Ice V

Ice V was discovered by the Nobel prize winner Percy Williams Bridgman in 1912 (Ref. 1). Ice V has a monoclinic unit cell containing 28 molecules (Ref. 2). Ice V is partially proton disordered, the proton ordered phase being Ice XIII. Ice V is stable in the region of 210-270 K and for pressures between 3.4kbar 6.3 kbar (Ref. 4).

Experimental equation of state

Gagnon et. al. have provided an empirical equation of state for ice V at a temperature of 237.65K (Ref. 3 Eq. 5)

$\rho (V)=1.1974+0.01963~p-0.001098~p^{2}$

where the density is in units of g.cm^-3, and the pressure, $p$ is in units of kbar, where $3.3<p<5.8$.

References

1. Percy Williams Bridgman "Water in the liquid and five solid forms, under pressure", Proceedings of the American Academy of Arts and Sciences XLVII pp. 441-558 (1912)
2. B. Kamb, A. Prakash and C. Knobler "Structure of ice V", Acta Crystallographica 22 pp. 706-715 (1967)
3. R. E. Gagnon, H. Kiefte, M. J. Clouter and Edward Whalley "Acoustic velocities and densities of polycrystalline ice Ih, II, III, V, and VI by Brillouin spectroscopy", Journal of Chemical Physics 92 pp. 1909-1914 (1990)
4. Colin Lobban, John L. Finney and Werner F. Kuhs "The structure and ordering of ices III and V", Journal of Chemical Physics 112 7169-7180 (2000)
5. Carlos Vega, Carl McBride, Eduardo Sanz and Jose L. F. Abascal "Radial distribution functions and densities for the SPC/E, TIP4P and TIP5P models for liquid water and ices Ih, Ic, II, III, IV, V, VI, VII, VIII, IX, XI and XII", Physical Chemistry Chemical Physics 7 pp. 1450 - 1456 (2005)
6. E. G. Noya, C. Menduiña, J. L. Aragones, and C. Vega "Equation of State, Thermal Expansion Coefficient, and Isothermal Compressibility for Ices Ih, II, III, V, and VI, as Obtained from Computer Simulation", Journal of Physical Chemistry C 111 pp. 15877 - 15888 (2007)
7. Chris Knight and Sherwin J. Singer "Hydrogen bond ordering in ice V and the transition to ice XIII", Journal of Chemical Physics 129 164513 (2008)