⬠ Pentagonal bipiramida
KS = 7 • sp³d³ gibridlanish • 72° va 90° • Simmetriya: D₅h
📋 Asosiy ma'lumotlar
Pentagonal bipiramida — markaziy atom atrofida 7 ta ligand joylashgan. 5 ta ligand ekvatorial tekislikda (muntazam beshburchak, 72°), 2 ta ligand aksial o'qda (90°). KS = 7 nisbatan kam uchraydi.
Geometrik xususiyatlar
- • KS: 7
- • Gibridlanish: sp³d³
- • Burchaklar: 72° (ekv), 90° (aksial-ekv)
- • Simmetriya: D₅h
Gibridlanish
s + 3p + 3d → 7 ta sp³d³
5 tasi ekvatorial (72°), 2 tasi aksial (90°)
⭐ Misollar
| Formula | Nomi | Markaziy ion | Ion radiusi |
|---|---|---|---|
| [V(CN)₇]⁴⁻ | geptasiyanovanadat(III) | V³⁺ (3d) | Kichik |
| [ZrF₇]³⁻ | geptaftorosirkonat(IV) | Zr⁴⁺ (4d⁰) | Katta |
| [UF₇]³⁻ | geptaftorouranat(IV) | U⁴⁺ (5f²) | Juda katta |
📋 KS = 7 uchun alternativ shakllar
Pentagonal bipiramidaD₅h5 ekv + 2 aksial
Monoyopiq trigonal prizmaC₂vPrizma yuzi ustida qo'shimcha ligand
Monoyopiq oktaedrC₃vOktaedr yuzi ustida qo'shimcha ligand
✅ Asosiy xulosalar
- KS = 7, sp³d³ gibridlanish
- Burchaklar: 72° (ekv) va 90° (aksial)
- Asosan katta ion radiusli metallar uchun
- Muhim misol: [V(CN)₇]⁴⁻