The 2003 van Duin et al. paper has Si-O-H systems, but is there a source for parameters without those pesky oxygen atoms? for Six-Hy only?
well, the presence of O atoms in your ff file shouldn't matter if you don't have them in your system.
There are a few force fields for the 'combustion' branch that include Si and H, e.g.
K.Chenoweth, S. Cheung, A.C.T. van Duin, W.A. Goddard III, and E.M. Kober Simulations on the Thermal Decomposition of a Poly(dimethylsiloxane) Polymer Using the ReaxFF Reactive Force Field J. Am. Chem. Soc., 2005, 127 (19), pp 7192-7202
Which you could perhaps check out?
Hello!
As Dr. Goumans indicated, If oxygens are not explicitly defined in your configuration, the parameters for the O-i interactions will not affect your calculation.
Is there any reason for the need of this file without the oxygen interactions?
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