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🔍 nathan killoran 📂 Chemistry
Showing 17 results for "nathan killoran" in Chemistry
Chemistry Preprint PDF DOI

Steady-State Free Precession NMR in the Presence of Heteronuclear Couplings and Decoupling: More Than Meets the Eye

Sundaresan Jayanthi, Zuzana Osifova, Mark Shif, Adonis Lupulescu, Lucio Frydman · 2025

Fourier Transform (FT) has been a mainstay of analytical 13C and 15N NMR. On the other hand it has been shown that Steady State Free Precession (SSFP) experiments which depart from this scheme can, un…

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Chemistry Preprint PDF DOI

Is the protactinium(V) mono-oxo bond weaker than what we thought?

Tamara Shaaban, Hanna Oher, Jean Aupiais, Julie Champion, Andre Severo Pereira Gomes, Claire Le Naour, Melody Maloubier, Florent Real, Eric Renault, Xavier Rocquefelte, Bruno Siberchicot, Valerie Vallet, Remi Maurice · 2024

The bond distance is the simplest and most obvious indicator of the nature of a given chemical bond. However, for rare chemistry, it may happen that it is not yet firmly established. In this communica…

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Chemistry Preprint PDF DOI

More than just smoke and mirrors: Gas-phase polaritons for optical control of chemistry

Jane C. Nelson, Marissa L. Weichman · 2024

Gas-phase molecules are a promising platform through which to elucidate the mechanisms of action and scope of polaritons for optical control of chemistry. Polaritons arise from the strong coupling of …

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Chemistry Preprint PDF DOI

Sensitivity of Coupled Cluster Electronic Properties on the Reference Determinant: Can Kohn-Sham Orbitals Be More Beneficial than Hartree-Fock Orbitals?

Zsolt Benedek, Paula Timar, Tibor Szilvasi, Gergely Barcza · 2021

Coupled cluster calculations are traditionally performed over Hartree-Fock reference orbitals (HF-CC methodology). However, it has been repeatedly argued in the literature that the use of a Kohn-Sham …

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Chemistry Preprint PDF DOI

Improving data quality for 3D electron diffraction (3D ED) by Gatan Image Filter and a new crystal tracking method

Taimin Yang, Hongyi Xu, Xiaodong Zou · 2021

3D ED is an effective technique to determine the structures of submicron- or nano-sized crystals. In this paper, we implemented energy-filtered 3D ED using a Gatan Energy Filter (GIF) in both selected…

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Chemistry Preprint PDF DOI

Is Externally Corrected Coupled Cluster Always Better than the Underlying Truncated Configuration Interaction?

Ilias Magoulas, Karthik Gururangan, Piotr Piecuch, J. Emiliano Deustua, Jun Shen · 2021

The short answer to the question in the title is 'no'. We identify classes of truncated configuration interaction (CI) wave functions for which the externally corrected coupled-cluster (ec-CC) approac…

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Chemistry Preprint PDF DOI

Canonical and DLPNO-based G4(MP2)XK-inspired composite wavefunction methods parametrized against large and chemically diverse training sets: Are they more accurate and/or robust than double hybrid DFT?

Emmanouil Semidalas, Jan M.L. Martin · 2020

The large and chemically diverse GMTKN55 benchmark was used as a training set for parametrizing composite wave function thermochemistry protocols akin to G4(MP2)XK theory (Chan et al, JCTC 2019, 15, 4…

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Chemistry Preprint PDF DOI

Deep Neural Network Computes Electron Densities and Energies of a Large Set of Organic Molecules Faster than Density Functional Theory (DFT)

Anton V. Sinitskiy, Vijay S. Pande · 2018

Density functional theory (DFT) is one of the main methods in Quantum Chemistry that offers an attractive trade off between the cost and accuracy of quantum chemical computations. The electron density…

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Chemistry Preprint PDF DOI

Experimentally Probing the Libration of Interfacial Water: the Rotational Potential of Water is Stiffer at the Air/Water Interface than in Bulk Liquid

Yujin Tong, Tobias Kampfrath, R. Kramer Campen (Fritz Haber Institute of the Max Planck Society, Berlin, Germany) · 2017

Most properties of liquid water are determined by its hydrogen-bond network. Because forming an aqueous interface requires termination of this network, one might expect the molecular level properties …

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Chemistry Preprint PDF DOI

Machine learning prediction errors better than DFT accuracy

Felix A. Faber, Luke Hutchison, Bing Huang, Justin Gilmer, Samuel S. Schoenholz, George E. Dahl, Oriol Vinyals, Steven Kearnes, Patrick F. Riley, O. Anatole von Lilienfeld · 2017

We investigate the impact of choosing regressors and molecular representations for the construction of fast machine learning (ML) models of thirteen electronic ground-state properties of organic molec…

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Chemistry Preprint PDF DOI

In situ X-ray diffraction studies of graphite oxidation reaction indicating different exfoliation mechanism than ex site studies

Karolis Vilcinskas, Fokko M. Mulder, Stephen J. Picken, Ger J. M. Koper · 2017

We offer a brief overview of the solvent-based graphene production and summarize the current knowledge on the formation mechanism of graphite oxide that proceeds via graphite intercalation compounds. …

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Chemistry Preprint PDF DOI

Canonical-ensemble SA-CASSCF strategy for problems with more diabatic than adiabatic states: Charge-bond resonance in monomethine cyanines

Seth Olsen · 2014

This paper reviews basic results from a theory of the classical probabilities in state-averaged complete active space self-consistent field wave functions. It is proposed that a canonical (Boltzmann) …

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Chemistry Preprint PDF DOI

A superconvergent representation of the Gersten-Nitzan and Ford-Webber nonradiative rates

Alexander Moroz · 2011

An alternative representation of the quasistatic nonradiative rates of Gersten and Nitzan [J. Chem. Phys. 1981, 75, 1139] and Ford and Weber [Phys. Rep. 1984, 113, 195] is derived for the respective p…

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Chemistry Preprint PDF DOI

Without Spectroscopy at the Beginning, Catalysis Research Proceeded in the Wrong Direction for More Than 100 Years

Ralph A. Gardner-Chavis, John T. Reye, Theodore B. Selover Jr, Huixiong Zhang · 2008

A study by infrared spectroscopy of the physisorbed region of catalysis demonstrated that the intermediates of catalysis exist on the surface as a two dimensional gas. Data in the Atomic Energy Level …

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Chemistry Peer-Reviewed PDF DOI

The time-course of visual categorizations: you spot the animal faster than the bird.

 · 1970

BACKGROUND: Since the pioneering study by Rosch and colleagues in the 70s, it is commonly agreed that basic level perceptual categories (dog, chair...) are accessed faster than superordinate ones (ani…

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Chemistry Peer-Reviewed PDF DOI

More than one way to see it: Individual heuristics in avian visual computation.

 · 1970

Comparative pattern learning experiments investigate how different species find regularities in sensory input, providing insights into cognitive processing in humans and other animals. Past research h…

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Chemistry Peer-Reviewed PDF DOI

[The Palmier date palm and Fusarium infection. II. Report on the stereochemistry of monosaccharides and their various derivatives and the growth of Fusarium oxysporum f.sp. albedinis (Killian et Maire) Gordon].

 · 1970

Fusarium oxysporum albedinis was grown in the presence of 20 different sugars or their derivatives. The results obtained were correlated with the stereochemical structure of the main oses. Osmotic phe…

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