Quantum Chemistry calculation & Electronic Structure Analysis Services

Investigate the electronic structure, molecular properties, and reaction mechanisms of molecules and materials using advanced quantum chemistry methods to deliver accurate, atomistic insights for research and innovation.

Overview

Quantum chemistry provides a fundamental understanding of molecular and material systems by describing their electronic structure at the atomic level. At TSLab, we offer comprehensive quantum chemistry services to investigate molecular properties, reaction mechanisms, electronic behavior, and chemical reactivity using state-of-the-art computational methods.

Our calculations are performed using validated quantum chemical methodologies ranging from Density Functional Theory (DFT) and ab initio approaches to semi-empirical methods, depending on the complexity and objectives of each project. Supported by high-performance computing (HPC) infrastructure, our workflows deliver reliable, reproducible, and publication-quality results for academic research and industrial applications.

Beyond routine calculations, TSLab also develops customized computational workflows for challenging systems, including transition metal complexes, catalysts, advanced materials, and novel molecular architectures that require specialized theoretical treatments.

Applications

Our quantum chemistry services are applicable to a wide range of systems, including:

Organic and inorganic molecules
Transition metal and coordination complexes
Biomolecular active sites
Catalysts and catalytic reaction mechanisms
Nanomaterials and functional materials
Polymers and supramolecular systems
Crystalline and amorphous materials
Molecular clusters and hybrid materials

Analysis Capabilities

We provide comprehensive electronic structure analyses, including:

Geometry Optimization – Determine the most stable molecular and crystal structures.
Electronic Structure Analysis – Molecular orbitals (HOMO-LUMO), electron density, spin density, and density of states (DOS).
Reaction Mechanism Investigation – Transition state search, reaction pathways, activation energy, and intrinsic reaction coordinate (IRC) analysis.
Spectroscopic Property Prediction – IR, Raman, UV-Vis, NMR, EPR, and vibrational frequency calculations.
Chemical Reactivity Analysis – Electrostatic potential (ESP), Fukui functions, conceptual DFT descriptors, and charge distribution analysis.
Thermochemical Analysis – Enthalpy, entropy, Gibbs free energy, heat capacity, and thermodynamic corrections.
Non-Covalent Interaction Analysis – Hydrogen bonding, van der Waals interactions, π–π interactions, NCI, QTAIM, and NBO analysis.
Excited-State Calculations – Time-Dependent DFT (TD-DFT) for electronic excitation and optical properties.
Force Field Parameter Development – Quantum-derived atomic charges, bonded parameters, and validation for molecular dynamics simulations.
Electronic Property Characterization – Dipole moments, polarizability, hyperpolarizability, frontier orbitals, and charge-transfer analysis.

Quantum Chemistry calculation & Electronic Structure Analysis

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