Material Name:	VPI-5
	Chemical Formula:	|(H2O)42 | [Al18P18O72]-VFI
	Unit Cell:§	hexagonal	P 63 (# 173)
		a' = 18.9750 Å	b' = 18.9750 Å	c' = 8.1040 Å
		α' = 90.000°	β' = 90.000°	γ' = 120.000°
	Framework Density:	14.2 T/1000 Å3

Channels:

[001] 18 12.7 x 12.7* Dimensionality   Sorption (molecular cross section > 3.4Å): 1-dimensional   Topological (pore opening > 6-ring): 1-dimensional

	References:
		Davis, M.E., Saldarriaga, C., Montes, C., Garces, J. and Crowder, C.
			"A molecular sieve with eighteen-membered rings"
			Nature, 331, 698-699 (1988)
			Material name:   VPI-5
			Chemical formula:   [Al18P18O72]-VFI
	§	McCusker, L.B., Baerlocher, Ch., Jahn, E. and Bülow, M.
			"The triple helix inside the large-pore aluminophosphate molecular sieve VPI-5"
			Zeolites, 11, 308-313 (1991)
		Richardson Jr., J.W., Smith, J.V. and Pluth, J.J.
			"Theoretical nets with 18-ring channels: enumeration, geometrical modelling, and neutron diffraction study of AlPO4-54"
			J. Phys. Chem., 93, 8212-8219 (1989)
			Material name:   VPI-5
			Chemical formula:   [Al18P18O72]-VFI

	Name and Code derivation:
		Virgina Polytechnic Institute - five   VPI-5 (five)   VFI

§	Chemical Formula and Unit Cell taken from the reference marked with this sign