MOLDEN a visualization program of molecular and electronic structure

MOLDEN a pre- and post processing program of molecular and electronic structure

G.Schaftenaar, CMBI, the Netherlands



Molden is a package for displaying Molecular Density from the Ab Initio packages GAMESS-UK , GAMESS-US and GAUSSIAN and the Semi-Empirical packages Mopac/Ampac, it also supports a number of other programs via the Molden Format. Molden reads all the required information from the GAMESS / GAUSSIAN outputfile. Molden is capable of displaying Molecular Orbitals, the electron density and the Molecular minus Atomic density. Either the spherically averaged atomic density or the oriented ground state atomic density can be subtracted for a number of standard basis sets. Molden supports contour plots, 3-d grid plots with hidden lines and a combination of both. It can write a variety of graphics instructions; postscript, XWindows, VRML, povray, OpenGL, tekronix4014, hpgl, hp2392 and Figure. Both Xwindows and OpenGL versions of Molden are also capable of importing and displaying of chemx, PDB, and a variety of mopac/ampac files and lots of other formats. Molden also can animate reaction paths and molecular vibrations. It can calculate and display the true or Multipole Derived Electrostatic Potential and atomic charges can be fitted to the Electrostatic Potential calculated on a Connolly surface. Molden also features an stand alone forcefield program ambfor, which can optimise geometries with the combined Amber (protein) and GAFF (small molecules) force fields. Atom typing can be done automatically and interactively from within Molden, as well as firing optimisation jobs. Molden has a powerful Z-matrix editor which give full control over the geometry and allows you to build molecules from scratch, including polypeptides. Molden was also submitted to the QCPE (dead?) (QCPE619), allthough the Xwindows version is considerably running behind on the current one.



Molden5.7 source code updated to deal with G16 (Gaussian 2016) output. NO executables updated !
Molden5.7 Adds editable text fields that are longer than the visible string and introduces a new way of selecting a range of amino acids.
Molden5.6 introduces interfaces to the open source packages openbabel and pharmer.
Openbabel is used to create 2D images of the molecules in a .sdf file. It is also used to do 2D fingerprint searching.
Pharmer is used to pharmacophore (3D) searching against indexed databases of .sdf files.
Molden5.4 Missing hydrogens atoms of HETATM molecules (pdb files) are stored locally. Pdb files can now be clipped. This version ONLY adds or rescues protein functionality with respect to version 5.3. If you are not interested in proteins you can skip this version.
Molden5.3 Fixes missing residues. Introduces an alternative way of generating rotamers, without using z-matrices. This potentially a faster algorithm.
Molden5.2.1 Supports Movie making through avconv/ffmpeg.
Molden5.2 calculates the Electron Localization Function (ELF).
molden5.1: Updated code of ambfor/ambmd to speed up optimisations/MD ofproteins solvated in water (Jan, 2014).
molden5.0.6: Add hydrogen to HETATM residues of PDB files works again with this version.
Introducing a native windows executable of gmolden here (Apr, 2013)
molden5.0.5: Molden can now localize orbitals via the Boys scheme
molden5.0: Introduces a crystal optimiser with the Gaff forcefield(Dec 10, 2010)
molden4.8: Problem with reading G09 z-matrix output fixed (Feb 1, 2010)
molden4.8: addition of hydrogens to hetatm records of pdb entries
molden4.8: optimisation of hydrogen bonds, waters and histidine residues molden4.8: retrieving pdb files from the internet in the file selector molden4.8: Support for calculated NMR spectrum in combination with Gaussian outputs molden4.8: simple MD program, ambmd ambfor: important update to ambfor force field module
molden4.7: partial optimisations are now possible (click here)
molden4.7: molden can now hold multiple structures in memory
molden4.6: features a forcefield optimisation program Ambfor (AMBER/GAFF forcefields)
molden4.6: now better supports Gaussian IRC optimisations and MP2 optimisations
molden4.6: Support for Orca.
molden4.6: Support for G functions with Gaussian.
molden4.6: features dynamic memory allocation for proteins and display of dipole moment.
full interactive opengl version of molden: gmolden

Molden topics:

* Register as a Molden User

* How to get a copy of Molden ?

* What are the latest changes/bugfixes to Molden ?

* The Z-Matrix Editor

* Using Molden with Gaussian outputs

* Using Molden with Mopac

* Using Molden with programs OTHER than Gamess/Gaussian/Mopac

* How to set up MOLDEN to use helper programs

* Molden command line flags

* Currently tested platforms

* Controlling Molden by keywords

* Viewing Electron Density plots with Molden

* Exceeding MaxNum of Orbitals!

* Viewing/Editing Protein Structure with Molden

* Optimization of small molecules with the AMBFOR module

* Optimization of docked small molecule protein complex with the AMBFOR module

* Viewing Reaction Paths with Molden

* Viewing Vibrations with Molden

* Calculation of ESP fit charges with Molden

* Molden Format

* Referencing Molden

* GMOLDEN OpenGL Gallery

* Creating an isodensity surface colorcoded with the electrostatic potential.

* Using Molden as a viewer for chemical mime types

* How to View/Create animations with Molden

* MOLDEN VRML orbital/electron density service


* The Laplacian of the Electron Density

* How we can build a crystalline structure with Molden?

* OpenGL via an external helper program (superseded by gmolden)

* Molden users

* Mail comments/complaints to author