The Alexandria Library, a Quantum-chemical Database of Molecular Properties for Force Field Development

Overview

Journal Sci Data

Specialty Science

Date 2018 Apr 11

PMID 29633987

Citations 16

Authors

Mohammad M Ghahremanpour

Paul J van Maaren

David van der Spoel

Affiliations

Soon will be listed here.

Abstract

Data quality as well as library size are crucial issues for force field development. In order to predict molecular properties in a large chemical space, the foundation to build force fields on needs to encompass a large variety of chemical compounds. The tabulated molecular physicochemical properties also need to be accurate. Due to the limited transparency in data used for development of existing force fields it is hard to establish data quality and reusability is low. This paper presents the Alexandria library as an open and freely accessible database of optimized molecular geometries, frequencies, electrostatic moments up to the hexadecupole, electrostatic potential, polarizabilities, and thermochemistry, obtained from quantum chemistry calculations for 2704 compounds. Values are tabulated and where available compared to experimental data. This library can assist systematic development and training of empirical force fields for a broad range of molecules.

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