A stable tetrazagallole and its radical anion dimer

2021 ◽  
Author(s):  
Qian Yu ◽  
Li Zhang ◽  
Yuhao He ◽  
Jinjing Pan ◽  
Hao Li ◽  
...  
Keyword(s):  
Radical Anion ◽  
Tert Butyl ◽  
Butyl Benzene

The reaction of the carbazole ligand supported Ga(I) compound LGa(THF) (3) and 1-azido-4-(tert-butyl)benzene (ArN3) afforded the first stable tetrazagallole LGaN4Ar2 (4) bearing a three-coordinate Ga atom. Reduction of 4 with...

scholarly journals Antioxidant activities of two novel synthetic methylbenzenediol derivatives 

2014 ◽  
Vol 32 (No. 4) ◽  
pp. 348-353 ◽  
Author(s):  
Y. Huang ◽  
Z. Jiang ◽  
X. Liao ◽  
J. Hou ◽  
X. Weng
Keyword(s):  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Hydroxyl Groups ◽  
Test Experiment ◽  
Tert Butyl ◽  
Tertiary Butanol ◽  
Rancimat Test ◽  
Phenolic Hydroxyl Groups ◽  
Butyl Benzene ◽  
Craft Reaction

2-(tert-Butyl)-5-methylbenzene-1,4-diol and 3-(tert-butyl)-5-methylbenzene-1,2-diol were synthesised by Friedel-Craft reaction of 2-methylbenzene-1,4-diol and 4-methylbenzene-1,2-diol, respectively, with tertiary butanol providing reasonable yields. The antioxidant activities of these two products, mother compounds and 2-(tert-butyl)benzene-1,4-diol were investigated and compared by means of 2,2-diphenyl-1-picrylhydrazyl radical and Rancim at test; 3-(tert-butyl)-5-methylbenzene-1,2-diol is the most potent antioxidant tested by using Rancimat test experiment. The 2,2-diphenyl-1-picrylhydrazyl radical scavenging abilities of 2-methylbenzene-1,4-diol, 4-methylbenzene-1,2-diol and 2-(tert-butyl)benzene-1,4-diol are almost equal and more than twice as strong as 2-(tert-butyl)-5-methylbenzene-1,4-diol and 3-(tert-butyl)-5-methylbenzene-1,2-diol. The antioxidant activities of the five compounds evaluated by Rancimat test mainly depend on their steric synergist effects between the two phenolic hydroxyl groups in their molecules. The antioxidant activities of the five compounds mainly depend on how many 2,2-diphenyl-1-picrylhydrazyl radicals can be scavenged by one mole of them in 2,2-diphenyl-1-picrylhydrazyl test. One mole of 2-methylbenzene-1,4-diol, 4-methylbenzene-1,2-diol and 2-(tert-butyl)benzene-1,4-diol can scavenge four moles of 2,2-diphenyl-1-picrylhydrazyl radicals, but one mole of 2-(tert-butyl)-5-methylbenzene-1,4-diol or 3-(tert-butyl)-5-methylbenzene-1,2-diol can only scavenge two mole 2,2-diphenyl-1-picrylhydrazyl radicals because 2,2-diphenyl-1-picrylhydrazyl radicals are very bulky.

Structure and Dynamics of Bis(triphenylphosphine)-3,6-di-tert-butyl-o-semiquinone Radical Anion Complexes of Ag+and Cu+

2003 ◽  
Vol 107 (33) ◽  
pp. 6345-6350 ◽  
Author(s):  
Rakhim R. Rakhimov ◽  
Tamika N. Hawkins ◽  
Jimmy S. Hwang ◽  
Alexander I. Prokof'ev ◽  
Aleksey I. Aleksandrov
Keyword(s):  
Radical Anion ◽  
Semiquinone Radical ◽  
Tert Butyl ◽  
Structure And Dynamics ◽  
Anion Complexes ◽  
Semiquinone Radical Anion

scholarly journals Reprint of: High spin ground state copper(II) and nickel(II) complexes possessing the 3,5-di-tert-butyl-1,2-semiquinonate radical anion

Polyhedron ◽  
2017 ◽  
Vol 136 ◽  
pp. 176-185
Author(s):  
Royce A. Davidson ◽  
Jingjun Hao ◽  
Arnold L. Rheingold ◽  
Joel S. Miller
Keyword(s):  
High Spin ◽  
Ground State ◽  
Radical Anion ◽  
Tert Butyl ◽  
Spin Ground State

Siliciumverbindungen mit starken intramolekularen sterischen Wechselwirkungen, XX [1] 1,1-Di-tert-butyl-2,2-dimesityldisilane: Synthese, Molekülstruktur, Radikale / Silicon Compounds with Strong Intramolecular Steric Interactions, XX [1] 1,1-Di-tert-butyl-2,2-dimesityldisilanes: Synthesis, Molecular Structure, Radicals

1985 ◽  
Vol 40 (5) ◽  
pp. 601-606 ◽  
Author(s):  
Manfred Weidenbruch ◽  
Klaus Kramer
Keyword(s):  
Molecular Structure ◽  
Radical Anion ◽  
Alkali Metals ◽  
Force Field Calculations ◽  
Silicon Compounds ◽  
X Ray ◽  
Tert Butyl ◽  
Anti Conformation ◽  
Empirical Force Field ◽  
Empirical Force Field Calculations

The sterically congested disilanes tBu2XSiSiXMes2 [X = H (1), X = Cl (2)] have been prepared. An X-ray structure analysis of 1 reveals a preference for the anti-conformation in the solid state. Similar results have been obtained by empirical force field calculations and DNMR spectroscopy. Reaction of 2 with an electron rich olefin leads to a chlorine bridged disilanyl radical whereas treatment with alkali metals yields the corresponding disilenyl radical anion, tBu2Si=SiMes2˙̄.

Sign in / Sign up

Export Citation Format

Share Document