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MAPLE User Guide

General Introduction

What can MAPLE do for you? What capabilities does it provide?

What is the format of the input file?

Function

Solvant

Provides solvent-phase simulation by adding implicit or explicit solvation.

Constrain

Controls molecular geometry by fixing selected atoms or internal coordinates.

Task

Single-Point Energy

Computes the electronic energy on a given molecular geometry.

I. Input Parameters

II. Output File

Optimization

Helps you relax an initial molecular structure and obtain an optimized geometry at a stationary point on the potential energy surface

I. Input Parameters

→ method: LBFGS

I. Adjustable Parameters

→ method: RFO

I. Adjustable Parameters

II. Output File Contents

Transition State Search

Helps you track down reaction transition states by locating first-order saddle points on the potential energy surface.

I. Input Parameters

→ method: NEB

→ method: PRFO

I. Adjustable Parameters

II. Output File

→ method: DIMER

I. Adjustable Parameters

II. Output File

→ method: STRING

I. Adjustable Parameters

II. Output File

II. Input Structure Requirements

Scan (Constrained PES Scan)

Lets you sweep selected bonds, angles, or dihedrals and build a relaxed potential-energy map along your chosen coordinates

I. Input Parameters

→ method: LBFGS

I. Adjustable Parameters

→ method: RFO

I. Adjustable Parameters

II. Output File Contents

Frequency (Vibrational Analysis & Thermochemistry)

Lets you check your structure, inspect vibrational modes (including imaginary ones), and get ZPE plus full temperature- and pressure-dependent thermochemical corrections in one go

I. Input Parameters

II. Output File Contents

IRC (Intrinsic Reaction Coordinate)

Lets you start from a transition state and follow the intrinsic reaction path downhill, mapping how reactants turn into products.

I. Input Parameters

→ method: GS

I. Adjustable Parameters

II. Output File Contents