Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: Ko te α-BiF3 he hanganga tioata paetahi (Pearson tohu cF16, roopu mokowhiti Fm-3m, Nama 225). Ko te BiF3 te tauira mo te hanganga DO3, i tangohia e etahi intermetallics, tae atu ki te Mg3Pr, Cu3Sb, Fe3Si, me te AlFe3, me te hydride LaH3.0. Ko te pūtau kōwae he pūtau mata-whakatū ki te Bi i te mata pokapū me ngā tihi, me F i te pae octahedral (nga pito waenganui, pokapū), me ngā pae tetrahedral (pokapū o te 8 sub kōpae) - na te pūtau taketake kei roto 4 Bi me 12 F. Hei kōwhiringa, ki te pūtau kōwae neke (1/4,1/4,1/4) te whakaahuatanga e taea o te pūtau fcc ki mata, mata, kokonga, me pokapū ki tonu ki F, me te hawhe (4 o) te pokapū octant ki F, te hawhe atu ki Bi (katoa octant momo tetrahedrally whakaritea). Ko te roa o te pito o te pūtau BiF3 ko 0.5853 nm. Ko te β-BiF3 he hanganga YF3 kei reira te ngota bismuth kua whakarereke i te 9 te whakakotahitanga, te prism trigonal tricaped. Ko tenei hanganga e kiia ana he ionic, ka rereke ki nga fluorides o nga mema maama o te roopu 15, phosphorus trifluoride, PF3, arsenic trifluoride, AsF3 me te antimony trifluoride, SbF3, kei reira nga waeine ngota MX3 kei roto i te solid.  Patai: He aha te tohu a Pearson mo te hanganga tioata kiwi?
cF16 ngā