Intergrowth Family HPM-14

Periodic Building Unit


Periodic Building Unit (PerBU):	HPM-14 layer

Layer symmetry	P m m (2)

2D cell parameters	a = 10.27 Å	b = 23.10 Å	gamma = 90°

References
	Gao, Z.R., Li, J., Lin, C., Mayoral, A., Sun, J., and Camblor, M.A.
		"HPM-14: A New Germanosilicate Zeolite with Interconnected Extra-Large Pores Plus Odd-Membered and Small Pores"
		Angew. Chem. Int. Ed., 60, 3438–3442 (2021)

Connectivity pattern

Examples

The layers are stacked along the [001] direction using the following connectivity patterns

Symmetry Operation^*	Translation^*	Comment	Image
	-1/4 a + 1/2 b
	+1/4 a + 1/2 b

^* relative to the previous layer

In both cases, adjacent layers are related to one another by Inversion centers ( i ). The position of i determines which layer is generated.


Effect on channel system
	The disorder does not block the channel system

Simplest ordered end members

The color of each layer reflects the symmetry/translation operation used to generate it from the previous layer (see table above).

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Polymorph HPM-14_A

Cell Parameters:	monoclinic	C 1 2/m 1: (# 12)
	a = 22.8476 Å	b = 23.0970 Å	c = 10.2660 Å
	α = 90.0000°	β = 102.9200°	γ = 90.0000°
	Volume =	5280.3 Å³
Framework Density (FD_Si):	15.2

	Ring sizes (# T-atoms):	16 9 8 5 4
	Channel dimensionality:	Topological (pore opening > 6-ring): 3-dimensional

Maximum diameter of a sphere:
	that can be included	8.89 Å
	that can diffuse along	a: 4.17 Å	b: 4.17 Å	c: 8.1 Å
		[0 0 1] : 8.1 Å
		addional volume data

Composite Building Units:


	d4r

In this space group and setting, the PerBUs are stacked along [100].
Adjacent layers generated by the same connectivity pattern (same basic color) are shown with different shades for clarity.

	Note: This polymorph has NOT been observed as a pure ordered material

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Polymorph HPM-14_B

Cell Parameters:	orthorhombic	P b m n: (# 53)
	a = 22.2657 Å	b = 23.0980 Å	c = 10.2695 Å
	α = 90.0000°	β = 90.0000°	γ = 90.0000°
	Volume =	5281.6 Å³
Framework Density (FD_Si):	15.1

	Ring sizes (# T-atoms):	16 9 8 5 4
	Channel dimensionality:	Topological (pore opening > 6-ring): 3-dimensional

Maximum diameter of a sphere:
	that can be included	8.83 Å
	that can diffuse along	a: 4.17 Å	b: 8.32 Å	c: 4.17 Å
		[0 1 0] : 8.32 Å
		addional volume data

Composite Building Units:


	d4r

In this space group and setting, the PerBUs are stacked along [100]

	Note: This polymorph has NOT been observed as a pure ordered material