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硅酸盐的比较晶体化学研究表明,在某些含钛（锆）的硅酸盐的晶体结构中,有Ti—O（Zr-O）八面体和四方单锥对Si-O四面体的功能性替代现象存在.因此它们可以称为钛硅酸盐和锆硅酸盐.比较方石英与钙钛矿、长石与石榴石的晶体结构,情况类似,也表明存在四面体SiO4（AlO4）被八面体SiO6（AlO6）功能性替代的现象.作为一个新概念,提出了配位多面体功能性替代以利对比有关的晶体结构.
Comparative crystallographic studies of silicates have shown that there are Ti-O (Zr-O) octahedra and tetragonal mono-cones on Si-O tetrahedra in the crystal structure of certain titanic (zirconium) containing silicates They are termed as titanosilicates and zirconosilicates, which are similar to the crystal structures of perovskites, feldspar and garnet, and indicate the presence of tetrahedral SiO 4 (AlO 4) Octahedral SiO6 (AlO6) functional substitution phenomenon. As a new concept, the coordination polyhedron functional substitution for the benefit of contrast-related crystal structure.