Bis(N-benzyl-N-furfuryldithiocarbamato-S,S′)mercury(II) as a precursor for the preparation of mercury sulfide nanoparticles

Gomathi, Govindaraju; Dar, Sajad Hussain; Thirumaran, S.; Ciattini, Samuele; Selvanayagam, S.

doi:10.1016/j.crci.2014.10.003

Cited by 23 publications

(14 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the peaks of the quaternary thiouride carbon atom (N C S 2 ) in the 13 C NMR spectra of 1 – 6 further confirmed formation of DTL1–DTL6 and these generally were observed to shift upfield upon complexation (Table ). This observation is attributed to metal–sulfur bond formation and the delocalization of an electron cloud in the four‐member (CS 2 M) chelate ring …”

Section: Resultsmentioning

confidence: 99%

Co(III) N,N′‐diarylformamidine dithiocarbamate complexes: Synthesis, characterization, crystal structures and biological studies

Oladipo

Omondi

Mocktar

2020

Applied Organom Chemis

View full text Add to dashboard Cite

Three symmetric N,N‐diarylformamidine dithiocarbamates, N,N′‐bis(2,6‐dimethylphenyl)formamidine dithiocarbamate (DTL1), N,N′‐bis(2,6‐disopropylphenyl)formamidine dithiocarbamate (DTL2) and N,N′‐dimesitylformamidine dithiocarbamate (DTL3), and three unsymmetric ones, N′‐(2,6‐dichlorophenyl‐N‐(2,6‐dimethylphenyl)formamidine dithiocarbamate (DTL4), N′‐(2,6‐dichlorophenyl)‐N‐(2,6‐diisopropylphenyl)formamidine dithiocarbamate (DTL5) and N′‐(2,6‐dichlorophenyl)‐N‐mesitylformamidine dithiocarbamate (DLT6), were reacted with chloridocobalt(III) in water to give Co‐(DTL1)3 (1), Co‐(DTL2)3 (2), Co‐(DTL3)3 (3), Co‐(DTL4)3 (4), Co‐(DTL5)3 (5) and Co‐(DTL6)3 (6). All the dithiocarbamates and complexes were characterized using 1H NMR, 13C NMR, Fourier transform infrared, UV–visible and mass spectra and the purity confirmed by elemental analysis. In addition, crystal structures of complexes 1, 2, 4 and 5 were determined, confirming the formation of mononuclear species in which the Co(III) centers coordinated to six sulfur atoms from three dithiocarbamate ligands resulting in distorted octahedral geometries. All complexes showed moderate to good antibacterial activities against Gram‐negative bacteria Escherichia coli, Salmonella typhimurium, Klebsiella pneumoniae and Pseudomonas aeruginosa even at low concentrations. None of the six were active against Gram‐positive bacterium methicillin‐resistant Staphylococcus aureus and only active against S. aureus at high concentrations. Complexes 5 and 6 were found to be more active than ciprofloxacin against S. typhimurium, E. coli, P. aeruginosa and K. pneumoniae and complexes with chloro‐substituted ligands generally had enhanced activities. Antioxidant activities of the dithiocarbamate salts and their Co(III) complexes were also investigated using DPPH assay and the complexes were found to be more efficient. Complex 2 with an IC50 value of 2.84 × 10−4 mM displayed the highest activity of all compounds tested, even outdoing ascorbic acid. The radical scavenging ability of the complexes followed the order 2 > 1 > ascorbic acid >3 > 4 > 6 > 5.

show abstract

Section: Resultsmentioning

confidence: 99%

Co(III) N,N′‐diarylformamidine dithiocarbamate complexes: Synthesis, characterization, crystal structures and biological studies

Oladipo

Omondi

Mocktar

2020

Applied Organom Chemis

View full text Add to dashboard Cite

show abstract

“…Given the importance of these nitrogen heterocyclic compounds, the development of mild, high yielding and clean synthesis of these important compounds is daunting challenge and has been extensively investigated in literatures [6][7][8][9][10][11][12]. The classical methods for the synthesis of quinazolinedione ring system are the reaction of anthranilic acid and their derivatives with isothiocyanates or their equivalents [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. However the difficult handling of unstable isothiocyanate as well as preparation of costly and toxic reagents, such as thiophosgene limits its practical applications.…”

Section: Introductionmentioning

confidence: 99%

Practical approach to 2-thioxo-2,3-dihydroquinazolin-4(1 H )-one via dithiocarbamate–anthranilic acid reaction

Azizi

Edrisi

2017

Chinese Chemical Letters

View full text Add to dashboard Cite

“…{Hg[S 2 CN(n-Bu) 2 ] 2 } 2 (165) [143], having motif L, had a value of τ = 0.48. There are non-systematic variations in the Hg-S bond lengths although the range of the Hg-S bond lengths is relatively narrow, as exemplified by the aforementioned {Hg[S 2 CN(Benzyl)CH 2 (2-furyl)] 2 } 2 (175) [158] structure, with two independent molecules, where the range of Hg-S bond lengths of 2.46 to 2.73 Å encompasses most of the Hg-S separations in the other structures, with two exceptions. Before discussing these, it is relevant to note the range of transannular interactions within the eight-membered {-HgSCS} 2 [162], whereby the transannular interactions are shorter than the bridging Hg-S bond to the symmetry-related mercury atom.…”

Section: Mercury Dithiocarbamatesmentioning

confidence: 99%

“…Being 2-fold symmetric, {Hg[S2CN(n-Bu)2]2}2 (165) [143] is assigned motif N, with the rest of the molecules being motif O. With two exceptions, the molecules adopting motif O are centrosymmetric; in {Hg[S2CN(Benzyl)CH2(2-furyl)}2 (175) [158], two independent centrosymmetric molecules comprise the asymmetric unit, and in {Hg[S2CN(Me)CH2Ph]2}2 (171) [160], the molecule crystallises across a non-crystallographic centre. The mercury containing structures resemble the zinc analogues more than the cadmium structures, as the transannular Hg … S interaction is generally long, at least when compared to the sum of the van der Waals radii of 3.35 Å [20].…”

Section: Mercury Dithiocarbamatesmentioning

confidence: 99%

See 1 more Smart Citation

Exploring the Topological Landscape Exhibited by Binary Zinc-triad 1,1-dithiolates

Tiekink

2018

Crystals

View full text Add to dashboard Cite

Abstract:The crystal chemistry of the zinc-triad binary 1,1-dithiolates, that is, compounds of xanthate [ − S 2 COR], dithiophosphate [ − S 2 P(OR) 2 ], and dithiocarbamate [ − S 2 CNR 2 ] ligands, is reviewed. Owing to a wide range of coordination modes that can be adopted by 1,1-dithiolate anions, such as monodentate, chelating, µ 2 -bridging, µ 3 -bridging, etc., there exists a rich diversity in supramolecular assemblies for these compounds, including examples of zero-, one-, and two-dimensional architectures. While there are similarities in structural motifs across the series of 1,1-dithiolate ligands, specific architectures are sometimes found, depending on the metal centre and/or on the 1,1-dithiolate ligand. Further, an influence of steric bulk upon supramolecular aggregation is apparent. Thus, bulky R groups generally preclude the close approach of molecules in order to reduce steric hindrance and therefore, lead to lower dimensional aggregation patterns. The ligating ability of the 1,1-dithiolate ligands also proves crucial in determining the extent of supramolecular aggregation, in particular for dithiocarbamate species where the relatively greater chelating ability of this ligand reduces the Lewis acidity of the zinc-triad element, which thereby reduces its ability to significantly expand its coordination number. Often, the functionalisation of the organic substituents in the 1,1-dithiolate ligands, for example, by incorporating pyridyl groups, can lead to different supramolecular association patterns. Herein, the diverse assemblies of supramolecular architectures are classified and compared. In all, 27 structurally distinct motifs have been identified.

show abstract

Bis(N-benzyl-N-furfuryldithiocarbamato-S,S′)mercury(II) as a precursor for the preparation of mercury sulfide nanoparticles

Cited by 23 publications

References 26 publications

Co(III) N,N′‐diarylformamidine dithiocarbamate complexes: Synthesis, characterization, crystal structures and biological studies

Co(III) N,N′‐diarylformamidine dithiocarbamate complexes: Synthesis, characterization, crystal structures and biological studies

Practical approach to 2-thioxo-2,3-dihydroquinazolin-4(1 H )-one via dithiocarbamate–anthranilic acid reaction

Exploring the Topological Landscape Exhibited by Binary Zinc-triad 1,1-dithiolates

Contact Info

Product

Resources

About