ASU-16 an open framework germanate J. Plévert et al. J. Am. Chem. Soc. 123, 12706-12707 (2001). (publication # 220 ).

ASU-31 a supertetrahehral indium sulfide.H. Li et al. Science 283, 1145-1147 (1999). (Publication # 194 )

T2222 a Supersupertetrahedron see H. Li et al Angewandte Chemie 42, 1819-1821 (2003)

MOF-5 The archetypical MOF (Metal-organic Framework) See H. Li et al. Nature, 402, 276-279 (1999) .

MOF-5 The original picture in Nature. Was this the first yellow ball?

IRMOF-16 An example or a MOF isoreticular (having the same framework topology as MOF-5) see M. Eddaoudi et al. Science, 295, 469-472 (2002) .

COF-100 This polyhedron is the basis of a giant gage in ZIF-100. Nature 453, 207 (2008)

Monster This is a polyhedron with 26 faces that fills (tiles) space with all polyhedra related by a lattice translation (so there are 13 pairs of opposite faces) See M. O'Keeffe, Z. Kristallogr. 214, 438-442 (1999).

lcs This may be my favorite structure. It is a space filling tiling by one kind of tile. The tiles form rods in 4 different directions. The vertices are the positions of invariant lattice complex S* and form a 4-coordinated net with only 6-rings. See O. Delgado-friedrichs, J. Plévert, M. O'Keeffe. Acta Crystallogr. A58, 71-79 (2002).

fiv This is a nice net in which all the (strong) rings are 5-rings. Apart from its intrinsic beauty, it is nice because it illustrates the important (but not well enough known) structure of NaZn13. The Na atoms are in the karge polyhedron which has 24 faces, and the Zn atoms (two kinds) are in the pentagonal dodecahedra.

ith-d This is another net with all 5-rings. In the tiling all the faces are the same (face transitive) but different on opposite sides (as a coin).

fsn Yet another face-transitive tiling with pentagonal faces. It is tile transitive too. The net is the Si,P net of the cubic form of SiP2O7

PAU This is the framework of the zeolite paulingite shown as a tiling of space. [The tiles are shrunk in the picture – in reality they join together to completely fill space.]

kgn this is a 7^3 tiling of a surface topologically the same as the P periodic minimal surface

Peggy at 2 years old (April 2007)

Lyon2007 some of the participants at the CECAM workshop on nets etc.

Shanballymore 1906 Shanballymore, Co Cork, Ireland. My father is sitting on the extreme right.