Material Name:	Deca-dodecasil 3R
	Chemical Formula:	|(AdaA)6 (N2)9 | [Si120O240]-DDR AdaA = C10H17N = 1-aminoadamantane = adamantan-1-amine SMILES: C1C2CC3CC1CC(C2)(C3)N   Images:  stick or 3D
	Unit Cell:	trigonal	R -3 m (# 166)
		a' = 13.8600 Å	b' = 13.8600 Å	c' = 40.8910 Å
		α' = 90.000°	β' = 90.000°	γ' = 120.000°
	Framework Density:	17.6 T/1000 Å3

Channels:

[001] 8 3.6 x 4.4** Dimensionality   Sorption (molecular cross section > 3.4Å): 2-dimensional   Topological (pore opening > 6-ring): 2-dimensional

	References:
		Gies, H.
			"Studies on clathrasils. IX. Crystal structure of deca-dodecasil 3R, the missing link between zeolites and clathrasils"
			Z. Kristallogr., 175, 93-104 (1986)

	Name and Code derivation:
		Deca- and dodecahedra, 3 layers, rhombohedral   Deca-dodecasil 3R   DDR