2004 series 2 chn elemental analyzer

All commercially available reagents and other solvents were purchased from Aldrich and Merck chemical Co. and used without further purification. The NMR spectra were recorded with a Bruker DRX-300 AVANCE instrument (300 MHz for ¹H and 75.4 MHz for ¹³C) with DMSO-d₆ as solvent. Chemical shifts are given in ppm (δ), and coupling constant (J) are reported in Hertz (Hz). Melting points were measured with an electrothermal 9100 apparatus. Mass spectra were recorded with an Agilent 5975C VL MSD with Triple-Axis detector operating at an ionization potential of 70 eV. IR spectra were measured with Bruker Tensor 27 spectrometer. Elemental analyses for C, H and N were performed using a PerkinElmer 2004 series [II] CHN elemental analyzer.

The 1,1-bis(methylthio)-2-nitroethene, different diamines, cysteamine hydrochloride, 1,3-indandione, malononitrile, p-TSA and solvents were obtained from Sigma Aldrich and Fluka Co. used without further purification. IR spectra: Bruker Tensor 27 spectrometer. NMR spectra: Bruker DRX-300 Avance instrument (300 MHz for ¹H and 75.4 MHz for ¹³C) with DMSO-d₆ as solvents. Chemical shifts are expressed in parts per million (ppm), and coupling constant (J) are reported in hertz (Hz). Mass spectra: Agilent 5975C VL MSD with Triple-Axis detector operating at an ionization potential of 70 eV. Elemental analyses were performed using a PerkinElmer 2004 series [II] CHN elemental analyzer.