Ft nmr avance 3 500 mhz

Elemental analysis of carbon and hydrogen, were carried out in a Vario Micro Cube. Infrared spectra were recorded using KBr pressed pellets with a Perkin-Elmer Spectrum GX FTIR spectrometer (MAGNA FTIR 750, Nicolet) in the region of 4000–400 cm⁻¹ region. Paramagnetic ¹H NMR spectra were recorded in a Bruker FT-NMR Avance III 500 MHz with deuterated solvents as internal standards. Matrix-assisted laser desorption/ionization-time of flight (MALDI–TOF) mass spectrometric data were acquired on a MALDI–TOF Synapt G2-S HDMS without additional matrix compound other than the sample itself. The absorption spectra were acquired at room temperature for diluted (2.0 × 10⁻⁶ M) DMSO (spectrophotometric grade) solutions on a Cary 500 Scan UV–vis–NIR spectrophotometer using a 1 cm quartz cell. Emission spectra were recorded at room temperature for diluted (2.0 × 10⁻⁶ M) DMSO (spectrophotometric grade) solutions on a Cary Eclipse Fluorescence spectrophotometer using a 1 cm quartz cell.

NMR spectra were recorded on a Bruker FT–NMR Avance III 500 MHz instrument at 500.32 (¹H) MHz in CD₃CN at ambient temperature. Chemical shifts were referenced relative to the solvent signal for ¹H nucleus.