Akella Sivaramakrishna | VIT University (original) (raw)
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Papers by Akella Sivaramakrishna
BENTHAM SCIENCE PUBLISHERS eBooks, May 1, 2023
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Zenodo (CERN European Organization for Nuclear Research), May 1, 2015
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Pharmaceutical regulatory affairs, Jul 9, 2013
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Journal of Catalysis, Oct 1, 2023
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ChemInform, Jun 16, 2011
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Topics in Current Chemistry, Apr 8, 2021
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European Polymer Journal, Nov 1, 2014
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Organic and Biomolecular Chemistry, 2023
Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations... more Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations in organic synthesis. This review highlights the most recent developments in the cobalt-catalyzed functionalization of unactivated C(sp3)–H bonds.
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Topics in Current Chemistry, Jun 23, 2022
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European Polymer Journal
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An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
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An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
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Analytical chemistry, Jan 6, 2017
The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potent... more The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potential uranium scavenger. This metal-organic framework-based adsorbent shows very high selectivity toward uranium, as well as thorium, in competition with various rare earth metals. Furthermore, it showed rapid adsorption kinetics, in both batch conditions and a dynamic (column) setup. The adsorbent is fully regenerable, using oxalate solution. Fast elution kinetics in the column setup were observed during the regeneration. In addition, reusability studies were performed under dynamic conditions. Five consecutive adsorption/desorption cycles were carried out, showing a consistent 100% recovery, at pH 4, using 0.1 M oxalate solution as an effective stripping agent. Additionally, the successive use over various adsorption/desorption cycles with constant performance proves the high stability of this adsorbent in an acidic, aqueous environment.
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Applied Optics, 2017
Temperature-induced crystallization events in an aqueous calcium chloride solution in the concent... more Temperature-induced crystallization events in an aqueous calcium chloride solution in the concentration range of 15-40 mass% are monitored using an optical fiber Fresnel reflection sensor in the temperature range of 30°C to -200°C. The deviation of the phase boundary from equilibrium and the formation of an eutectic mixture followed by its densification during rapid cooling are inferred from the distinct signatures of the optical fiber sensor via the changes in refractive index. During the natural heating at laboratory ambient conditions, the optical signals impart the completion of dissolution of ice and CaCl<sub>2</sub>·6H<sub>2</sub>O. The corresponding temperatures have been used in Linke's equations to obtain the salinities, which are in good agreement with the intended solution concentrations. The sensor signal imparts simultaneous melting of the constituents of the eutectic mixture of a 29.7 mass% solution during the natural heating phase. The persistence of the metastable liquid phase at -200°C for tens of minutes followed by solidification is observed at all the concentrations studied. Finally, the feasibility of monitoring phase transitions in a NaCl-CaCl<sub>2</sub>-H<sub>2</sub>O system has been demonstrated.
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Sensors and Actuators B: Chemical, 2015
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American Journal of Applied Sciences, 2013
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Zenodo (CERN European Organization for Nuclear Research), May 1, 2015
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Zenodo (CERN European Organization for Nuclear Research), May 1, 2015
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BENTHAM SCIENCE PUBLISHERS eBooks, May 1, 2023
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Zenodo (CERN European Organization for Nuclear Research), May 1, 2015
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Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Pharmaceutical regulatory affairs, Jul 9, 2013
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Journal of Catalysis, Oct 1, 2023
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ChemInform, Jun 16, 2011
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Topics in Current Chemistry, Apr 8, 2021
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European Polymer Journal, Nov 1, 2014
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Organic and Biomolecular Chemistry, 2023
Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations... more Functionalization of unactivated C(sp3)–H bonds represents one of the interesting transformations in organic synthesis. This review highlights the most recent developments in the cobalt-catalyzed functionalization of unactivated C(sp3)–H bonds.
Bookmarks Related papers MentionsView impact
Topics in Current Chemistry, Jun 23, 2022
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European Polymer Journal
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An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
Bookmarks Related papers MentionsView impact
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
Bookmarks Related papers MentionsView impact
Analytical chemistry, Jan 6, 2017
The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potent... more The carbamoylmethylphosphine oxide (CMPO) functionalized MIL-101(Cr) was investigated as a potential uranium scavenger. This metal-organic framework-based adsorbent shows very high selectivity toward uranium, as well as thorium, in competition with various rare earth metals. Furthermore, it showed rapid adsorption kinetics, in both batch conditions and a dynamic (column) setup. The adsorbent is fully regenerable, using oxalate solution. Fast elution kinetics in the column setup were observed during the regeneration. In addition, reusability studies were performed under dynamic conditions. Five consecutive adsorption/desorption cycles were carried out, showing a consistent 100% recovery, at pH 4, using 0.1 M oxalate solution as an effective stripping agent. Additionally, the successive use over various adsorption/desorption cycles with constant performance proves the high stability of this adsorbent in an acidic, aqueous environment.
Bookmarks Related papers MentionsView impact
Applied Optics, 2017
Temperature-induced crystallization events in an aqueous calcium chloride solution in the concent... more Temperature-induced crystallization events in an aqueous calcium chloride solution in the concentration range of 15-40 mass% are monitored using an optical fiber Fresnel reflection sensor in the temperature range of 30°C to -200°C. The deviation of the phase boundary from equilibrium and the formation of an eutectic mixture followed by its densification during rapid cooling are inferred from the distinct signatures of the optical fiber sensor via the changes in refractive index. During the natural heating at laboratory ambient conditions, the optical signals impart the completion of dissolution of ice and CaCl<sub>2</sub>·6H<sub>2</sub>O. The corresponding temperatures have been used in Linke's equations to obtain the salinities, which are in good agreement with the intended solution concentrations. The sensor signal imparts simultaneous melting of the constituents of the eutectic mixture of a 29.7 mass% solution during the natural heating phase. The persistence of the metastable liquid phase at -200°C for tens of minutes followed by solidification is observed at all the concentrations studied. Finally, the feasibility of monitoring phase transitions in a NaCl-CaCl<sub>2</sub>-H<sub>2</sub>O system has been demonstrated.
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Sensors and Actuators B: Chemical, 2015
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American Journal of Applied Sciences, 2013
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Zenodo (CERN European Organization for Nuclear Research), May 1, 2015
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Zenodo (CERN European Organization for Nuclear Research), May 1, 2015
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N - C yclo hexyli den eimino- O -(trime t h yl s ily l) acylimid ates react smoothly with XSiCl3 ... more N - C yclo hexyli den eimino- O -(trime t h yl s ily l) acylimid ates react smoothly with XSiCl3 (X = M e , Ph, v i nyl
and C l) i n a transsi lyla tion re actio n pr od ucing ionic pentacoord inate b ischelates and neutral hexaco ordi -
nat e d co mplexes de pe n ding o n the e lectronic and s teric b ehavior of the lig ands . These hyp ercoord inated
si licon co mplexes are cha racte rized by UV–V is , FT- IR and N MR s pectroscop i c techni ques. A neutral hexa-
coordi nate sil icon comple x with dich lor o ligands was char acter iz ed by s ingle cry stal X- ray analy sis. The
UV–Vi s ab sor pti on da ta sh owed a sig nificant bathochr omic s hift of k max in hyp e r c o o rd inat e d s i li c o n c o m -
plexes on com p ar is o n with th e ir co rres ponding hydr azide lig ands . The 29Si N M R che m i cal shifts s tro ngl y
de pend on n atur e of X gro up directly attached to the central s ilicon atom towar d io nizati o n.
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