Journal of Molecular Modeling

, Volume 10, Issue 2, pp 155–164

Optimization of parameters for semiempirical methods IV: extension of MNDO, AM1, and PM3 to more main group elements

Original Paper


The NDDO semiempirical methods MNDO, AM1, and PM3 have been extended to all the remaining non-radioactive elements of the main group, excluding the noble gases. Most of the new elements are of Groups I and II. 44 sets of parameters are presented for the following methods and elements. MNDO: Na, Mg, K, Ca, Ga, As, Se, Rb, Sr, In, Sb, Te, Cs, Ba, Tl, and Bi; AM1: Li, Be, Na, Mg, K, Ca, Ga, As, Se, Rb, Sr, In, Sn, Sb, Te, Cs, Ba, Tl, Pb, and Bi; PM3: B, Na, K, Ca, Rb, Sr, Cs, and Ba. Average errors are presented for heats of formation, molecular geometries, etc.


Semiempirical methods MNDO AM1 PM3 Parameter optimization 

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Stewart Computational ChemistryColorado SpringsUSA

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