67994-95-0

Basic information

• Product Name: 1,1'-Dimethyl-4,4'-bipyridinium bishexafluorophosphate
• CAS NO: 67994-95-0
• Molecular Formula: C₁₂H₁₄N₂*2F₆P
• Molecular Weight: 0
• Mol File: 67994-95-0.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 1,1'-Dimethyl-4,4'-bipyridinium bishexafluorophosphate(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1'-Dimethyl-4,4'-bipyridinium bishexafluorophosphate(67994-95-0)
• EPA Substance Registry System: 1,1'-Dimethyl-4,4'-bipyridinium bishexafluorophosphate(67994-95-0)

Safety Data

• Hazardous Substances Data: 67994-95-0(Hazardous Substances Data)

Usage

General Description

1,1'-Dimethyl-4,4'-bipyridinium bishexafluorophosphate, also known as paraquat, is a toxic chemical compound commonly used as an herbicide. It is easily absorbed through the skin or lungs and is highly toxic, causing severe lung damage and leading to respiratory failure in high doses. 1,1'-Dimethyl-4,4'-bipyridinium bishexafluorophosphate is also known for its potential to cause multiple organ failure and has been associated with several fatal poisonings. Due to its high toxicity, paraquat is banned in many countries, and its use is heavily regulated in others. Despite its toxic nature, it is still used as an effective weed killer in some areas.

Upstream product

• 113816-15-2 C₂₈H₄₀O₁₀*C₁₂H₁₄N₂⁽²⁺⁾*2F₆P^(1-) 

Relevant articles and documents

The slipping approach to self-assembling [n]rotaxanes

A synthetic approach - namely slippage - to self-assembling [n]rotaxanes incorporating π-electron deficient bipyridinium-based dumbbell-shaped components and π-electron-rich hydroquinone- and/or dioxynaphthalene-based macrocyclic polyether components has been developed. The kinetics of rotaxane formation by the slipping procedure were investigated by absorption UV-visible and 1H-NMR spectroscopies in a range of temperatures and solvents, varying systematically the size of both the stoppers and the macrocyclic components. As expected, the rate constants for these processes are affected by the size complementarity between macrocycles and stoppers. Furthermore, the enthalpic and entropic contributions to the free energies of activation associated with the slippage and the effect of solvent polarity upon the outcome of these processes have been evaluated. In addition, the spectroscopic and electrochemical properties of some of the rotaxanes are presented and discussed with reference to the properties of their chromophoric and electroactive units.