Ferrocene functionalized graphene: preparation, characterization and efficient catalyst for thermal decomposition of TKX-50

2021 ◽  
Author(s):  
Ming Zhang ◽  
Fengqi Zhao ◽  
Hui Li ◽  
Shuai Dong ◽  
Yanjing Yang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Molecular Structures ◽  
Functionalized Graphene ◽  
Efficient Catalyst ◽  
Two Dimension

Novel ferrocene functionalized graphene with different molecular structures were designed, fabricated and characterized using SEM, EDS, FTIR, XPS and RAMAN methods. SEM results show the two-dimension structure of the prepared...

scholarly journals Silylated gallium and indium chalcogenide ring systems as potential precursors to ME (E=O, S) materials

2013 ◽  
Vol 11 (7) ◽  
pp. 1225-1238
Author(s):  
Iliana Medina-Ramírez ◽  
Cynthia Floyd ◽  
Joel Mague ◽  
Mark Fink
Keyword(s):  
Thermal Decomposition ◽  
Room Temperature ◽  
Membered Ring ◽  
Molecular Structures ◽  
Nmr Studies ◽  
X Ray ◽  
X Ray Crystallography ◽  
High Yields ◽  
Vt Nmr ◽  
State 1

AbstractThe reaction of R3M (M=Ga, In) with HESiR′3 (E=O, S; R′3=Ph3, iPr3, Et3, tBuMe2) leads to the formation of (Me2GaOSiPh3)2(1); (Me2GaOSitBuMe2)2(2); (Me2GaOSiEt3)2(3); (Me2InOSiPh3)2(4); (Me2InOSitBuMe2)2(5); (Me2InOSiEt3)2(6); (Me2GaSSiPh3)2(7); (Et2GaSSiPh3)2(8); (Me2GaSSiiPr3)2(9); (Et2GaSSiiPr3)2(10); (Me2InSSiPh3)3(11); (Me2InSSiiPr3)n(12), in high yields at room temperature. The compounds have been characterized by multinuclear NMR and in most cases by X-ray crystallography. The molecular structures of (1), (4), (7) and (8) have been determined. Compounds (3), (6) and (10) are liquids at room temperature. In the solid state, (1), (4), (7) and (9) are dimers with central core of the dimer being composed of a M2E2 four-membered ring. VT-NMR studies of (7) show facile redistribution between four- and six-membered rings in solution. The thermal decomposition of (1)–(12) was examined by TGA and range from 200 to 350°C. Bulk pyrolysis of (1) and (2) led to the formation of Ga2O3; (4) and (5) In metal; (7)–(10) GaS and (11)–(12) InS powders, respectively.

Grafting of a rhenium-oxo complex on Schiff base functionalized graphene oxide: an efficient catalyst for the oxidation of amines

2014 ◽  
Vol 43 (21) ◽  
pp. 8054 ◽  
Author(s):  
Praveen K. Khatri ◽  
Shivani Choudhary ◽  
Raghuvir Singh ◽  
Suman L. Jain ◽  
Om P. Khatri
Keyword(s):  
Schiff Base ◽  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Efficient Catalyst ◽  
Functionalized Graphene Oxide

A functionalized graphene oxide and nano-zeolitic imidazolate framework composite as a highly active and reusable catalyst for [3 + 3] formal cycloaddition reactions

2015 ◽  
Vol 3 (28) ◽  
pp. 14779-14785 ◽  
Author(s):  
Yongyi Wei ◽  
Zhongkai Hao ◽  
Fang Zhang ◽  
Hexing Li
Keyword(s):  
Graphene Oxide ◽  
Reusable Catalyst ◽  
Cycloaddition Reactions ◽  
Functionalized Graphene ◽  
Zeolitic Imidazolate Framework ◽  
Efficient Catalyst ◽  
Functionalized Graphene Oxide ◽  
Highly Active

A SO3H-functionalized graphene oxide and nano-ZIF-8 composite was used as an efficient catalyst for [3 + 3] formal cycloaddition reactions with pyranyl heterocycles.

Preparation, crystal and molecular structures of Ph2CNSNSO and a comparison of the —SNSO and —SNSS chromophores

1985 ◽  
Vol 63 (5) ◽  
pp. 1063-1067 ◽  
Author(s):  
Tristram Chivers ◽  
Richard T. Oakley ◽  
Roger Pieters ◽  
John F. Richardson
Keyword(s):  
Thermal Decomposition ◽  
Molecular Structures ◽  
Structural Determination ◽  
Model Compounds ◽  
Excitation Energies ◽  
Space Group ◽  
X Ray ◽  
Crystal And Molecular Structures ◽  
Mndo Calculations

The sulphenyl chloride, Ph2CNSCl, prepared insitu from Ph2CNSiMe3 and sulphur dichloride, has been employed in the synthesis of Ph2CNSNSO and Ph2CNSNSNSNCPh2 by reaction with Me3SiNSO and Me3SiNSNSiMe3, respectively. An X-ray structural determination of Ph2CNSNSO shows it to consist of a planar cis-trans chain. The crystals are triclinic and belong to the space group[Formula: see text], a = 9.9078(8), b = 10.0967(9), c = 15.1682(14) Å, α = 78.646(7), β = 71.065(7), γ = 63.449(7)°, V = 1281.5(5) Å3, Z = 4. The final R and Rw values were 0.033 and 0.027, respectively. The π* → π* excitation energies for the RSNSO and RSNSS chromophores are compared for different R groups and discussed in the light of MNDO calculations on the model compounds HSNSX (X = S, O). The thermal decomposition of both Ph2CNSNSO and Ph2CNSNSNSNCPh2 produced S4N4 and Ph2CO or (Ph2CN)2S, respectively.

A nitrogen and sulphur functionalized graphene oxide–palladium nanoparticle hybrid catalyst for an efficient Heck coupling

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74961-74967 ◽  
Author(s):  
Chanchal Premi ◽  
Nidhi Jain
Keyword(s):  
Graphene Oxide ◽  
Functionalized Graphene ◽  
Heck Coupling ◽  
Hybrid Catalyst ◽  
Palladium Nanoparticle ◽  
Efficient Catalyst ◽  
Functionalized Graphene Oxide

A nanohybrid of Pd on GO functionalized with N and S has been fabricated, and demonstrated as an efficient catalyst for Heck coupling with a substantially low catalytic loading (0.02 mol%).

scholarly journals Transition metal complexes with pyrazole based ligands, part 27: Structural and thermal characterization of cobalt(II) halide and pseudohalide complexes with 4-acetyl-3-amino-5-methylpyrazole

2007 ◽  
Vol 72 (12) ◽  
pp. 1281-1293 ◽  
Author(s):  
Vukadin Leovac ◽  
Zoran Tomic ◽  
Katalin Mészáros-Szécsényi ◽  
Ljiljana Jovanovic ◽  
Milan Joksovic
Keyword(s):  
Thermal Decomposition ◽  
Solid State ◽  
Transition Metal Complexes ◽  
Thermal Characterization ◽  
Molecular Structures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal And Molecular Structures ◽  
Vis Spectroscopy

The crystal and molecular structures of four tetrahedral structurally similar [Co(aamp)2X2] complexes (aamp = 4-acetyl-3-amino-5-methylpyrazole, X = Cl, Br, I and NCS) were determined by X-ray diffraction analysis and are discussed in detail. It was found that the different capacity of the ligand X (NCS vs. Cl, Br, I) for the formation of non-bonding contacts influence the mode of molecular association in the solid state. The complexes were characterized by UV-Vis spectroscopy. The first step of the thermal decomposition of the compounds was checked and is discussed in the view of the IR spectrum of the intermediate isolated from [Co(aamp)2Br2] by the quasi-isothermal technique.

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