name

Names may be any of a variety commonly used. Thus the net with symbol srs is often called SrSi2 or (10-3)-a.; cab is CaB6. Mineral names are often used for nets of either the underlying framework (quartz, feldspar) or the entire structure (rutile, pyrite). Obviously it is not desirable to have a proliferation of names, so not all names that are known by the database are shown.

For some structures we also give the Fischer symbol as a name. These symbols apply to homogeneous (vertex-transitive) sphere packings and are of the sort p/q/rn where p is the coordination number, q is the smallest ring size, r is a symbol for the crystal system (c = cubic, t = tetragonal, h = hexagonal) and n is a serial number for given pqr. See "about" for references to Fischer's work.

Names also function as a specialized keyword. For example one may find tilings with certain large (20 or more faces) tiles by entering a "name":

name face symbol RCSR symbol

alpha cage [4^12.6^8.6^6] tcz

FAU cage [4^18.6^4.12^4] fac

TSC cage [4^24.6^8.8^18] tsz

icosahedron [3^20] ico

C60 [5^12.6^20] tic

hexagonal barrel [5^12.6^8] hxb

tennis ball [5^12.6^8] tbl

Other special "names"

carbon - retrieves 3-coordinated nets that are carried by tilings of the P. D or G minimal surfaces

silica - retrieves nets of known tectosilicates (such as coesite, feldspar) and related tetrahedral nets (e.g. that of CaGa2O4) other than recognized zeolite nets

square - retrieves 4-coordinated nets with square coordination of all vertices

ZMOF - these are zeolite-like nets known only in MOFs