Carbon-13 NMR spectra of dithiocarbamates. Chemical shifts, carbon-nitrogen stretching vibration frequencies and .pi.-bonding in the NCS2 fragment

Synthesis, characterization and antifungal activity of new dithiocarbamate-based complexes of Ni(II), Pd(II) and Pt(II)

“…Higher values of the stretching frequency of N-C bond indicates a higher double bond character. It causes an intense p-electron circulation at the N-C contact, and therefore decreases the net magnetic field experienced by the N 13 CS 2 , since it is located in the diamagnetic zone of the molecule [35]. Consequently lower values of 13 C chemical shift (d) have been observed.…”

Preparation, spectroscopic, thermal and powder X‐ray diffraction characterization, and antimicrobial activities of mixed bis(O,O′‐diisopropyldithiophosphato‐S,S′)antimony(III) derivatives with some oxygen and sulfur donor ligands

“…The IR spectra are shown in the supporting information. The assignments were made on the basis of earlier reports and by comparing with the spectra of free acids and salts. These derivatives showed medium to strong intensity bands in the regions 1015.2–1021.5 and 875.3–890.7 cm −1 which are assigned to ν((P)OC) and ν(PO(C)), respectively .…”

Practical Synthesis of Aromatic Dithiocarbamates

“…The 13 C NMR spectra of these diaryl DTCs revealed thiocarbonyl signals at δ 219–224 ppm, more downfield than those produced by dialkyl DTCs (δ 200–210 ppm). [26] However, DTC formation from deprotonated N -( p -nitrophenyl)- N -phenylamine 4 or N,N -bis( p -nitrophenyl)amine 6 was sluggish and did not reach completion regardless of reaction temperature or the amount of CS 2 added, with only trace amounts of DTC formed based on 13 C NMR analysis (entries 5 and 6). The poor reactivity was attributed to the reduced nucleophilicity of the amide anion by one or both nitro groups.…”