Five complexes with the generic formula [ReBr(CO)3(κ2-S,S'-S2C·NHC)] were obtained by reacting [ReBr(CO)5] with a set of representative imidazol(in)ium-2-dithiocarboxylate zwitterions. These ligands are the adducts of N-heterocyclic carbenes (NHCs) and carbon disulfide. The monometallic Re(i) compounds were further coupled with Na[Re(CO)5] to afford bimetallic Re(0) species. Depending on the ex...

Two hundred and fifteen green beans samples from an agricultural region of the Souss (Agadir, Morrocco) were analyzed for endosulfan, dithiocarbamate, bifenthrin, chlorothalonil, iprodion, procymidon and deltamethrin. Of 189 samples that contained pesticide residues, dithiocarbamates (mancozeb and mefenoxam) were detected in 43 (20 %) in the concentration range of 0.045 to 2.651 mg Kg-1. Four o...

A novel multicomponent synthesis of ketene dithioacetal rhodanines has been reported by reactions of primary amine, carbon disulfide, ethyl chloroacetate, and alkyl halide in DMF. The catalytic effects of different bases have been investigated and potassium carbonate can efficiently catalyze the reaction in moderate to good yields at room temperature. 2013 Elsevier Ltd. All rights reserved. Mul...

Concerted research is being carried out to synthèses various types of metal acetylides. Acetylides give excellent reaction versatility towards metal counterpart. Flexibility in the molecular conformation also increases. In this project two metal acetylides of iron and tungsten have been prepared. [LM(CO)nC≡CR] [{L= 5 -C5H5, M = W, R = ( 5 -C5H4)Fe( 5 C5H5), n = 3},{L= 5 -C5Me5, M = Fe, R = Ph, ...

Catalytic aqueous polymerization of butadiene by the cobalt catalyst system [Co(C8H13)(C4H6)]/CS2 affords colloidally stable latices of highly crystalline syndiotactic 1,2-polybutadiene (Tm ) 190 °C, ∆Hc ) 60 J/g, Mw ∼ 105 g/mol, 97% 1,2, 3% 1,4-cis). Catalyst modification with reagents containing electrophilic carbon atoms (e.g., aromatic formamides) strongly decreases polymer crystallinity (T...