Halowerk Molecule Pairwise Distance & Lennard-Jones Potential Calculator

Choose this endpoint when you need fast, classical pairwise distance computation and a simple single-parameter Lennard-Jones 12-6 potential energy calculation for a known 3D atomic configuration. It is ideal when you already have explicit coordinates and want to evaluate pair interactions without quantum chemistry, geometry optimization, bond modeling, or element-specific parameterization. Do not use it if you need real quantum mechanical energy calculations, ab initio methods, element-specific force fields, geometry relaxation, or predictions of experimental molecular properties.

• Fewer than 2 atoms supplied — request rejected
• More than 200 atoms supplied — request rejected
• Sigma value at or below zero — request rejected
• Epsilon value below zero — request rejected
• Atom coordinate exceeds ±1,000,000 — request rejected
• Missing required fields (element, x, y, z) — validation error
• Payment not provided or insufficient — 402 payment required