NMR Predictors

Reaxys is a web-based tool developed by Elsevier for retrieving information about chemical compounds and data from published literature, including journals and patents. The platform provides access to chemical compounds, reactions, properties, related bibliographic data, substance data with synthesis planning information, and experimental procedures from selected journals and patents. Launched in 2009 as the successor to the CrossFire databases, Reaxys was designed to offer research chemists access to current and historical information in organic, inorganic, and organometallic chemistry through an intuitive interface. The platform covers over 200 years of chemistry, abstracted from thousands of journal titles, books, and patents. Its content includes data from selected journals and chemistry patents, focusing on entries that have a chemical structure, are supported by experimental facts, and have credible citations.

BIOVIA TURBOMOLE is a high-performance quantum chemistry software package designed for ab initio electronic structure calculations across molecules, clusters, periodic systems, and solutions. Developed initially by the University of Karlsruhe and Forschungszentrum Karlsruhe GmbH, and now maintained by TURBOMOLE GmbH, it offers a comprehensive suite of computational methods, including density functional theory (DFT), Møller–Plesset perturbation theory, coupled-cluster techniques, and GW-Bethe–Salpeter methods. It excels in delivering accurate predictions for chemical reactions, spectroscopy, and optical device simulations, with features like reaction path optimizations, transition state searches, and solvation effects modeled using COSMO-RS. Spectroscopic capabilities encompass IR, Raman, VCD, UV-Vis, and vibronic spectra, while optical property simulations benefit from advanced spin-orbit coupling methods and relativistic all-electron calculations.