[Fe(C₅H₅)₂] — UB-Vis spektri tahlili

ferrosen • bis(siklopentadienil)temir(II) • Sendvich kompleks • d-d + MLCT

UB-Vis TahlilSendvich (D_5d)d⁶Diamagnit18 e⁻d-d + MLCT

[Fe(C₅H₅)₂]

186.04 g/mol

bis(η⁵-siklopentadienil)temir(II) — "FERROSEN"

UB-Vis spektrida ikkita asosiy polosa kuzatiladi: 440 nm (d-d, ε≈90) — ko'rinadigan sohada, to'q sariq rangga sabab; 325 nm (MLCT, ε≈50) — Fe²⁺ dan Cp halqasiga zaryad ko'chishi. Fe²⁺ (d⁶) + 2Cp⁻ (12e⁻) = 18 valent elektron — maksimal barqarorlik. Oksidlanganda ferroseniy [Fe(C₅H₅)₂]⁺ hosil bo'ladi — spektr o'zgaradi.

λ_max (d-d)

440 nm

λ_max (MLCT)

325 nm

ε (d-d)

~90

Rang

To'q sariq

Valent e⁻

18 ta

Fe−C masofa

2.04 Å

Oksidlanish

E° = +0.40 V

Konfiguratsiya

d⁶ (18e⁻)

Erituvchi: Etanol yoki geksanKonsentratsiya: ~10⁻⁴ MKyuveta: 1 cm kvarsHarorat: 25°C

📈 UB-Vis Spektri — Ferrosen

Chizilmoqda...

Grafik sxematik ko'rinish. d-d o'tishlar (440 nm) va MLCT (325 nm) ko'rsatilgan.

440 nmd-d (¹A₁g → ¹E₁g)

325 nmMLCT (Fe→Cp π*)

265 nmπ→π* (Cp ichki)

Asosiy xulosalar

d-d (440 nm, ε≈90) + MLCT (325 nm, ε≈50)
18-elektron qoidasi — maksimal barqarorlik, aniq spektr
To'q sariq rang — ko'k-binafsha nur yutilishi hisobiga
Oksidlanish: Ferrosen→Ferroseniy — yangi LMCT polosa (620 nm)

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