Material Name:	MCM-61
	Chemical Formula:	|K6.3 (18-crown-6)3|1/3 [Al6.3Si83.7O180]1/3-MSO 18-crown-6 = C12H24O6 = 18-crown-6 ether = 1,4,7,10,13,16-hexaoxacyclooctadecane SMILES: C1COCCOCCOCCOCCOCCO1 Images:  stick or Show Model
	Unit Cell:	rhombohedral	R -3 m (# 166)
		a' = 11.8410 Å	b' = 11.8410 Å	c' = 11.8410 Å
		α' = 93.290°	β' = 93.290°	γ' = 93.290°
		(hexagonal setting: a = 17.220Å, c = 19.296Å)
	Framework Density:	18.2 T/1000 Å3

Channels:

apertures formed by 6-rings only Dimensionality   Sorption (molecular cross section > 3.4Å): 0-dimensional   Topological (pore opening > 6-ring): 0-dimensional

	References:
		Shantz, D.F., Burton, A. and Lobo, R.F.
			"Synthesis, structure solution and characterization of the aluminosilicate MCM-61: the first aluminosilicate clathrate with 18-membered rings"
			Microporous Mesoporous Mat., 31, 61-73 (1999)
		Valyosik, E.W.
			"Synthetic porous crystalline MCM-61, its synthesis and use"
			US Patent, , 5,670,131 (1997)
			Material name:   MCM-61
			Chemical formula:   [Al6.3Si83.7O180]1/3-MSO

	Name and Code derivation:
		Mobil Composition of Matter - sixty-one   MCM-61 (sixty-one)   MSO