Structure types – a review

摘要: Structures of binary inorganic AxBy compounds with A and B on two Wyckoff positions are characterized by the self-coordination numbers Ti, i = 1–3, atoms. The T1 0–12 values 122 structure types can be correlated different topologies, A–A interactions densities. High like 12 obtained for fcc or hcp sphere packing maximum density atoms interstitial Hexagonal tetragonal layered recognized Ti 6 4 4. 2 found chains, T1= 1 ordered molecules N2 Br2. few NaCl CsCl form a pc bcc packing. 0 Na Cs indicate repulsive Na–Na Cs–Cs interactions. Distorted structures type recognized, if slightly B–B distances included in proper coordination shells. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)