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The choice of internal coordinates in complex chemical systems
Author(s) -
Németh Károly,
Challacombe Matt,
Van Veenendaal Michel
Publication year - 2010
Publication title -
journal of computational chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.907
H-Index - 188
eISSN - 1096-987X
pISSN - 0192-8651
DOI - 10.1002/jcc.21494
Subject(s) - log polar coordinates , cartesian coordinate system , generalized coordinates , orthogonal coordinates , bipolar coordinates , action angle coordinates , computer science , coordinate system , spherical coordinate system , range (aeronautics) , variety (cybernetics) , polar coordinate system , algorithm , geometry , mathematics , mathematical analysis , artificial intelligence , aerospace engineering , engineering
Abstract This article presents several considerations for the appropriate choice of internal coordinates in various complex chemical systems. The appropriate and black box recognition of internal coordinates is of fundamental importance for the extension of internal coordinate algorithms to all fields where previously Cartesian coordinates were the preferred means of geometry manipulations. Such fields range from local and global geometry optimizations to molecular dynamics as applied to a wide variety of chemical systems. We present a robust algorithm that is capable to quickly determine the appropriate choice of internal coordinates in a wide range of atomic arrangements. © 2010 Wiley Periodicals, Inc. J Comput Chem, 2010