A highly crystalline microporous hybrid organic-inorganic aluminosilicate resembling the AFI-type zeolite.

ECS-14, a crystalline microporous hybrid organic–inorganic aluminosilicate, has been synthesized by using 1,4-bis-(triethoxysilyl)-benzene (BTEB) as a source of silica. Its structure contains a system of linear channels with 12-membered ring openings, running along the [001] direction, resembling the pore architecture of the AFI framework type.