FT-IR (6600-50 cm⁻¹) and FT-Raman (3500—70 cm⁻¹) Studies of the Tetranuclear Bismuth (III) Complex (C₅H₅NH)₆Bi₄Cl₁₈.

Abstract

The FT-IR and FT-Raman spectra of the tetranuclear Bi(III) complex Bi(C₅H₅NH)₆Bi₄Cl₁₈ are investigated. The spectroscopic data reflect the non-equivalence of the pyridinium ions and suggest a strong distortion of the octahedral structure for the Bi₄Cl₁₈ group. The near-infrared data show that like in the fundamental region, protonation of pyridine results in a frequency increase of several combination bands.

Key Words:

• Bismuth (III) complex
• pyridinium ion
• FT-IR and FT-Raman spectra