Study of the influence of the choice of transition metal parameters in the CNDO method on the calculated physicochemical properties of their hydrate complexes

1978 ◽  
Vol 19 (2) ◽  
pp. 186-190 ◽  
Author(s):  
N. V. Shokhirev ◽  
P. V. Schastnev
Keyword(s):  
Transition Metal ◽  
Physicochemical Properties ◽  
Cndo Method

scholarly journals Magnetic ionic liquids based on transition metal complexes with N-alkylimidazole ligands

2019 ◽  
Vol 43 (1) ◽  
pp. 20-23 ◽  
Author(s):  
Deepak Chand ◽  
Muhammad Qamar Farooq ◽  
Arjun K. Pathak ◽  
Jingzhe Li ◽  
Emily A. Smith ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Transition Metal ◽  
Physicochemical Properties ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Magnetic Ionic Liquids

Nickel(ii), cobalt(ii) and manganese(ii) N-alkylimidazole bis[(trifluoromethyl)sulfonyl]imide magnetic ionic liquids were synthesized from their chloride intermediates and their physicochemical properties studied.

Photocatalytic Activities of Transition Metal-Doped TiO2 Nano-Powders by Sonochemical Method and their Physicochemical Properties

2011 ◽  
Vol 695 ◽  
pp. 129-132 ◽  
Author(s):  
Ah Young Choi ◽  
Yamaguchi Tokutaro ◽  
Sung Hun Cho ◽  
Chul Hee Han
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Physicochemical Properties ◽  
Photocatalytic Oxidation ◽  
Cell Model ◽  
Sonochemical Method ◽  
Photocatalytic Activities ◽  
Metal Doped ◽  
Binding Energy Calculations

With respect to metal doping into TiO2, the doping limits for V, Cr, Zr, Nb, Mo, and W are predicted to be higher than other transition metals according to the binding energy calculations in a unit cell model of anatase TiO2, which suggests that Cr and W can be doped into anatase structure more easily than Ag or Pt, for example. Our investigation has twofold research objectives. One is to prepare metal-doped TiO2 nano-powders from these transition metals, and the other is to test photocatalytic activity of each resulting powder. For the former, sonochemical process has been used to produce Cr-doped, W-doped, Ag-doped, and Pt-doped TiO2 nanoparticles. For the latter, we have performed photocatalytic oxidation of methylene blue. The combined results of the morphology and photocatalytic activites have enabled characterization of the physicochemical properties of these transition metal-doped nanoparticles.

scholarly journals Straightforward Strategies for the Preparation of NH-Sulfox­imines: A Serendipitous Story

Synlett ◽  
2017 ◽  
Vol 28 (19) ◽  
pp. 2525-2538 ◽  
Author(s):  
James Bull ◽  
Renzo Luisi ◽  
Leonardo Degennaro
Keyword(s):  
Transition Metal ◽  
Physicochemical Properties ◽  
Direct Synthesis ◽  
Transition Metal Catalysts ◽  
Hypervalent Iodine ◽  
Reaction Conditions ◽  
One Pot ◽  
Metal Free ◽  
Recent Developments ◽  
New Procedures

Sulfoximines are emerging as valuable new isosteres for use in medicinal chemistry, with the potential to modulate physicochemical properties. Recent developments in synthetic strategies have made the unprotected ‘free’ NH-sulfoximine group more readily available, facilitating further study. This account reviews approaches to NH-sulfoximines, with a focus on our contribution to the field. Starting from the development of catalytic strategies involving transition metals, more sustainable metal-free processes have been discovered. In particular, the use of hypervalent iodine reagents to mediate NH-transfer to sulfoxides is described, along with an assessment of the substrate scope. Furthermore, a one-pot strategy to convert sulfides directly into NH-sulfoximines is discussed, with N- and O-transfer occurring under the reaction conditions. Mechanistic evidence for the new procedures is included as well as relevant synthetic applications that further exemplify the potential of these approaches.1 Introduction2 Strategies to Form NH-Sulfoximines Involving Transition-Metal Catalysts3 Metal-Free Strategies to Prepare NH-Sulfoximines4 Mechanistic Evidence for the Direct Synthesis of NH-Sulfoximines from Sulfoxides and Sulfides5 Further Applications6 Conclusion

scholarly journals Tailoring the physicochemical properties of solution-processed transition metal dichalcogenides via molecular approaches

2019 ◽  
Vol 55 (61) ◽  
pp. 8900-8914 ◽  
Author(s):  
Stefano Ippolito ◽  
Artur Ciesielski ◽  
Paolo Samorì
Keyword(s):  
Transition Metal ◽  
Physicochemical Properties ◽  
Transition Metal Dichalcogenides ◽  
Solution Processed ◽  
Feature Article ◽  
Molecular Approaches ◽  
Tremendous Progress ◽  
Metal Dichalcogenides

In this Feature Article we highlight the tremendous progress in solution-processed transition metal dichalcogenides and the molecular approaches employed to finely tune their physicochemical properties.

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