Rosentsveig, "Intramolecular hydrogen bonds in the sulfonamide derivatives of oxamide, dithiooxamide
, and biuret.
The ligands (1 and 3) were synthesized by condensation reactions of two equivalents of aldehyde with dithiooxamide in DMF under reflux for 24 h, according to the procedure previously reported [39, 40].
In the present work, we reported the synthesis and characterization of two new boron compounds derived from dithiooxamides. They present greater stability in the solid state than in solution; however compound 2 was unstable in solution, obtaining an X-ray structure for a mononuclear species.
Finally the MWCNT-COCl was reacted with dithiooxamide in shorter time and under lower temperature than previous reported methods (Tahermansouri et al., 2013; Barbara et al., 2011; Yang et al., 2009) and then the dithiooxamide functionalised MWCNT was used as a sorbent to remove the toxic Hg(II) ions in different aqueous solutions.
The multi-walled carbon nanotubes (MWCNT), thionylchloride, triethanolamine, dimethylformamide (DMF), dithiooxamide (ligand), sulphuric acid, and nitric acid were used without further purification.
3.0 g of MWCNT-COC1 has been dispersed using ultrasonic in DMF as solvent and 0.5 g of dithiooxamide and 0.3 mL of triethanolamine were added to the mixture, subsequently (Scheme 1).
Dithiooxamide (DTO) has similar molecular structure to thiourea (thiooxamide) molecule and it includes more sulfur (S) donor atoms.
Synthesis of Dithiooxamide Formaldehyde Copolymer Resin
Abdul-Ghani, "Synthesis and characterization of new schiff bases derived from N (1)-substituted isatin with dithiooxamide
and their co(II), Ni(II), Cu(II), Pd(II), and Pt(IV) complexes," Bioinorganic Chemistry and Applications, vol.
R., 1992, "Synthesis and Characterization of Oxomolybdenum(V) Complex with Dithiooxamide
Synthesis of 2,3-dimine-1,4-dithiarine (LI): 0.92 g (0.02 mol) of KOH was added to ethanolic solution of dithiooxamide
1.202 g (0.01mol) under heating for 5 min until all diothiooxamide was reacted.
Desseyn, "The infrared spectra of complexes with planar dithiooxamides