54705-14-5

Basic information

• Product Name: tetrabromopyrrole
• Synonyms: tetrabromopyrrole;2,3,4,5-Tetrabromo-1H-pyrrole
• CAS NO: 54705-14-5
• Molecular Formula: C₄HBr₄N
• Molecular Weight: 382.67
• Mol File: 54705-14-5.mol

Chemical Properties

• Boiling Point: 389.8±37.0 °C(Predicted)
• Appearance: /
• Density: 2.888±0.06 g/cm3(Predicted)
• PKA: 11.69±0.50(Predicted)
• CAS DataBase Reference: tetrabromopyrrole(CAS DataBase Reference)
• NIST Chemistry Reference: tetrabromopyrrole(54705-14-5)
• EPA Substance Registry System: tetrabromopyrrole(54705-14-5)

Safety Data

• Hazardous Substances Data: 54705-14-5(Hazardous Substances Data)

Usage

InChI:InChI=1S/C4HBr4N/c5-1-2(6)4(8)9-3(1)7/h9H

Upstream product

• 109-97-7 pyrrole 
• 64-17-5 ethanol 
• 7726-95-6 bromine 
• 26019-65-8 2-(Pyrrol-2-ylcarbonyl)benzoic Acid 

Downstream Products

• 87-58-1 2,3,4,5-tetraiodo-1H-pyrrole 
• 1122-10-7 2,3-dibromomaleimide 

Relevant articles and documents

Reduced graphene oxide grafted by the polymer of polybromopyrroles for nanocomposites with superior performance for supercapacitors

An integrated structure has been designed by grafting the polymer of polybromopyrroles (PPBP) onto reduced graphene oxide (RGO) to produce RGO/PPBP nanocomposites with superior electrochemical performance for supercapacitors. The RGO/PPBP nanocomposites are featured with a high nitrogen content (>9 at%), enhanced degree of graphitization, improved specific surface area, abundant micropores, and a tunable hierarchical structure on the basis of sample characterization by XRD, Raman, FT-IR, XPS, SEM, high-resolution TEM, BET, and scanning probe microscopy (SPM) techniques. The grafting of PPBP onto RGO not only suppresses agglomeration and restacking of RGO but also tailors the growth of PPBP on RGO, producing a developed hierarchical structure beneficial for mass/charge transfer. The synergistic effect between RGO and PPBP ensures superior electrochemical performance of RGO/PPBP. In a three-electrode mode, the typical RGO/PPBP electrode presents a galvanostatic capacitance (Cg) of 256 F g-1 at a current density of 10 A g-1, with a capacitance retention of 99.2% after 10000 cycles in 1 mol L-1 H2SO4. More significantly, the typical RGO/PPBP&3Verbar;RGO/PPBP supercapacitor cell exhibits a high Ccell value of 68 F g-1 at 5 A g-1, with a capacitance retention of 91.9% after 10000 cycles. Also, relatively high energy density values of 13.6, 9.4, and 6.7 W h kg-1 with the corresponding power density of 0.5, 2.5, and 10 kW kg-1 are achieved, enabling the tested cell to stay at the high level for carbon-based supercapacitors with an aqueous electrolyte.

Bromination and Chlorination of Pyrrole and Some Reactive 1-Substituted Pyrroles

Monobromination of pyrrole and 1-methyl-, 1-benzyl-, and 1-phenylpyrrole with 1 mol of N-bromosuccinimide in tetrahydrofuran results in the regiospecific formation of the 2-bromopyrroles.A little disubstitution is observed.Similarly, brominations with 2, 3, or 4 mol of NBS form primarily the di-, tri-, and tetrabromopyrroles, respectively.The thermodynamically more stable 3-bromopyrroles are the major monobrominated products observed when bromine is used as the brominating agent due to isomerization of the 2-bromopyrroles with hydrogen bromide.These reaction mixtures are further complicated because of disproportionation reactions.Chlorination with N-chlorosuccinimide gave results similar to those for the bromination with NBS, but the reaction is not as selective.