studies of the Kinetics of the Reaction of Hydrogen Atoms with Carbon Disulfide

Article discussing an investigation of the reaction of H + CS₂ products. The reaction was found to be pressure dependent and in the fall-off region or near the low pressure limit. Transition state theory yields an estimate for the high-pressure limit of addition over 290–300 K of 1.3 × 10−9 exp( −7.2 kJ mol −1 /RT) cm3 molecule −1 s −1. Uncertainties are discussed in the text.
Date: July 7, 2018
Creator: Kerr, Katherine E.; Gao, Yide & Marshall, Paul
System: The UNT Digital Library
Toward a More Rational Design of the Direct Synthesis of Aniline: A Density Functional Theory Study (open access)

Toward a More Rational Design of the Direct Synthesis of Aniline: A Density Functional Theory Study

This article uses plane-wave density functional theory calculations to investigate the direct amination of benzene catalyzed by a Ni(111) surface to explore the reaction intermediates and to understand the role of nickel in this reaction.
Date: March 24, 2017
Creator: Alsunaidi, Zainab H. A.; Cundari, Thomas R., 1964- & Wilson, Angela K.
System: The UNT Digital Library
The role of the 5f valence orbitals of early actinides in chemical bonding 5f valence orbiatls of early actinides in chemical bonding (open access)

The role of the 5f valence orbitals of early actinides in chemical bonding 5f valence orbiatls of early actinides in chemical bonding

This article illuminates the role of the 5f valence orbitals of uranium, neptunium and plutonium in chemical bonding using advanced spectroscopies.
Date: July 6, 2017
Creator: Vitova, T.; Pidchenko, I.; Fellhauer, D.; Bagus, Paul S.; Joly, Y.; Pruessmann, T. et al.
System: The UNT Digital Library