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Machine learning meets volcano plots: Computational discovery of cross-coupling catalysts

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TLDR
The application of modern machine learning to challenges in atomistic simulation is gaining attraction and the potential for innovation in this area is being explored.
Abstract
The application of modern machine learning to challenges in atomistic simulation is gaining attraction. We present new machine learning models that can predict the energy of the oxidative addition process between a transition metal complex and a substrate for C–C cross-coupling reactions. In turn, this quantity can be used as a descriptor to estimate the activity of homogeneous catalysts using molecular volcano plots. The versatility of this approach is illustrated for vast libraries of organometallic catalysts based on Pt, Pd, Ni, Cu, Ag, and Au combined with 91 ligands. Out-of-sample machine learning predictions were made on a total of 18 062 compounds leading to 557 catalyst candidates falling into the ideal thermodynamic window. This number was further refined by searching for candidates with an estimated price lower than 10 US$ per mmol. The 37 catalyst finalists are dominated by palladium phosphine ligand combinations but also include the earth abundant transition metal (Cu) with less common ligands. Our results indicate that modern statistical learning techniques can be applied to the computational discovery of readily available and promising catalyst candidates.

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Journal ArticleDOI

Moving Frontiers in Transition Metal Catalysis: Synthesis, Characterization and Modeling

TL;DR: Progress is reported on in colloidal synthesis of transition metal nanoparticles for preparation of model catalysts to close the materials gap between the discoveries of fundamental surface science and industrial application.
Journal ArticleDOI

Data-Driven Approaches Can Overcome the Cost-Accuracy Trade-Off in Multireference Diagnostics.

TL;DR: Machine learning models are developed to predict WFT-based diagnostics from a combination of DFT- based diagnostics and a new, size-independent 3D geometric representation that correlate as well with MR effects as their computed (i.e., with WFT) values, significantly improving over the DFTs on which the models were trained.
Journal ArticleDOI

Semi-supervised Machine Learning Enables the Robust Detection of Multireference Character at Low Cost

TL;DR: A semi-supervised machine learning approach with virtual adversarial training (VAT) of an MR classifier using 15 WFT and DFT MR diagnostics as inputs that outperforms the alternatives, as quantified by the distinct property distributions of SR- and MR-classified molecules.
Journal ArticleDOI

Surface Effect of the MgCl2 Support in Ziegler–Natta Catalyst for Ethylene Polymerization: A Computational Study

TL;DR: In this article , the role of MgCl 2 in the Ziegler-Natta (Z-N) catalyst system for ethylene polymerization was explored, and the surface energy of the support served as an effective descriptor for predicting the catalyst performances.
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An In‐Depth Mechanistic Study of Ru‐Catalysed Aqueous Methanol Dehydrogenation and Prospects for Future Catalyst Design

TL;DR: In this paper, the authors provide mechanistic insights into the dehydrogenation of aqueous methanol catalysed by the [Ru(trop2dae)] complex, which is in-situ generated from [Ru (trop2dad)], trop2dad=1,4−bis(5H−dibenzo[a,d]cyclohepten]-5yl)‐1, 4−diazabuta‐1-3-diene.
References
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Support-Vector Networks

TL;DR: High generalization ability of support-vector networks utilizing polynomial input transformations is demonstrated and the performance of the support- vector network is compared to various classical learning algorithms that all took part in a benchmark study of Optical Character Recognition.
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A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu

TL;DR: The revised DFT-D method is proposed as a general tool for the computation of the dispersion energy in molecules and solids of any kind with DFT and related (low-cost) electronic structure methods for large systems.
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