Material Name:	SAPO-40
	Chemical Formula:	|(TPA+)2 (OH)2|2 [Si4Al14P14O64]2-AFR TPA+ = C12H28N+ = tetrapropylammonium ion = tetrapropylazanium SMILES: CCC[N+](CCC)(CCC)CCC   Images:  stick or 3D
	Unit Cell:§	orthorhombic	P c c n (# 56)
		a' = 21.9440 Å	b' = 13.6910 Å	c' = 14.2490 Å
		α' = 90.000°	β' = 90.000°	γ' = 90.000°
		(Relationship to unit cell of Framework Type: a' = a, b' = b, c' = 2c)
	Framework Density:	15.0 T/1000 Å3

Channels:

[001] 12 6.7 x 6.9* <-> [010] 8 3.7 x 3.7* Dimensionality   Sorption (molecular cross section > 3.4Å): 2-dimensional   Topological (pore opening > 6-ring): 2-dimensional

	References:
		Estermann, M.A., McCusker, L.B. and Baerlocher, Ch.
			"Ab initio Structure Determination from Severely Overlapping Powder Diffraction Data"
			J. Appl. Crystallogr., 25, 539-543 (1992)
			Material name:   SAPO-40
			Chemical formula:   [Si4Al14P14O64]2-AFR
	§	McCusker, L.B. and Baerlocher, Ch.
			"A re-examination of the structure of SAPO-40"
			Microporous Materials, 6, 51-54 (1996)
		Dumont, N., Gabelica, Z., Derouane, E.G. and McCusker, L.B.
			"Characterization and Rietveld refinement of the large pore molecular sieve SAPO-40"
			Microporous Materials, 1, 149-160 (1993)
			Material name:   SAPO-40
			Chemical formula:   [Si4Al14P14O64]2-AFR

	Name and Code derivation:
		Silico-Aluminophosphate-forty   SAPO-40 (forty)   AFR

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