期刊
ULTRASONICS SONOCHEMISTRY
卷 41, 期 -, 页码 172-180出版社
ELSEVIER
DOI: 10.1016/j.ultsonch.2017.09.038
关键词
Coordination complexes; Indirect band gap; Nano-structures of cobalt(III) complexes; Semiconductors; Sonochemical synthesis; X-ray powder diffraction
资金
- UGC, New Delhi, India [41-285/2012 (SR)]
- University with Potential for Excellence (UPE) [14-2/2012(NS/PE)]
- FIST-DST
- UGC
New nano-sized cobalt(III) coordination complexes, [Co(NH3)(5)N-3]CrO4 (1N) and [Co(NH3)(5)N-3]Cr2O7 (2N) were synthesized using an innovative sonochemical methodology based on reaction between [Co(NH3)(5)N-3]Cl-2 and potassium salt of CrO42- or Cr2O72- in aqueous medium. These complexes were also compared with their respective bulks which were synthesized under identical conditions in the absence of sonicaion. All the complexes were characterized by elemental analysis and spectroscopic techniques (UV-visible and IR). Morphology and particle size of nano-sized complexes was determined by SEM and Zeta-sizer respectively. TGA was used for comparative thermal stability and XRD to identify the phase difference between nano structures and bulk complexes. Furthermore, the electrical property was investigated and all complexes were found to be electrical semiconducting materials and 2N shows better result than others. The single crystals X-ray structure study of new [Co(NH3)(5)N-3]Cr2O7 revealed the presence of discrete ions, No(NH3)(5)N-3](2+) and Cr2O72-, crystallizes in monoclinic, space group P-c, with R = 0.0636 in the solid state.
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