17866-84-1

Basic information

• Product Name: TEREPHTHALBIS(4-FLUOROANILINE)
• Synonyms: terephthalbisfluoroaniline;BIS(4-FLUOROANILINO)TEREPHTHALALDEHYDE;N,N'-(1,4-PHENYLENEDIMETHYLIDYNE)BIS(4-FLUOROANILINE);N,N'-TEREPHTHALYLIDENE-BIS(4-FLUOROANILINE);TEREPHTHALBIS(4-FLUOROANILINE);TEREPTHALBIS(4-FLUOROANILINE);N,N'-TEREPHTHALYLIDENE-BIS(4-FLUOROANIL&;Terephthalbis(4-fluoroaniline), N,Nμ-(1,4-Phenylenedimethylidyne)bis(4-fluoroaniline)
• CAS NO: 17866-84-1
• Molecular Formula: C₂₀H₁₄F₂N₂
• Molecular Weight: 320.34
• Product Categories: Functional Materials;Liquid Crystals & Related Compounds;Schiff Bases (Liquid Crystals)
• Mol File: 17866-84-1.mol
• Article Data: 1

Chemical Properties

• Melting Point: 151-155 °C(lit.)
• Boiling Point: 464.8°Cat760mmHg
• Flash Point: 234.9°C
• Appearance: /
• Density: 1.12g/cm³
• CAS DataBase Reference: TEREPHTHALBIS(4-FLUOROANILINE)(CAS DataBase Reference)
• NIST Chemistry Reference: TEREPHTHALBIS(4-FLUOROANILINE)(17866-84-1)
• EPA Substance Registry System: TEREPHTHALBIS(4-FLUOROANILINE)(17866-84-1)

Safety Data

• Hazard Codes: Xn,Xi
• Statements: 22-36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• Hazardous Substances Data: 17866-84-1(Hazardous Substances Data)

Usage

General Description

Terephthalbis(4-fluoroaniline) is a chemical compound that is primarily used in the industrial sector. Its molecular formula is (C6H4CFNH2)2 and it is known for its potential to influence the production of polymers. The fluorine atom in terephthalbis(4-fluoroaniline) enhances its overall stability as well as its reactivity. As a derivative of aniline, this chemical exhibits properties of both amines and aromatic compounds. It typically comes in a white or off-white crystalline powder form. Despite its usefulness in various industries, exposure to terephthalbis(4-fluoroaniline) must be limited due to potential harm to humans and the environment.

Upstream product

• 623-27-8 terephthalaldehyde, 
• 371-40-4 4-fluoroaniline 

Relevant articles and documents

Molecular symmetry and fluorine-containing supramolecular synthons as structure-differentiating agents in some bridge-flipped isomeric bis-benzylideneanilines

The crystal structures of three pairs of bridge-flipped isomers are compared here in the context of whether their similarity in molecular space-filling requirements in combination with the tendency of centrosymmetric molecules to occupy crystallographic inversion centers might lead to their isomorphism. The possibility that similar fluorine-based supramolecular synthons occurring in the crystal structures of both members of a pair might promote their isomorphism is also considered. The compounds are the bis- benzylideneanilines formed by reaction of 2-fluoroaniline, 3-fluoroaniline, and 4-fluoroaniline respectively with terephthaldehyde (1-3) and by reaction of 2-fluorobenzaldehyde, 3-fluorobenzaldehyde, and 4-fluorobenzaldehyde respectively with phenylenediamine (4-6). The crystal structure of 2 is disordered, with the fluorine atom occupying two sites (95 : 5 occupation) related by rotation about the bond between the bridge nitrogen atom and the 3-fluorophenyl group. The crystal structure of 6 (HEWHAU) has been reported by previous workers. The structures of the 1:4, 2:5, and 3:6 pairs are compared to each other and to those of fluorinated simple (one-bridge) benzylideneanilines and fluorinated bis-benzylideneanilines recently described in the literature. No isomorphism is found among the bridge-flipped isomeric pairs, and none is found between positional isomers within the 1-3 or 4-6 series. The supramolecular synthon defined by a 2-F?bridge H contact is found in several of the benzylideneaniline crystal structures, but it does not compel isomorphism, nor is it specific to one type (terephthaldehyde-based or phenylenediamine-based) of isomer. Conformational variability and supramolecular synthon variety apparently serve as structure differentiators, not as isomorphism facilitators, among these bis-benzylideneanilines. The Royal Society of Chemistry 2014.