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

Three-dimensional aluminoborate models (not DFT-optimized) with lowest framework density (FD) 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.   http://journals.iucr.org/j/issues/2005/02/00/cg5019/
2- Predicted corner-sharing titanium silicates. A. Le Bail, Z. Kristallogr., Suppl. 26 (2007) 203-208. https://www.researchgate.net/publication/228093494_Predicted_corner-sharing_titanium_silicates
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).  http://arxiv.org/abs/cond-mat/0606025
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...


PCOD6100016   [AlB30O48]-3   FD = 10.95   CIF

PCOD6100053   [AlB12O21]-3   FD = 11.46   CIF

PCOD6100194   [AlB12O21]-3   FD = 11.51   CIF

PCOD6100007   [AlB28O45]-3   FD = 11.73   CIF


PCOD6100715   [AlB12O21]-3   FD = 12.05   CIF

PCOD6100072   [AlB12O21]-3   FD = 12.13   CIF

PCO6100298   [AlB12O21]-3   FD = 12.15   CIF

PCOD6100188   [AlB18O30]-3   FD = 12.17   CIF

PCOD6100049   [AlB12O21]-3   FD = 12.20   CIF

PCOD6101495   [AlB10O18]-3   FD = 12.25   CIF

PCOD6100734   [Al2B18O33]-6   FD = 12.30   CIF

PCOD610930   [Al4B6O21]-12   FD = 12.33   CIF

PCOD6100180   [AlB12O21]-3   FD = 12.35   CIF

PCOD6100399   [AlB12O21]-3   FD = 12.44   CIF

PCOD6101346   [AlB10O18]-3   FD = 12.46   CIF

PCOD6100578   [AlB12O21]-3   FD = 12.49   CIF

PCOD6100512   [AlB10O18]-3   FD = 12.54   CIF

PCOD6100770   [AlB10O18]-3   FD = 12.62   CIF

PCOD6101005   [AlB12O21]-3   FD = 12.69   CIF

PCOD6101436   [Al3B28O51]-9   FD = 12.76   CIF


PCOD6101472   [AlB10O18]-3   FD = 12.81   CIF

PCOD6100851   [AlB12O21]-3   FD = 12.81   CIF

PCOD6101090   [AlB10O18]-3   FD = 12.82   CIF

PCOD6100020   [AlB14O24]-3   FD = 13.33   CIF

PCOD6100310   [AlB26O42]-3   FD = 13.40   CIF

PCOD6100008  [AlB10O18]-3   FD = 13.54   CIF

PCOD6100006   [AlB18O30]-3   FD = 13.89   CIF

PCOD6100280   [AlB8O15]-3   FD = 14.47   CIF

PCOD6100027   [AlB4O9]-3   FD = 14.66   CIF

PCOD6100042   [AlB6O12]-3   FD = 14.78   CIF

PCOD6101259   [Al3B4O15]-9   FD = 15.46   CIF

PCOD6100017   [Al2B6O15]-6  FD = 16.90   CIF

PCOD6100029      [Al2B6O15]-6   FD = 21.98   CIF