Physics > Chemical Physics
[Submitted on 27 Nov 2022 (v1), last revised 13 Apr 2023 (this version, v2)]
Title:High-throughput ab initio reaction mechanism exploration in the cloud with automated multi-reference validation
View PDFAbstract:Quantum chemical calculations on atomistic systems have evolved into a standard approach to study molecular matter. These calculations often involve a significant amount of manual input and expertise although most of this effort could be automated, which would alleviate the need for expertise in software and hardware accessibility. Here, we present the AutoRXN workflow, an automated workflow for exploratory high-throughput lectronic structure calculations of molecular systems, in which (i) density functional theory methods are exploited to deliver minimum and transition-state structures and corresponding energies and properties, (ii) coupled cluster calculations are then launched for optimized structures to provide more accurate energy and property estimates, and (iii) multi-reference diagnostics are evaluated to back check the coupled cluster results and subject hem to automated multi-configurational calculations for potential multi-configurational cases. All calculations are carried out in a cloud environment and support massive computational campaigns. Key features of all omponents of the AutoRXN workflow are autonomy, stability, and minimum operator interference. We highlight the AutoRXN workflow at the example of an autonomous reaction mechanism exploration of the mode of action of a homogeneous catalyst for the asymmetric reduction of ketones.
Submission history
From: Markus Reiher [view email][v1] Sun, 27 Nov 2022 00:13:31 UTC (1,784 KB)
[v2] Thu, 13 Apr 2023 12:47:44 UTC (1,521 KB)
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