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2,2'-Biquinoline

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2,2'-Biquinoline Basic information

Product Name:
2,2'-Biquinoline
Synonyms:
  • Cuproine 2,2'-Diquinolyl
  • 2,2'-BIQUINOLINE GR FOR ANALYSIS
  • CUPROIN R. G.
  • 2-2-BiquinolineGr
  • 2,2'-Diquinolyl, 98+%
  • 2,2’-BIQUINOLINE GR (2,2' Diquinolyl)
  • 2,3''-BIQUINOLINE GR
  • 2,2'-Biquinoline, 98+%
CAS:
119-91-5
MF:
C18H12N2
MW:
256.3
EINECS:
204-357-5
Product Categories:
  • Quinolinecarboxylic Acids, etc.
  • Quinolines
Mol File:
119-91-5.mol
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2,2'-Biquinoline Chemical Properties

Melting point:
192-195 °C(lit.)
Boiling point:
389.54°C (rough estimate)
Density 
0.9734 (rough estimate)
refractive index 
1.6300 (estimate)
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
solubility 
1.02mg/l
form 
Shiny Flakes
pka
2.19±0.61(Predicted)
color 
Slightly yellow to light beige
Water Solubility 
Sparingly soluble in water (0.001g/L).
BRN 
187259
InChIKey
WPTCSQBWLUUYDV-UHFFFAOYSA-N
CAS DataBase Reference
119-91-5(CAS DataBase Reference)
NIST Chemistry Reference
2,2'-Biquinoline(119-91-5)
EPA Substance Registry System
2,2'-Biquinoline (119-91-5)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
3
8
TSCA 
Yes
HS Code 
29334990

MSDS

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2,2'-Biquinoline Usage And Synthesis

Chemical Properties

SLIGHTLY YELLOW TO LIGHT BEIGE SHINY FLAKES

Uses

2,2'-Biquinoline is used as a reagent for spectrophotometric determination of Cu and as an indicator for titration of organolithium reagents, giving yellow-green charge-transfer complexes.

Application

2,2'-Biquinoline, also known as cuprous reagent, reacts with monovalent cupric ion to give a purple color. It is a highly selective reagent for the determination of cuprous. It can be utilized as a ligand in the synthesis of heteroleptic Cu(I) complexes for light-emitting diodes(LED) and cationic iridium(III) complexes as phosphorescent dyes for live-cell imaging.

Synthesis Reference(s)

Tetrahedron Letters, 15, p. 2373, 1974 DOI: 10.1016/S0040-4039(01)92259-2

General Description

2,2′-Biquinoline is a white crystalline solid and it melts at 176°C. It is insoluble in water, but is soluble in ethyl, amyl and isoamyl alcohol, isoamyl acetate, dimethylformamide, acetic acid, acetonitrile and carbon tetrachloride.

Purification Methods

Decolourise 2,2'-biquinolyl in CHCl3 solution (charcoal), then crystallise it to constant melting point from EtOH or pet ether [Cumper et al. J Chem Soc 1188 1962]. [Beilstein 23/10 V 8.]

2,2'-BiquinolineSupplier

Shanghai Uchem Inc. Gold
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