TIP4P model of water

The TIP4P model is a rigid planar four-site interaction potential for water, having a similar geometry to the original Bernal and Fowler model.

Parameters

$r_{\mathrm {OH} }$ (Å)	$\angle$HOH , deg	Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sigma} (Å)	Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \epsilon/k} (K)	q(O) (e)	q(H) (e)	q(M) (e)	Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle r_{\mathrm {OM}}} (Å)
0.9572	104.52	3.154	78.0	0	0.52	-2q(H)	0.15

Plastic crystal phases

Recent simulations have demonstrated the existence of plastic crystal phases for the TIP4P model.

• J. L. Aragones and C. Vega "Plastic crystal phases of simple water models", Journal of Chemical Physics 130 244504 (2009)

See also

The following is a list of empirical models that build upon this TIP4P model:

• TIP4P/2005
• TIP4P/Ew
• TIP4P/FQ
• TIP4P-HB
• TIP4P/Ice
• TIP4P-pol