We present a simple, easily scalable route to monodisperse copper sulfide nanocrystals by the hot injection of a series of novel copper(I) xanthate single-source precursors [(PPh)Cu(SCOR)] (R = isobutyl, 2-methoxyethyl, 2-ethoxyethyl, 1-methoxy-2-propyl, 3-methoxy-1-butyl, and 3-methoxy-3-methyl-1-butyl), whose crystal structures are also reported. We show that the width of the obtained rods is dependent on the length of the xanthate chain, which we rationalize through a computational study, where we show that there is a relationship between the ground-state energy of the precursor and the copper sulfide rod width.

Tin(II)O-ethylxanthate [Sn(S 2 COEt) 2 ] was prepared and used as a single-source precursor for the deposition of SnS thin films by a melt method. Polycrystalline, (111)-orientated, orthorhombic SnS films with controllable elemental stoichiometries (of between Sn 1.3 S and SnS) were reliably produced by selecting heating temperatures between 200 and 400°C. The direct optical band gaps of the SnS films ranged from 1.26 to 1.88 eV and were strongly influenced by its Sn/S ratio. The precursor [Sn(S 2 COEt) 2 ] was characterized by thermogravimetric analysis and attenuated total reflection Fourier-transform infrared spectroscopy. The as-prepared SnS films were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, powder X-ray diffractometry, Raman spectroscopy, and UV-Vis spectroscopy.

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In this paper we report the synthesis and single-crystal X-ray characterisation of six novel indium(iii) xanthate complexes. These xanthates have been used as an In-source for the synthesis of highly crystalline CuInS2 nanoparticles in conjunction with a Cu(i)-xanthate. In synthesising the nanoparticles we have also demonstrated an ability to control the phase of the material through choice of solvent.

Six new organotin(IV) derivatives [Me 3 SnL 1 ] (1), [Bu 3 SnL 1 ] (2), [Ph 3 SnL 1 ] (3), [Me 3 SnL 2 ] (4), [Bu 3 SnL 2 ] (5) and [Ph 3 SnL 2 ] (6) (where HL 1 = = 9-fluoro-6,7-dihydro-5-methyl-1-oxo-1H,5H-pyrido[3,2,1-ij]quinoline-2-carboxylic acid (flumequine) and HL 2 = 2-[2-[4-[(4-chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy] acetic acid (cetirizine)) were synthesized and characterized by elemental analysis, FT-IR spectroscopy, multinuclear 1 H-, 13 C-and 119 Sn-NMR, mass spectrometry and thermal analysis techniques. The obtained data reveal trigonal-bipyramidal geometry in case of complexes 1, 2, 4 and 5, and tetrahedral geometry for complexes 3 and 6 around the tin atom, whereas in complexes 3 and 6 the carboxylate ligand act as monodentate ligand through one of its oxygen atoms while it acts as bidentate ligand through two oxygen atoms for complexes 1, 2, 4 and 5. The antibacterial and antifungal efficacies of complexes 1-6 were assessed and the majority of the compounds showed good activities. The present research showed that the trimethyltin(IV) derivatives were particularly more effective than tributyltin(IV) and triphenyltin(IV) derivatives against all the bacterial and fungal strains. Antioxidant and DNA binding studies were also performed and promising results were obtained.