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o-Phenanthroline

CAS 66-71-7 ≥98%

o-Phenanthroline | CAS 66-71-7 | ≥98%

Pack sizes & prices

Pack sizes and prices, excluding and including VAT
Pack size Excl. VAT Incl. VAT Add to cart
5.0 g €39,20
10 g €57,20
25 g €79,20

Taxes and fees, e.g. VAT, included in the price. Shipping calculated at checkout.Free shipping on EU, UK and EFTA orders above €250, and above €400 to the rest of the world.

Technical Specifications

CAS Number 66-71-7
EC / EINECS Number 200-629-2
MDL Number MFCD00011678
SMILES C1=CC2=C(C3=C(C=CC=N3)C=C2)N=C1
InChI InChI=1S/C12H8N2/c1-3-9-5-6-10-4-2-8-14-12(10)11(9)13-7-1/h1-8H
InChIKey DGEZNRSVGBDHLK-UHFFFAOYSA-N
PubChem CID 1318
Molecular Formula C₁₂H₈N₂
Molecular Weight 180.2 g/mol
Melting Point 97–102 °C
Solubility Slightly soluble in water, soluble in common organic solvents
Purity ≥98%
Physical Form White to off-white crystalline solid
HS Code 2933.99
Shelf Life Retest period: 36 months from date of manufacture
Storage Conditions Store in a dry, well-ventilated place in a tightly sealed container

Product Description & Scientific Applications

1,10-Phenanthroline, also sold as o-phenanthroline, is a rigid, planar bidentate N-donor ligand whose optimally oriented nitrogen atoms coordinate strongly to most metals, especially transition metals, lanthanides and actinides.

Its extended conjugation over three fused rings makes it an electron-deficient, strong-acceptor ligand that stabilises soft metal cations. Unlike bipyridine, its extra fused ring blocks ligand rotation, giving more rigid catalyst complexes.

Applications and Reactions

  • Copper-catalysed Ullmann amination: it enables amination of aryl halides with amines at 110 °C and 10 mol% copper, below the classical stoichiometric-copper method.
  • Copper C–S coupling: with Cu₂O it supports coupling of aryl halides with thiols in 75–99% yield.
  • CuAAC click chemistry: added to copper(I) catalysts it accelerates azide–alkyne cycloaddition, enabling efficient catalysis in hydroalcoholic solvents.
  • Nickel coupling in water: Ni(phen)₂Br₂ at 2 mol%, with zinc nanopowder and K₃PO₄, couples decanethiol to 4-methoxyiodobenzene in aqueous surfactant solution. Manganese, ascorbic acid and PMHS all fail as the reductant.
  • Palladium aerobic oxidation: with palladium(II) it gives water-tolerant, recyclable catalysts for aerobic oxidation of alcohols to aldehydes, ketones and carboxylic acids.
  • Redox indicator: with Fe²⁺ it forms ferroin, the most widely used redox indicator in chemistry, absorbing at 510 nm with a molar absorptivity of 11,100 mol⁻¹ dm³ cm⁻¹.
  • Ligand specificity: 2,9-dimethyl substitution (neocuproine) impairs the same nickel coupling, and DPPF, DPPE and DPPB give significantly lower yields.

Shipping Destinations

  • EU & UK: Priority delivery, 3–5 business days.
  • Switzerland (DDP): 3–7 business days, duties and taxes prepaid.

Safety Information

GHS Pictograms
GHS06 Toxic GHS09 Environment
Signal Word Danger
Hazard Class UN 2811 — Toxic solid, organic, n.o.s. (1,10-phenanthroline) (Class 6.1, PG III)
Transport Category Class 6.1, PG III (ADR/IATA/IMDG)
H-Statements H301 - H400
P-Statements P264 - P270 - P273 - P301+P310 - P391 - P501

Documentation

Safety Data Sheet Download PDF
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