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Title: PageRank as a Collective Variable to Study Complex Chemical Transformations and Their Energy Landscapes

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5082648· OSTI ID:1525102

A reduced set of reaction coordinates are often employed in chemistry to describe the collective change between reactants and products within the context of rare event theories and in the exploration of energy landscapes. While incredibly powerful, use of these collective variables becomes increasingly challenging as the systems under study become more complex. Recent advancement of new descriptions of collective molecular coordinates have included PageRank (PR) analysis of the network of interactions about molecules and atoms within a system. Herein, PR is developed as a continuous variable that not only captures chemical transformations but can also be employed as a collective variable for a process that could span a highly dimensional energy surface. The derivatives of PR with respect to atomic coordinates are presented, and subsequently combined with forces during a chemical transformation within biased molecular dynamics sampling simulations to create the potential of mean force (PMF). This technique is demonstrated for two reactions: 1) the transformation of tetrahedral [Al(OH)4]-(aq) to octahedral [Al(OH)4(H2O)2]-(aq), and 2) the formation of contact ion pairs (CIPs) and solvent separated ion pairs (SSIPs) of Na+ and OH- in bulk water. Comparison of the behavior of the PR collective variable in both examples reveals that the ability of the PR to resolve local versus extended configurational attributes is tuned by the size of the network employed. This is a unique feature of PageRank that enables control over the resolution of the PMF that is produced.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Interfacial Dynamics in Radioactive Environments and Materials (IDREAM); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1525102
Report Number(s):
PNNL-SA-132298
Journal Information:
Journal of Chemical Physics, Vol. 150, Issue 13
Country of Publication:
United States
Language:
English

References (39)

Brownian motion in a field of force and the diffusion model of chemical reactions journal April 1940
Coordination numbers as reaction coordinates in constrained molecular dynamics journal January 1998
Reaction Rate Theory in Coordination Number Space: An Application to Ion Solvation journal March 2016
Marcus Theory of Ion-Pairing journal July 2017
Determining polyhedral arrangements of atoms using PageRank journal June 2012
Novel Analysis of Cation Solvation Using a Graph Theoretic Approach journal March 2012
Assessing Generic Collective Variables for Determining Reaction Rates in Metadynamics Simulations journal February 2017
Reprint of: The anatomy of a large-scale hypertextual web search engine journal December 2012
Network Centrality in the Human Functional Connectome journal October 2011
Finding scientific gems with Google’s PageRank algorithm journal January 2007
What is Twitter, a social network or a news media? conference January 2010
Structure and Dynamics of NaCl Ion Pairing in Solutions of Water and Methanol journal December 2015
Structural and Thermodynamic Properties of the Cm III Ion Solvated by Water and Methanol journal April 2016
Competitive Interactions Within Cm(III) Solvation in Binary Water/Methanol Solutions journal April 2018
Quickstep: Fast and accurate density functional calculations using a mixed Gaussian and plane waves approach journal April 2005
The structure of Al(III) in strongly alkaline aluminate solutions — A review journal May 2009
Structure of Aqueous Sodium Aluminate Solutions:  A Solution X-ray Diffraction Study journal October 1998
Canonical sampling through velocity rescaling journal January 2007
Comment on “Generalized Gradient Approximation Made Simple” journal January 1998
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
Gaussian basis sets for accurate calculations on molecular systems in gas and condensed phases journal September 2007
Separable dual-space Gaussian pseudopotentials journal July 1996
Molecular Models of Hydroxide, Oxyhydroxide, and Clay Phases and the Development of a General Force Field journal January 2004
A smooth particle mesh Ewald method journal November 1995
The Raman Spectra and Structures of Aluminate and Zincate Ions journal March 1952
Nuclear Magnetic Resonance Studies on Hydration of Cations journal February 1960
Coordination Numbers of Beryllium and Aluminum Ions in Aqueous Solutions journal September 1963
Structure of the aluminate ion in solutions at high pH journal October 1970
Aluminium(III) hydration in aqueous solution. A Raman spectroscopic investigation and an ab initio molecular orbital study of aluminium(III) water clusters journal January 2000
Transitions in Al Coordination during Gibbsite Crystallization Using High-Field 27 Al and 23 Na MAS NMR Spectroscopy journal November 2017
Role of Pentacoordinated Al 3+ Ions in the High Temperature Phase Transformation of γ-Al 2 O 3 journal May 2008
Ab Initio Molecular Dynamics Reveal Spectroscopic Siblings and Ion Pairing as New Challenges for Elucidating Prenucleation Aluminum Speciation journal June 2018
Nonphysical sampling distributions in Monte Carlo free-energy estimation: Umbrella sampling journal February 1977
THE weighted histogram analysis method for free-energy calculations on biomolecules. I. The method journal October 1992
Generalized transition state theory in terms of the potential of mean force journal September 2003
Transition state theory: Variational formulation, dynamical corrections, and error estimates journal November 2005
Transition-Path Theory and Path-Finding Algorithms for the Study of Rare Events journal March 2010
PLUMED: A portable plugin for free-energy calculations with molecular dynamics journal October 2009
Transmission Coefficients, Committors, and Solvent Coordinates in Ion-Pair Dissociation journal January 2014

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