Cadmium Bis(phenyldithiocarbamate) as a Nanocrystal Shell-Growth Precursor.

Authors :: Morrison CE
Wang F
Rath NP
Wieliczka BM
Loomis RA
Buhro WE
Source :: Inorganic chemistry [Inorg Chem] 2017 Nov 06; Vol. 56 (21), pp. 12920-12929. Date of Electronic Publication: 2017 Oct 06.
Publication Year :: 2017
Abstract: Cadmium bis(phenyldithiocarbamate) [Cd(PTC) <subscript>2</subscript> ] is prepared and structurally characterized. The compound crystallizes in the monoclinic space group P2 <subscript>1</subscript> /n. A one-dimensional polymeric structure is adopted in the solid state, having bridging PTC ligands and 6-coordinate pseudo-octahedral Cd atoms. The compound is soluble in DMSO, THF, and DMF and insoluble in EtOH, MeOH, CHCl <subscript>3</subscript> , CH <subscript>2</subscript> Cl <subscript>2</subscript> , and toluene. {CdSe[n-octylamine] <subscript>0.53</subscript> } quantum belts and Cd(PTC) <subscript>2</subscript> react to deposit epitaxial CdS shells on the nanocrystals. With an excess of Cd(PTC) <subscript>2</subscript> , the resulting thick shells contain spiny CdS nodules grown in the Stranski-Krastanov mode. Stoichiometric control affords smooth, monolayer CdS shells. A base-catalyzed reaction pathway is elucidated for the conversion of Cd(PTC) <subscript>2</subscript> to CdS, which includes phenylisothiocyanate and aniline as intermediates, and 1,3-diphenylthiourea as a final product.