Intergrowth Family UZM-55

1-dimensional stacking disorder

Periodic Building Unit


Periodic Building Unit (PerBU):	UZM-55 layer

Layer symmetry	P -1

2D cell parameters	a = 17.80 Å	b = 12.42 Å	gamma = 90°

References
	Mowat, J.P.S., Sinkler, W. and Nicholas, C.P.
		"DIFFaX Modeling of Faulting in the Triclinic Zeolite UZM-55 and Description of a New Polymorph: UZM-55FM"
		Cryst. Growth Des., 19, 5961−5966 (2019)

Connectivity pattern

Examples

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

Symmetry Operation^*	Translation^*	Comment	Image
i		one inversion center shown as a blue open circle in the example
2		one two-fold axis shown as a blue arrow or a blue ellipse in the example


Effect on channel system
	The disorder does not block the 1-dimensional 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).


Polymorph UZM-55

Cell Parameters:	triclinic	P -1: (# 2)
	a = 12.4264 Å	b = 12.5305 Å	c = 18.0517 Å
	α = 87.0000°	β = 90.7500°	γ = 106.7200°
	Volume =	2688.3 Å³
Framework Density (FD_Si):	19.3

	Ring sizes (# T-atoms):	12 8 6 5 4
	Channel dimensionality:	Topological (pore opening > 6-ring): 1-dimensional

Maximum diameter of a sphere:
	that can be included	5.79 Å
	that can diffuse along	a: 1.75 Å	b: 1.85 Å	c: 4.96 Å
		[0 0 1] : 4.96 Å
		addional volume data

Composite Building Units:


cas	bik	mel

In this space group and setting, the PerBUs are stacked along [001]
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


Polymorph UZM-55FM

Cell Parameters:	monoclinic	P 1 2/c 1: (# 13)
	a = 17.8023 Å	b = 12.4185 Å	c = 24.7127 Å
	α = 90.0000°	β = 91.5800°	γ = 90.0000°
	Volume =	5461.3 Å³
Framework Density (FD_Si):	19.0

	Ring sizes (# T-atoms):	12 8 6 5 4
	Channel dimensionality:	Topological (pore opening > 6-ring): 1-dimensional

Maximum diameter of a sphere:
	that can be included	6.26 Å
	that can diffuse along	a: 5.45 Å	b: 1.97 Å	c: 1.61 Å
		[1 0 0] : 5.45 Å
		addional volume data

Composite Building Units:


cas	bik	mel

In this space group and setting, the PerBUs are stacked along [001]
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