7396-38-5

Basic information

• Product Name: PHENANTHRENE,2,4,5,7-TETRAMETHYL
• Synonyms: PHENANTHRENE,2,4,5,7-TETRAMETHYL;2,4,5,7-Tetramethylphenanthrene
• CAS NO: 7396-38-5
• Molecular Formula: C18H18
• Molecular Weight: 234.34
• Mol File: 7396-38-5.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 401.3°C at 760 mmHg
• Flash Point: 189.5°C
• Appearance: /
• Density: 1.051g/cm³
• Vapor Pressure: 2.76E-06mmHg at 25°C
• Refractive Index: 1.649
• CAS DataBase Reference: PHENANTHRENE,2,4,5,7-TETRAMETHYL(CAS DataBase Reference)
• NIST Chemistry Reference: PHENANTHRENE,2,4,5,7-TETRAMETHYL(7396-38-5)
• EPA Substance Registry System: PHENANTHRENE,2,4,5,7-TETRAMETHYL(7396-38-5)

Safety Data

• Hazardous Substances Data: 7396-38-5(Hazardous Substances Data)

Usage

InChI:InChI=1/C18H18/c1-11-7-13(3)17-15(9-11)5-6-16-10-12(2)8-14(4)18(16)17/h5-10H,1-4H3

Upstream product

• 13863-27-9 (E)-1,2-bis(3,5-dimethylphenyl)ethene 
• 68983-27-7 1,2-bis(3,5-dimethylphenyl)ethylene 
• 7343-16-0 9,10-Dihydro-2,4,5,7-tetramethyl-phenanthren 
• 71871-08-4 2.2'-Bis(chlormethyl)-4.4'.6.6'-tetramethylbiphenyl 
• 7411-15-6 2,2'-Bis-hydroxymethyl-4,4',6,6'-tetramethyl-biphenyl 
• 14438-32-5 3,5-dimethylanthranilic acid 
• 39603-24-2 5,7-dimethylisatin 
• 7343-14-8 4,4',6,6'-tetramethylbiphenyl-2,2'-dicarboxylic acid 
• 7359-08-2 2,2'-Bis-brommethyl-4,4',6,6'-tetramethyl-biphenyl 
• 7343-15-9 4,4',6,6'-Tetramethyl-diphensaeurediaethylester 

Downstream Products

• 17825-38-6 (+/-)-2,4,5,7-Tetramethyl-9,10-phenanthrenequinone 

Relevant articles and documents

Spatial Structure of 4n? Helicene Dianions

Helicene dianions, e.g. phenanthrene derivatives, once believed to be non-helical, maintain their chirality as 4n? dianions.Phenanthrene 5, as well as substituted phenanthrene derivatives, undergo a two-electron reduction to form the respective 4n? dianion e.g. 52-/2Li+.Phenanthrene derivatives substituted at the 4- and 5-positions (bay substituents) e.g. 6-11, which are helical, afford stable dianions.These dianions are also prepared by a two-electron reduction of the (4n+2)? electron hydrocarbons and show, in their 1H NMR spectra, a quench of the paratropicity compared to 52- as well as a line shape dependence on their twist angle.The quench of paratropicity was also observed in the closely related charged helicenes derived from the benzochrysene system, i.e. anions 122- and 132-.The twist angles were calculated by MMX and MNDO calculations for the neutral systems, i.e., 5-11, and by MNDO for the dianions.MNDO calculations also included the preferred location of the counter cation.A dynamic NMR spectroscopic study proves experimentally the helicity of anion 112- thus shedding light on the behaviour of this novel class of dianions.