Enumeration of four-conneeted three-dimensional nets. II. Conversion of edges of three-connected 2D nets into zigzag chains

Four-connected three-dimensional (3D) nets were systematically enumerated b y converting some horizontal edges of a vertical stack of three-connected t wo-dimensional (2D) nets into vertical zigzag chains, 77 out of 131 2D nets were selected for enumeration, and different arrangements of zigzag edges and horizontal edges were investigated. This yielded 138 3D nets of which 1 9 are represented by known structures: cristobalite; tridymite; MAPO-39 (In ternational Zeolite Association Structure Commission code ATN); svyato-slav ite; Li-A(BW) (ABW); cancrinite (CAN): AlPO-31 (ATO): MAPO-36 (ATS): BaFe2O 4: 'nepheline hydrate' (JBW): bikitaite (BIK), KBGe2O6; CsAlSi5O12 (CAS): U iO-6 (OSI): Theta-1 (TON); ZSM-12 (MTW); ZSM-23 (MTT): AlPO-53C: and CIT-5 (CFI).