31 P)] and thermal (TG, DTA and DSC) analysis. The TG analysis shows single-step decomposition of the complex to Sb 2 S 3 . These complexes have been screened for antibacterial and antifungal activity using the disc diffusion method. All the complexes have shown good activity as antibacterial and antifungal agents, which increased on increasing the concentration. Chloroamphenicol and terbinafin were used as standards for the comparison.herein some new mixed bis(dialkyldithiocarbamato)antimony(III) complexes with diphenyldithiophosphate and diphenyldithiophosphinate with their spectral, thermal and antimicrobial studies.
EXPERIMENTAL
Materials and methodsSodium/ammonium dialkyldithiocarbamates (E. Merck/ Fluka) were used as received. Antimony trichloride (E. Merck) was distilled before use. Arsenic trichloride was synthesized 24 and used after distillation. The reactants, such as ammonium diphenyldithiophosphate, 25 sodium diphenyldithiophosphinate 26 and bis(dialkyldithiocarbamato)antimony(III) chloride, 27 were prepared using previously reported methods. Solvents (benzene, acetone, hexane, diethyl ether, alcohols, etc.) were purified and dried by standard methods 28 before use. Melting points were determined in sealed capillary tubes.
Physical measurementsMelting points (only for solid compounds) were determined on a B10 tech India melting point apparatus and are uncorrected. Arsenic and antimony were estimated Studies of bis(N,N-dialkyldithiocarbamato)arsenic(III) and antimony(III) 407 s = singlet, t = triplet, q = quartet and m = complex pattern. a A = (Me 2 NCS 2 ) 2 SbS 2 P(OC 6 H 5 ) and B = (Et 2 NCS 2 ) 2 SbS 2 P(OC 6 H 5 ). b Exo., exothermic process; endo., endothermic process.