See what you will probably never see in reality, thanks to the PCOD

Two-dimensional aluminoborate models (not DFT-optimized) as predicted by GRINSP

Models selected among 4138 CIFs (PCOD 2009 update) including 3D, 2D, 1D and 0D aluminoborates - AlO6 octahedra or trigonal prisms connected to BO3 triangles exclusively by corner-sharing.

Note that these models are not electrically neutral

Not exhaustive list (more will be added during the next weeks, maybe)...

References for these predictions :

1- Inorganic structure prediction with GRINSP. A. Le Bail, J. Appl. Cryst. 38 (2005) 389-395.
2- Predicted corner-sharing titanium silicates. A. Le Bail, Z. Kristallogr., Suppl. 26 (2007) 203-208.
3- Powerpoint file : Contribution to the "Gordon Conference Style" Workshop : Global Optimisation Techniques Applied to the Prediction of Structures, 5-7 July 2006, University College London (.ppt or zipped)
4- Advances in structure prediction of inorganic compounds. A. Le Bail, Report of 2nd Algerian Crystallography Congress, AlgĂ©rie (2005).
5- Hypothetical AlF3 crystal structures, A. Le Bail, F. Calvayrac, J. Solid State Chem., 179 (2006) 3159-3166.
6- Inorganic structure prediction: too much and not enough, A. Le Bail, Solid State Phenomena 130 (2007) 1-6.
7- Frontiers between crystal structure prediction and determination by powder diffractometry, A. Le Bail, Powder Diffraction, S23 (2008) S5-S12.
8- Databases of virtual inorganic crystal structures and their applications, A. Le Bail, Phys. Chem. Chem. Phys. 12 (2010) 8521-8530. DOI: 10.1039/c003907c
Etc - search by yourself after all...

PCOD6100365   [AlB12O21]-3   CIF

PCOD6100186   [AlB20O33]-3   CIF

PCOD6100825   [AlB12O21]-3   CIF

PCOD6101051   [AlB22O36]-3   CIF

PCOD6101057   [AlB22O36]-3   CIF

PCOD6102320   [AlB12O21]-3   CIF

PCOD6101420   [AlB14O24]-3   CIF

PCOD6100627   [AlB18O30]-3   CIF

PCOD6100626   [AlB14O24]-3   CIF

PCOD6100219   [AlB8O15]-3   CIF

PCOD6100220   [Al2B18O33]-6   CIF

PCOD6100544   [Al3B22O42]-9   CIF

PCOD6100133   [Al5B18O42]-15   CIF

PCOD6103414   [Al3B4O15]-9   CIF

PCOD6102043   [AlB2O6]-3   CIF

PCOD6103363   [Al2B6O15]-6   CIF

PCOD6103418   [AlB14O24]-3   CIF

PCOD6103486   [AlB2O6]-3   CIF

PCOD6102508   [AlB14O24]-3   CIF

PCOD6103754   [AlB2O6]-3   CIF

PCOD6101438   [Al2B10O21]-6   CIF

PCOD6100316   [AlB12O21]-3   CIF

PCOD6103373   [AlB12O21]-3   CIF

PCOD6101948   [AlB6O12]-3   CIF

PCOD6101099   [Al2B14O27]-6   CIF

PCOD6103786   [AlB6O12]-3   CIF

PCOD6101726   [AlB4O9]-3   CIF

PCOD6103393   [AlB8O15]-3   CIF

PCOD6103475   [AlB8O15]-3   CIF

PCOD6103454   [AlB4O9]-3   CIF

PCOD6100318   [Al3B34O60]-9   CIF

PCOD6103797   [AlB14O24]-3   CIF

PCOD6100103   [AlB20O33]-3   CIF

PCOD6103413   [AlB8O13]-3   CIF

PCOD6102363   [AlB4O9]-3   CIF

PCOD6100533   [Al6B2O21]-18   CIF