Comparison between the bonded and non-bonded parameters of two commonly used simple force fields for water.

Model	Bond	Angle	pcO	r min [Å]	εk [kcal mol−1]
SPC/ε	1.0000	109.45	−0.89000	1.7838728	0.168704
OPC3	0.97888	109.47	−0.89517	1.7814988	0.163406