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Heterocyclic Bismuth(III) Dithiocarbamato Complexes as Single‐Source Precursors for the Synthesis of Anisotropic Bi 2 S 3 Nanoparticles
Author(s) -
Kun Walter N.,
Mlowe Sixberth,
Nyamen Linda D.,
Ndifon Peter T.,
Malik Mohammad A.,
Munro Orde Q.,
Revaprasadu Neerish
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602106
Subject(s) - oleylamine , orthorhombic crystal system , bismuth , lone pair , thermal decomposition , chemistry , nanorod , crystallography , single crystal , thermogravimetric analysis , inorganic chemistry , crystal structure , nanoparticle , materials science , molecule , organic chemistry , nanotechnology
New complexes catena ‐(μ 2 ‐nitrato‐ O , O′ )bis(piperidinedithiocarbamato)bismuth(III) ( 1 ) and tetrakis(μ‐nitrato)tetrakis[bis(tetrahydroquinolinedithiocarbamato)bismuth(III)] ( 2 ) were synthesised and characterised by elemental analysis, FTIR spectroscopy and thermogravimetric analysis. The single‐crystal X‐ray structures of 1 and 2 were determined. The coordination numbers of the Bi III ion are 8 for 1 and ≥6 for 2 when the experimental electron density for the nominal 6s 2 lone pair of electrons is included. Both complexes were used as single‐source precursors for the synthesis of dodecylamine‐, hexadecylamine‐, oleylamine and tri‐ n ‐octylphosphine oxide‐capped Bi 2 S 3 nanoparticles at different temperatures. UV/Vis spectra showed a blueshift in the absorbance band edge characteristic of a quantum size effect. High‐quality, crystalline, long and short Bi 2 S 3 nanorods were obtained depending on the thermolysis temperature, which was varied from 190 to 270 °C. A general trend of increasing particle breadth with increasing reaction temperature and increasing length of the carbon chain of the amine (capping agent) was observed. Powder XRD patterns revealed the orthorhombic crystal structure of Bi 2 S 3 .